title stringlengths 10 172 | question_id int64 469 40.1M | question_body stringlengths 22 48.2k | question_score int64 -44 5.52k | question_date stringlengths 20 20 | answer_id int64 497 40.1M | answer_body stringlengths 18 33.9k | answer_score int64 -38 8.38k | answer_date stringlengths 20 20 | tags list |
|---|---|---|---|---|---|---|---|---|---|
How to convert rational and decimal number strings to floats in python? | 575,925 | <p>How can I convert strings which can denote decimal or rational numbers to floats</p>
<pre><code>>>> ["0.1234", "1/2"]
['0.1234', '1/2']
</code></pre>
<p>I'd want [0.1234, 0.5].</p>
<p>eval is what I was thinking but no luck:</p>
<pre><code>>>> eval("1/2")
0
</code></pre>
| 9 | 2009-02-22T22:08:47Z | 575,937 | <p>Use <code>from __future__ import division</code> to get the behavior you want. Then, in a pinch, you can do something like </p>
<pre><code>from __future__ import division
strings = ["0.1234", "1/2", "2/3"]
numbers = map(eval, strings)
</code></pre>
<p>to get a list of floats out of your strings. If you want to do ... | 4 | 2009-02-22T22:16:05Z | [
"python",
"rational-numbers"
] |
How to convert rational and decimal number strings to floats in python? | 575,925 | <p>How can I convert strings which can denote decimal or rational numbers to floats</p>
<pre><code>>>> ["0.1234", "1/2"]
['0.1234', '1/2']
</code></pre>
<p>I'd want [0.1234, 0.5].</p>
<p>eval is what I was thinking but no luck:</p>
<pre><code>>>> eval("1/2")
0
</code></pre>
| 9 | 2009-02-22T22:08:47Z | 575,939 | <p>The problem with eval is that, as in python, the quotient of integers is an integer. So, you have several choices.</p>
<p>The first is simply to make integer division return floats:</p>
<pre><code>from __future__ import division
</code></pre>
<p>The other is to split the rational number:</p>
<pre><code>reduce(la... | 2 | 2009-02-22T22:17:37Z | [
"python",
"rational-numbers"
] |
How to convert rational and decimal number strings to floats in python? | 575,925 | <p>How can I convert strings which can denote decimal or rational numbers to floats</p>
<pre><code>>>> ["0.1234", "1/2"]
['0.1234', '1/2']
</code></pre>
<p>I'd want [0.1234, 0.5].</p>
<p>eval is what I was thinking but no luck:</p>
<pre><code>>>> eval("1/2")
0
</code></pre>
| 9 | 2009-02-22T22:08:47Z | 575,944 | <p>I'd parse the string if conversion fails:</p>
<pre><code>>>> def convert(s):
try:
return float(s)
except ValueError:
num, denom = s.split('/')
return float(num) / float(denom)
...
>>> convert("0.1234")
0.1234
>>> convert("1/2")
0.5
</code></pre>
<p>Gener... | 16 | 2009-02-22T22:18:47Z | [
"python",
"rational-numbers"
] |
How to convert rational and decimal number strings to floats in python? | 575,925 | <p>How can I convert strings which can denote decimal or rational numbers to floats</p>
<pre><code>>>> ["0.1234", "1/2"]
['0.1234', '1/2']
</code></pre>
<p>I'd want [0.1234, 0.5].</p>
<p>eval is what I was thinking but no luck:</p>
<pre><code>>>> eval("1/2")
0
</code></pre>
| 9 | 2009-02-22T22:08:47Z | 575,967 | <p>The suggestions with <code>from __future__ import division</code> combined with <code>eval</code> will certainly work.</p>
<p>It's probably worth pointing out that the suggestions that don't use <code>eval</code> but rather parse the string do so because <code>eval</code> is dangerous: if there is some way for an a... | 0 | 2009-02-22T22:29:11Z | [
"python",
"rational-numbers"
] |
How to convert rational and decimal number strings to floats in python? | 575,925 | <p>How can I convert strings which can denote decimal or rational numbers to floats</p>
<pre><code>>>> ["0.1234", "1/2"]
['0.1234', '1/2']
</code></pre>
<p>I'd want [0.1234, 0.5].</p>
<p>eval is what I was thinking but no luck:</p>
<pre><code>>>> eval("1/2")
0
</code></pre>
| 9 | 2009-02-22T22:08:47Z | 575,976 | <p>As others have pointed out, using <code>eval</code> is potentially a security risk, and certainly a bad habit to get into.
(if you don't think it's as risky as <code>exec</code>, imagine <code>eval</code>ing something like: <code>__import__('os').system('rm -rf /')</code>)</p>
<p>However, if you have python 2.6 or ... | 7 | 2009-02-22T22:34:55Z | [
"python",
"rational-numbers"
] |
How to convert rational and decimal number strings to floats in python? | 575,925 | <p>How can I convert strings which can denote decimal or rational numbers to floats</p>
<pre><code>>>> ["0.1234", "1/2"]
['0.1234', '1/2']
</code></pre>
<p>I'd want [0.1234, 0.5].</p>
<p>eval is what I was thinking but no luck:</p>
<pre><code>>>> eval("1/2")
0
</code></pre>
| 9 | 2009-02-22T22:08:47Z | 576,025 | <p>Another option (also only for 2.6 and up) is the <code>fractions</code> module.</p>
<pre><code>>>> from fractions import Fraction
>>> Fraction("0.1234")
Fraction(617, 5000)
>>> Fraction("1/2")
Fraction(1, 2)
>>> float(Fraction("0.1234"))
0.1234
>>> float(Fraction("1/2"))... | 6 | 2009-02-22T23:04:44Z | [
"python",
"rational-numbers"
] |
How to convert rational and decimal number strings to floats in python? | 575,925 | <p>How can I convert strings which can denote decimal or rational numbers to floats</p>
<pre><code>>>> ["0.1234", "1/2"]
['0.1234', '1/2']
</code></pre>
<p>I'd want [0.1234, 0.5].</p>
<p>eval is what I was thinking but no luck:</p>
<pre><code>>>> eval("1/2")
0
</code></pre>
| 9 | 2009-02-22T22:08:47Z | 576,156 | <p>In Python 3, this should work.</p>
<pre><code>>>> x = ["0.1234", "1/2"]
>>> [eval(i) for i in x]
[0.1234, 0.5]
</code></pre>
| 1 | 2009-02-23T00:18:53Z | [
"python",
"rational-numbers"
] |
How to convert rational and decimal number strings to floats in python? | 575,925 | <p>How can I convert strings which can denote decimal or rational numbers to floats</p>
<pre><code>>>> ["0.1234", "1/2"]
['0.1234', '1/2']
</code></pre>
<p>I'd want [0.1234, 0.5].</p>
<p>eval is what I was thinking but no luck:</p>
<pre><code>>>> eval("1/2")
0
</code></pre>
| 9 | 2009-02-22T22:08:47Z | 576,395 | <p><a href="http://code.google.com/p/sympy/" rel="nofollow">sympy</a> can help you out here:</p>
<pre><code>import sympy
half = sympy.Rational('1/2')
p1234 = sympy.Rational('0.1234')
print '%f, %f" % (half, p1234)
</code></pre>
| 1 | 2009-02-23T02:54:20Z | [
"python",
"rational-numbers"
] |
Is there a special trick to downloading a zip file and writing it to disk with Python? | 576,238 | <p>I am FTPing a zip file from a remote FTP site using Python's ftplib. I then attempt to write it to disk. The file write works, however most attempts to open the zip using WinZip or WinRar fail; both apps claim the file is corrupted. Oddly however, when right clicking and attempting to extract the file using WinRar, ... | 1 | 2009-02-23T01:00:37Z | 576,254 | <p>I've never used that library, but urllib2 works fine, and is more straightforward. Curl is even better.</p>
<p>Looking at your code, I can see a couple of things wrong. Your exception catching only prints the exception, then continues. For fatal errors like not getting an FTP connection, they need to print the m... | 1 | 2009-02-23T01:12:00Z | [
"python",
"ftp",
"ftplib"
] |
Is there a special trick to downloading a zip file and writing it to disk with Python? | 576,238 | <p>I am FTPing a zip file from a remote FTP site using Python's ftplib. I then attempt to write it to disk. The file write works, however most attempts to open the zip using WinZip or WinRar fail; both apps claim the file is corrupted. Oddly however, when right clicking and attempting to extract the file using WinRar, ... | 1 | 2009-02-23T01:00:37Z | 576,258 | <p>Pass file.write directly inside the retrbinary function instead of passing appender. This will work and it will also not use that much RAM when you are downloading a big file. </p>
<p>If you'd like the data stored inside a variable though, you can also have a variable named: </p>
<pre><code>blocks = []
</code></p... | 2 | 2009-02-23T01:13:59Z | [
"python",
"ftp",
"ftplib"
] |
Django Project structure, recommended structure to share an extended auth "User" model across apps? | 576,345 | <p>I'm wondering what the common project/application structure is when the user model extended/sub-classed and this Resulting User model is shared and used across multiple apps. </p>
<p>I'd like to reference the same user model in multiple apps.
I haven't built the login interface yet, so I'm not sure how it should f... | 1 | 2009-02-23T02:17:32Z | 576,353 | <p>You should check first if the contrib.auth module satisfies your needs, so you don't have to reinvent the wheel:</p>
<p><a href="http://docs.djangoproject.com/en/dev/topics/auth/#topics-auth" rel="nofollow">http://docs.djangoproject.com/en/dev/topics/auth/#topics-auth</a></p>
<p>edit:</p>
<p>Check this snippet th... | 3 | 2009-02-23T02:22:59Z | [
"python",
"django",
"django-models",
"django-project-architect"
] |
Django Project structure, recommended structure to share an extended auth "User" model across apps? | 576,345 | <p>I'm wondering what the common project/application structure is when the user model extended/sub-classed and this Resulting User model is shared and used across multiple apps. </p>
<p>I'd like to reference the same user model in multiple apps.
I haven't built the login interface yet, so I'm not sure how it should f... | 1 | 2009-02-23T02:17:32Z | 576,359 | <p>i think the 'project/app' names are badly chosen. it's more like 'site/module'. an app can be very useful without having views, for example.</p>
<p>check the <a href="http://www.youtube.com/view_play_list?p=D415FAF806EC47A1" rel="nofollow">2008 DjangoCon talks</a> on YouTube, especially the one about <a href="htt... | 2 | 2009-02-23T02:25:52Z | [
"python",
"django",
"django-models",
"django-project-architect"
] |
Django Project structure, recommended structure to share an extended auth "User" model across apps? | 576,345 | <p>I'm wondering what the common project/application structure is when the user model extended/sub-classed and this Resulting User model is shared and used across multiple apps. </p>
<p>I'd like to reference the same user model in multiple apps.
I haven't built the login interface yet, so I'm not sure how it should f... | 1 | 2009-02-23T02:17:32Z | 576,362 | <p>Why are you extending User? Please clarify.</p>
<p>If you're adding more information about the users, you don't need to roll your own user and auth system. Django's version of that is quite solid. The user management is located in django.contrib.auth.</p>
<p>If you need to customize the information stored with u... | 6 | 2009-02-23T02:27:09Z | [
"python",
"django",
"django-models",
"django-project-architect"
] |
Is it required to learn Python 2.6 along with Python 3.0? | 576,557 | <p>If I learn python 3.0 and code in it, will my code be still compatible with Python 2.6 (or 2.5 too!)?</p>
<p><hr></p>
<p>Remarkably similar to:</p>
<p><a href="http://stackoverflow.com/questions/410609/if-im-going-to-learn-python-should-i-learn-2-x-or-just-jump-into-3-0/410626">If I'm Going to Learn Python, Shoul... | 0 | 2009-02-23T04:43:32Z | 576,565 | <p>No, 3.x is largely incompatible with 2.x (that was actually a major motivation for doing it). In fact, you probably shouldn't be using 3.0 at all-- it's rather unusable at the moment, and is still mostly intended for library developers to port to it so that it can be usable.</p>
| 5 | 2009-02-23T04:46:55Z | [
"python"
] |
Is it required to learn Python 2.6 along with Python 3.0? | 576,557 | <p>If I learn python 3.0 and code in it, will my code be still compatible with Python 2.6 (or 2.5 too!)?</p>
<p><hr></p>
<p>Remarkably similar to:</p>
<p><a href="http://stackoverflow.com/questions/410609/if-im-going-to-learn-python-should-i-learn-2-x-or-just-jump-into-3-0/410626">If I'm Going to Learn Python, Shoul... | 0 | 2009-02-23T04:43:32Z | 576,567 | <p>NO. Python 3 code is backwards incompatible with 2.6. I recommend to begin with 2.6, because your code will be more <strong>useful</strong>.</p>
| 1 | 2009-02-23T04:47:38Z | [
"python"
] |
Is it required to learn Python 2.6 along with Python 3.0? | 576,557 | <p>If I learn python 3.0 and code in it, will my code be still compatible with Python 2.6 (or 2.5 too!)?</p>
<p><hr></p>
<p>Remarkably similar to:</p>
<p><a href="http://stackoverflow.com/questions/410609/if-im-going-to-learn-python-should-i-learn-2-x-or-just-jump-into-3-0/410626">If I'm Going to Learn Python, Shoul... | 0 | 2009-02-23T04:43:32Z | 576,583 | <p>Python 2.6 and Python 3.0 are <em>very</em> compatible with each other. There honestly aren't very many differences between the two. At this point, third-party library support is far better for the 2.x series (last I checked, a few libraries I use hadn't been updated from 2.5, but going from 2.5 to 2.6 is just a rec... | 4 | 2009-02-23T05:01:46Z | [
"python"
] |
Is it required to learn Python 2.6 along with Python 3.0? | 576,557 | <p>If I learn python 3.0 and code in it, will my code be still compatible with Python 2.6 (or 2.5 too!)?</p>
<p><hr></p>
<p>Remarkably similar to:</p>
<p><a href="http://stackoverflow.com/questions/410609/if-im-going-to-learn-python-should-i-learn-2-x-or-just-jump-into-3-0/410626">If I'm Going to Learn Python, Shoul... | 0 | 2009-02-23T04:43:32Z | 576,666 | <p>It would be easier to use 2.6 right now because most external libraries are not compatible with 3 yet. </p>
| 2 | 2009-02-23T06:14:30Z | [
"python"
] |
PyGame not receiving events when 3+ keys are pressed at the same time | 576,634 | <p><em>I am developing a simple game in <a href="http://www.pygame.org/" rel="nofollow">PyGame</a>... A rocket ship flying around and shooting stuff.</em> </p>
<hr>
<p><strong>Question:</strong> Why does pygame stop emitting keyboard events when too may keys are pressed at once?</p>
<p><strong>About the Key Handli... | 3 | 2009-02-23T05:55:34Z | 576,643 | <p>This sounds like a input problem, not a code problem - are you sure the problem isn't the keyboard itself? Most keyboards have limitations on the number of keys that can be pressed at the same time. Often times you can't press more than a few keys that are close together at a time.</p>
<p>To test it out, just sta... | 10 | 2009-02-23T06:02:08Z | [
"python",
"pygame",
"keyboard-events"
] |
PyGame not receiving events when 3+ keys are pressed at the same time | 576,634 | <p><em>I am developing a simple game in <a href="http://www.pygame.org/" rel="nofollow">PyGame</a>... A rocket ship flying around and shooting stuff.</em> </p>
<hr>
<p><strong>Question:</strong> Why does pygame stop emitting keyboard events when too may keys are pressed at once?</p>
<p><strong>About the Key Handli... | 3 | 2009-02-23T05:55:34Z | 576,646 | <p>It may very well depend on the keyboard. My current no-name keyboard only supports two keys pressed at the same time, often a pain in games.</p>
| 1 | 2009-02-23T06:02:59Z | [
"python",
"pygame",
"keyboard-events"
] |
PyGame not receiving events when 3+ keys are pressed at the same time | 576,634 | <p><em>I am developing a simple game in <a href="http://www.pygame.org/" rel="nofollow">PyGame</a>... A rocket ship flying around and shooting stuff.</em> </p>
<hr>
<p><strong>Question:</strong> Why does pygame stop emitting keyboard events when too may keys are pressed at once?</p>
<p><strong>About the Key Handli... | 3 | 2009-02-23T05:55:34Z | 576,647 | <p>Some keyboards cannot send certain keys together. Often this limit is reached with 3 keys.</p>
| 2 | 2009-02-23T06:03:05Z | [
"python",
"pygame",
"keyboard-events"
] |
PyGame not receiving events when 3+ keys are pressed at the same time | 576,634 | <p><em>I am developing a simple game in <a href="http://www.pygame.org/" rel="nofollow">PyGame</a>... A rocket ship flying around and shooting stuff.</em> </p>
<hr>
<p><strong>Question:</strong> Why does pygame stop emitting keyboard events when too may keys are pressed at once?</p>
<p><strong>About the Key Handli... | 3 | 2009-02-23T05:55:34Z | 579,243 | <p>As others have eluded to already, certain (especially cheaper, lower-end) keyboards have a low quality <a href="http://en.wikipedia.org/wiki/Keyboard_technology#Keyboard_switch_matrix" rel="nofollow">keyboard matrix</a>. With these keyboards, certain key combinations will lead to the behavior you're experiencing. An... | 5 | 2009-02-23T20:42:15Z | [
"python",
"pygame",
"keyboard-events"
] |
Writing a TTL decorator in Python | 576,776 | <p>I'm trying to write a TTL decorator in python.
Basically I give it raise an exception if the function doesn't
answer in the selected time.</p>
<p>You can find the thead2 snippets on <a href="http://sebulba.wikispaces.com/recipe+thread2" rel="nofollow">http://sebulba.wikispaces.com/recipe+thread2</a></p>
<pre><code... | 3 | 2009-02-23T07:16:49Z | 576,801 | <p>The code provided is a bit tough to follow -- how is it going to raise an exception in the right place at the right time in the right thread?</p>
<p><strong>Consider this rough flow:</strong></p>
<p>Decorator function called with target function. Return a function which:</p>
<ol>
<li>Starts thread, calling target... | 5 | 2009-02-23T07:33:17Z | [
"python",
"decorator",
"ttl"
] |
Writing a TTL decorator in Python | 576,776 | <p>I'm trying to write a TTL decorator in python.
Basically I give it raise an exception if the function doesn't
answer in the selected time.</p>
<p>You can find the thead2 snippets on <a href="http://sebulba.wikispaces.com/recipe+thread2" rel="nofollow">http://sebulba.wikispaces.com/recipe+thread2</a></p>
<pre><code... | 3 | 2009-02-23T07:16:49Z | 5,914,987 | <p>If you want the function's execution to be terminated after the timeout has been exceeded, you might want to try code that has that capability. To use the module, all that needs to be done is for your function to be called as an argument to <code>add_timeout</code>, and the returned value can run. Once called, the o... | 0 | 2011-05-06T17:37:34Z | [
"python",
"decorator",
"ttl"
] |
Is there a known Win32 Tkinter bug with respect to displaying photos on a canvas? | 576,843 | <p>I'm noticing a pretty strange bug with tkinter, and I am wondering if it's because there's something in how the python interacts with the tcl, at least in Win32.</p>
<p>Here I have a super simple program that displays a gif image. It works perfectly.</p>
<pre><code>from Tkinter import *
canvas = Canvas(width=300... | 3 | 2009-02-23T07:55:51Z | 579,364 | <p>Do that as a quick solution, and I'll try to explain:</p>
<pre><code>def set_canvas(cv):
global photo # here!
photo=PhotoImage(file=sys.argv[1])
cv.create_image(0, 0, image=photo, anchor=NW) # embed a photo
print cv
print photo
</code></pre>
<p>A PhotoImage needs to have at least one reference... | 6 | 2009-02-23T21:08:36Z | [
"python",
"user-interface",
"winapi",
"tkinter"
] |
How can I reference columns by their names in python calling SQLite? | 576,933 | <p>I have some code which I've been using to query MySQL, and I'm hoping to use it with SQLite. My real hope is that this will not involve making too many changes to the code. Unfortunately, the following code doesn't work with SQLite:</p>
<pre><code>cursor.execute(query)
rows = cursor.fetchall()
data = []
for row i... | 10 | 2009-02-23T08:50:12Z | 576,954 | <p>I'm not sure if this is the best approach, but here's what I typically do to retrieve a record set using a DB-API 2 compliant module:</p>
<pre><code>cursor.execute("""SELECT foo, bar, baz, quux FROM table WHERE id = %s;""",
(interesting_record_id,))
for foo, bar, baz, quux in cursor.fetchall():
... | 9 | 2009-02-23T09:01:05Z | [
"python",
"sqlite"
] |
How can I reference columns by their names in python calling SQLite? | 576,933 | <p>I have some code which I've been using to query MySQL, and I'm hoping to use it with SQLite. My real hope is that this will not involve making too many changes to the code. Unfortunately, the following code doesn't work with SQLite:</p>
<pre><code>cursor.execute(query)
rows = cursor.fetchall()
data = []
for row i... | 10 | 2009-02-23T08:50:12Z | 577,004 | <p>To access columns by name, use the <a href="http://oss.itsystementwicklung.de/download/pysqlite/doc/sqlite3.html#sqlite3.Connection.row_factory"><code>row_factory</code></a> attribute of the Connection instance. It lets you set a function that takes the arguments <code>cursor</code> and <code>row</code>, and return... | 13 | 2009-02-23T09:25:44Z | [
"python",
"sqlite"
] |
How can I reference columns by their names in python calling SQLite? | 576,933 | <p>I have some code which I've been using to query MySQL, and I'm hoping to use it with SQLite. My real hope is that this will not involve making too many changes to the code. Unfortunately, the following code doesn't work with SQLite:</p>
<pre><code>cursor.execute(query)
rows = cursor.fetchall()
data = []
for row i... | 10 | 2009-02-23T08:50:12Z | 577,916 | <p>The SQLite API supports cursor.description so you can easily do it like this</p>
<pre><code>headers = {}
for record in cursor.fetchall():
if not headers:
headers = dict((desc[0], idx) for idx,desc in cursor.description))
data.append(record[headers['column_name']])
</code></pre>
<p>A little long win... | 1 | 2009-02-23T15:06:27Z | [
"python",
"sqlite"
] |
How can I reference columns by their names in python calling SQLite? | 576,933 | <p>I have some code which I've been using to query MySQL, and I'm hoping to use it with SQLite. My real hope is that this will not involve making too many changes to the code. Unfortunately, the following code doesn't work with SQLite:</p>
<pre><code>cursor.execute(query)
rows = cursor.fetchall()
data = []
for row i... | 10 | 2009-02-23T08:50:12Z | 7,099,412 | <p>This can be done by adding a single line after the "connect" statment:</p>
<pre><code>conn.row_factory = sqlite3.Row
</code></pre>
<p>Check the documentation here:
<a href="http://docs.python.org/library/sqlite3.html#accessing-columns-by-name-instead-of-by-index">http://docs.python.org/library/sqlite3.html#accessi... | 8 | 2011-08-17T21:00:19Z | [
"python",
"sqlite"
] |
How can I reference columns by their names in python calling SQLite? | 576,933 | <p>I have some code which I've been using to query MySQL, and I'm hoping to use it with SQLite. My real hope is that this will not involve making too many changes to the code. Unfortunately, the following code doesn't work with SQLite:</p>
<pre><code>cursor.execute(query)
rows = cursor.fetchall()
data = []
for row i... | 10 | 2009-02-23T08:50:12Z | 11,664,048 | <p>kushal's answer to <a href="http://www.gossamer-threads.com/lists/python/python/755969" rel="nofollow">this forum</a> works fine:</p>
<blockquote>
<p>Use a DictCursor:</p>
</blockquote>
<pre><code>import MySQLdb.cursors
.
.
.
cursor = db.cursor (MySQLdb.cursors.DictCursor)
cursor.execute (query)
rows = cursor.f... | 1 | 2012-07-26T06:59:46Z | [
"python",
"sqlite"
] |
How can I reference columns by their names in python calling SQLite? | 576,933 | <p>I have some code which I've been using to query MySQL, and I'm hoping to use it with SQLite. My real hope is that this will not involve making too many changes to the code. Unfortunately, the following code doesn't work with SQLite:</p>
<pre><code>cursor.execute(query)
rows = cursor.fetchall()
data = []
for row i... | 10 | 2009-02-23T08:50:12Z | 20,042,292 | <p>In the five years since the question was asked and then answered, a very simple solution has arisen. Any new code can simply wrap the connection object with a row factory. Code example:</p>
<pre><code>import sqlite3
conn = sqlite3.connect('./someFile')
conn.row_factory = sqlite3.Row // Here's the magic!
cu... | 8 | 2013-11-18T07:27:11Z | [
"python",
"sqlite"
] |
How do I design sms service? | 576,940 | <p>I want to design a website that can send and receive sms.</p>
<ol>
<li>How should I approach the problem ?</li>
<li>What are the resources available ?</li>
<li>I know php,python what else do I need or are the better options available?</li>
<li>How can experiment using my pc only?[somthing like localhost]</li>
<li>W... | 1 | 2009-02-23T08:53:45Z | 576,947 | <p>You need a SMS server. <a href="http://www.ozeki.hu/" rel="nofollow">This</a> should get you started.</p>
| 0 | 2009-02-23T08:55:54Z | [
"php",
"python",
"sms",
"mobile-phones",
"bulksms"
] |
How do I design sms service? | 576,940 | <p>I want to design a website that can send and receive sms.</p>
<ol>
<li>How should I approach the problem ?</li>
<li>What are the resources available ?</li>
<li>I know php,python what else do I need or are the better options available?</li>
<li>How can experiment using my pc only?[somthing like localhost]</li>
<li>W... | 1 | 2009-02-23T08:53:45Z | 576,959 | <p>You can take a look at <a href="http://www.kannel.org" rel="nofollow">Kannel</a>. It's so simple to create SMS services using it. Just define a keyword, then put in the URL to which the incoming SMS request will be routed (you'll get the info such as mobile number and SMS text in query string parameters), then whate... | 3 | 2009-02-23T09:04:35Z | [
"php",
"python",
"sms",
"mobile-phones",
"bulksms"
] |
How do I design sms service? | 576,940 | <p>I want to design a website that can send and receive sms.</p>
<ol>
<li>How should I approach the problem ?</li>
<li>What are the resources available ?</li>
<li>I know php,python what else do I need or are the better options available?</li>
<li>How can experiment using my pc only?[somthing like localhost]</li>
<li>W... | 1 | 2009-02-23T08:53:45Z | 577,001 | <p>First thing, You need to sign up for an account (SMS gateway), most of them also give you example code how to send and receive sms using their API. Then you will wrap the the sms functionality around your sites logic. </p>
<p>e.g <a href="http://www.clickatell.com/developers/php.php" rel="nofollow">http://www.clic... | 2 | 2009-02-23T09:25:06Z | [
"php",
"python",
"sms",
"mobile-phones",
"bulksms"
] |
How do I design sms service? | 576,940 | <p>I want to design a website that can send and receive sms.</p>
<ol>
<li>How should I approach the problem ?</li>
<li>What are the resources available ?</li>
<li>I know php,python what else do I need or are the better options available?</li>
<li>How can experiment using my pc only?[somthing like localhost]</li>
<li>W... | 1 | 2009-02-23T08:53:45Z | 577,345 | <p>Since my company does this sometimes (text promotions etc, though our main focus is much much lower level stuff), I figured I should pitch in.</p>
<p>By far the simplest way is to use a service such as <a href="http://www.clickatell.com" rel="nofollow">Clickatell</a>, which provides a HTTP API, as well as FTP and <... | 0 | 2009-02-23T11:32:17Z | [
"php",
"python",
"sms",
"mobile-phones",
"bulksms"
] |
How do I design sms service? | 576,940 | <p>I want to design a website that can send and receive sms.</p>
<ol>
<li>How should I approach the problem ?</li>
<li>What are the resources available ?</li>
<li>I know php,python what else do I need or are the better options available?</li>
<li>How can experiment using my pc only?[somthing like localhost]</li>
<li>W... | 1 | 2009-02-23T08:53:45Z | 577,357 | <p>I've copied this from an <a href="http://stackoverflow.com/questions/432944/sms-from-web-application/433020#433020">answer I gave</a> in relation to <a href="http://stackoverflow.com/questions/432944/sms-from-web-application/">this question</a>. However, in addition to the text below, take a look at <a href="http:/... | 2 | 2009-02-23T11:38:17Z | [
"php",
"python",
"sms",
"mobile-phones",
"bulksms"
] |
How can I change a huge file into csv in python | 576,967 | <p>I'm a beginner in python. I have a huge text file (hundreds of GB) and I want to convert the file into csv file. In my text file, I know the row delimiter is a string "<><><><><><><>". If a line contains that string, I want to replace it with ". Is there a way to do it without having to read the... | 2 | 2009-02-23T09:10:01Z | 576,976 | <p>It's only wasteful if you don't have disk to spare. That is, fix it when it's a problem. Your solution looks ok as a first attempt.</p>
<p>It's not wasteful of memory because a file handler is a stream.</p>
| 1 | 2009-02-23T09:15:35Z | [
"python",
"file",
"csv"
] |
How can I change a huge file into csv in python | 576,967 | <p>I'm a beginner in python. I have a huge text file (hundreds of GB) and I want to convert the file into csv file. In my text file, I know the row delimiter is a string "<><><><><><><>". If a line contains that string, I want to replace it with ". Is there a way to do it without having to read the... | 2 | 2009-02-23T09:10:01Z | 576,984 | <p>Yes, open() treats the file as a stream, as does readline(). It'll only read the next line. If you call read(), however, it'll read everything into memory.</p>
<p>Your example code looks ok at first glance. Almost every solution will require you to copy the file elsewhere. Its not exactly easy to modify the con... | 4 | 2009-02-23T09:18:55Z | [
"python",
"file",
"csv"
] |
How can I change a huge file into csv in python | 576,967 | <p>I'm a beginner in python. I have a huge text file (hundreds of GB) and I want to convert the file into csv file. In my text file, I know the row delimiter is a string "<><><><><><><>". If a line contains that string, I want to replace it with ". Is there a way to do it without having to read the... | 2 | 2009-02-23T09:10:01Z | 576,995 | <p>Reading lines is simply done using a <a href="http://docs.python.org/library/stdtypes.html#file.next" rel="nofollow">file iterator</a>:</p>
<pre><code>for line in fin:
if line.contains("<><><><><><><>"):
fout.writeline("\"")
</code></pre>
<p>Also consider... | 1 | 2009-02-23T09:23:05Z | [
"python",
"file",
"csv"
] |
How can I change a huge file into csv in python | 576,967 | <p>I'm a beginner in python. I have a huge text file (hundreds of GB) and I want to convert the file into csv file. In my text file, I know the row delimiter is a string "<><><><><><><>". If a line contains that string, I want to replace it with ". Is there a way to do it without having to read the... | 2 | 2009-02-23T09:10:01Z | 577,047 | <p>[For the problem exactly as stated] There's no way that this can be done without copying the data, in python or any other language. If your processing always replaced substrings with new substrings of <em>equal length</em>, maybe you could do it in-place. But whenever you replace <code><><><><><><... | 0 | 2009-02-23T09:44:55Z | [
"python",
"file",
"csv"
] |
How can I change a huge file into csv in python | 576,967 | <p>I'm a beginner in python. I have a huge text file (hundreds of GB) and I want to convert the file into csv file. In my text file, I know the row delimiter is a string "<><><><><><><>". If a line contains that string, I want to replace it with ". Is there a way to do it without having to read the... | 2 | 2009-02-23T09:10:01Z | 577,068 | <p>If you're delimiting fields with double quotes, it looks like you need to escape the double quotes you have occurring in your elements (for example <code>1231214 ""</code> will need to be <code>\n1231214 \"\"</code>).</p>
<p>Something like</p>
<pre><code>fin = open("input", "r")
fout = open("output", "w")
for line... | 0 | 2009-02-23T09:55:01Z | [
"python",
"file",
"csv"
] |
How can I change a huge file into csv in python | 576,967 | <p>I'm a beginner in python. I have a huge text file (hundreds of GB) and I want to convert the file into csv file. In my text file, I know the row delimiter is a string "<><><><><><><>". If a line contains that string, I want to replace it with ". Is there a way to do it without having to read the... | 2 | 2009-02-23T09:10:01Z | 577,158 | <p>@richard-levasseur</p>
<p>I agree, <code>sed</code> seems like the right way to go. Here's a rough cut at what the OP describes:</p>
<pre><code> sed -i -e's/<><><><><><><>/"/g' foo.txt
</code></pre>
<p>This will do the replacement in-place in the existing <code>foo.txt</c... | 5 | 2009-02-23T10:27:42Z | [
"python",
"file",
"csv"
] |
How can I change a huge file into csv in python | 576,967 | <p>I'm a beginner in python. I have a huge text file (hundreds of GB) and I want to convert the file into csv file. In my text file, I know the row delimiter is a string "<><><><><><><>". If a line contains that string, I want to replace it with ". Is there a way to do it without having to read the... | 2 | 2009-02-23T09:10:01Z | 577,867 | <p>With python you will have to create a new file for safety sake, it will cause alot less headaches than trying to write in place.</p>
<p>The below listed reads your input 1 line at a time and buffers the columns (from what I understood of your test input file was 1 row) and then once the end of row delimiter is hit ... | 1 | 2009-02-23T14:53:51Z | [
"python",
"file",
"csv"
] |
How can I change a huge file into csv in python | 576,967 | <p>I'm a beginner in python. I have a huge text file (hundreds of GB) and I want to convert the file into csv file. In my text file, I know the row delimiter is a string "<><><><><><><>". If a line contains that string, I want to replace it with ". Is there a way to do it without having to read the... | 2 | 2009-02-23T09:10:01Z | 580,169 | <p>@Constatin suggests that if you would be satisfied with replacing <pre><code>'<><><><><><><>\n'</code></pre> by <pre><code>'" \n'</code></pre>
then the replacement string is the same length, and in that case you can craft a solution to in-place editing with <code>mmap</code>. You wil... | 1 | 2009-02-24T01:59:12Z | [
"python",
"file",
"csv"
] |
How to exit a module before it has finished parsing? | 577,119 | <p>I have a module that imports a module, but in some cases the module being imported may not exist. After the module is imported there is a class inherits from a class the imported module. If I was to catch the <code>ImportError</code> exception in the case the module doesn't exist, how can I stop Python from parsing ... | 4 | 2009-02-23T10:15:09Z | 577,172 | <p>You could use:</p>
<pre><code>try:
from skynet import SkyNet
inherit_from = SkyNet
except ImportError:
inherit_from = object
class SelfAwareSkyeNet(inherit_from):
pass
</code></pre>
<p>This works only if the implementation do not differ.</p>
<p><strong>Edit:</strong> New solution after comment.</p>
| 2 | 2009-02-23T10:34:43Z | [
"python",
"import",
"module"
] |
How to exit a module before it has finished parsing? | 577,119 | <p>I have a module that imports a module, but in some cases the module being imported may not exist. After the module is imported there is a class inherits from a class the imported module. If I was to catch the <code>ImportError</code> exception in the case the module doesn't exist, how can I stop Python from parsing ... | 4 | 2009-02-23T10:15:09Z | 577,211 | <p>try: supports an else: clause</p>
<pre><code>try:
from skynet import SkyNet
except ImportError:
class SelfAwareSkyNet():
pass
else:
class SelfAwareSkyNet(SkyNet):
pass
</code></pre>
| 8 | 2009-02-23T10:51:16Z | [
"python",
"import",
"module"
] |
Python "extend" for a dictionary | 577,234 | <p>Which is the best way to extend a dictionary with another one? For instance:</p>
<pre><code>>>> a = { "a" : 1, "b" : 2 }
>>> b = { "c" : 3, "d" : 4 }
>>> a
{'a': 1, 'b': 2}
>>> b
{'c': 3, 'd': 4}
</code></pre>
<p>I'm looking for any operation to obtain this avoiding <code>for</c... | 211 | 2009-02-23T10:59:32Z | 577,241 | <pre><code>a.update(b)
</code></pre>
<p><a href="http://docs.python.org/2/library/stdtypes.html#dict.update">Python Standard Library Documentation</a></p>
| 352 | 2009-02-23T11:01:49Z | [
"python",
"dictionary"
] |
Python "extend" for a dictionary | 577,234 | <p>Which is the best way to extend a dictionary with another one? For instance:</p>
<pre><code>>>> a = { "a" : 1, "b" : 2 }
>>> b = { "c" : 3, "d" : 4 }
>>> a
{'a': 1, 'b': 2}
>>> b
{'c': 3, 'd': 4}
</code></pre>
<p>I'm looking for any operation to obtain this avoiding <code>for</c... | 211 | 2009-02-23T10:59:32Z | 577,245 | <pre><code>a.update(b)
</code></pre>
<p>Will add keys and values from <em>b</em> to <em>a</em>, overwriting if there's already a value for a key.</p>
| 18 | 2009-02-23T11:04:22Z | [
"python",
"dictionary"
] |
Python "extend" for a dictionary | 577,234 | <p>Which is the best way to extend a dictionary with another one? For instance:</p>
<pre><code>>>> a = { "a" : 1, "b" : 2 }
>>> b = { "c" : 3, "d" : 4 }
>>> a
{'a': 1, 'b': 2}
>>> b
{'c': 3, 'd': 4}
</code></pre>
<p>I'm looking for any operation to obtain this avoiding <code>for</c... | 211 | 2009-02-23T10:59:32Z | 1,552,420 | <p>A beautiful gem in <a href="http://stackoverflow.com/questions/1551666/how-can-2-python-dictionaries-become-1/1551878#1551878">this closed question</a>:</p>
<p>The "oneliner way", altering neither of the input dicts, is</p>
<pre><code>basket = dict(basket_one, **basket_two)
</code></pre>
<p>Learn what <a href="ht... | 109 | 2009-10-12T02:27:52Z | [
"python",
"dictionary"
] |
Python "extend" for a dictionary | 577,234 | <p>Which is the best way to extend a dictionary with another one? For instance:</p>
<pre><code>>>> a = { "a" : 1, "b" : 2 }
>>> b = { "c" : 3, "d" : 4 }
>>> a
{'a': 1, 'b': 2}
>>> b
{'c': 3, 'd': 4}
</code></pre>
<p>I'm looking for any operation to obtain this avoiding <code>for</c... | 211 | 2009-02-23T10:59:32Z | 12,697,215 | <p>As others have mentioned, <code>a.update(b)</code> for some dicts <code>a</code> and <code>b</code> will achieve the result you've asked for in your question. However, I want to point out that many times I have seen the <code>extend</code> method of mapping/set objects desire that in the syntax <code>a.extend(b)</co... | 12 | 2012-10-02T19:48:15Z | [
"python",
"dictionary"
] |
gtk TextView widget doesn't update during function | 577,302 | <p>I'm new to GUI programming with python and gtk, so this is a bit of a beginners question.
I have a function that is called when a button is pressed which does various tasks, and a TextView widget which I write to after each task is completed. The problem is that the TextView widget doesn't update until the entire f... | 0 | 2009-02-23T11:18:37Z | 577,461 | <p>After each update to the TextView call</p>
<pre><code>while gtk.events_pending():
gtk.main_iteration()
</code></pre>
<p>You can do your update through a custom function:</p>
<pre><code>def my_insert(self, widget, report, text):
report.insert_at_cursor(text)
while gtk.events_pending():
gtk.main_iteratio... | 4 | 2009-02-23T12:17:22Z | [
"python",
"gtk",
"pygtk"
] |
Django - how do I _not_ dispatch a signal? | 577,376 | <p>I wrote some smart generic counters and managers for my models (to avoid <code>select count</code> queries etc.). Therefore I got some heavy logic going on for post_save. </p>
<p>I would like to prevent handling the signal when there's no need to.
I guess the perfect interface would be:</p>
<pre><code>instance.s... | 4 | 2009-02-23T11:45:25Z | 577,432 | <p>A quick and dirty solution would be:</p>
<pre><code>from django.db.models.signals import post_save
from somewhere_in_my_app import my_post_save_handler
post_save.disconnect(my_post_save_handler)
instance.save()
post_save.connect(my_post_save_handler)
</code></pre>
<p>But otherwise i strongly recommend moving your... | 11 | 2009-02-23T12:05:29Z | [
"python",
"django",
"django-signals"
] |
Django - how do I _not_ dispatch a signal? | 577,376 | <p>I wrote some smart generic counters and managers for my models (to avoid <code>select count</code> queries etc.). Therefore I got some heavy logic going on for post_save. </p>
<p>I would like to prevent handling the signal when there's no need to.
I guess the perfect interface would be:</p>
<pre><code>instance.s... | 4 | 2009-02-23T11:45:25Z | 1,420,789 | <p>You can also call <code>instance.save_base(raw=True)</code> and check for the <code>raw</code> argument in your <code>pre_save</code> or <code>post_save</code> signal handler:</p>
<pre><code>def my_post_save_handler(instance, raw, **kwargs):
if not raw:
heavy_logic()
</code></pre>
<p>You can add some s... | 2 | 2009-09-14T10:39:02Z | [
"python",
"django",
"django-signals"
] |
Django - how do I _not_ dispatch a signal? | 577,376 | <p>I wrote some smart generic counters and managers for my models (to avoid <code>select count</code> queries etc.). Therefore I got some heavy logic going on for post_save. </p>
<p>I would like to prevent handling the signal when there's no need to.
I guess the perfect interface would be:</p>
<pre><code>instance.s... | 4 | 2009-02-23T11:45:25Z | 10,881,618 | <p>You can disconnect and reconnect the signal. Try using a <code>with:</code> statement with this utility class:</p>
<pre><code>class SignalBlocker(object):
def __init__(self, signal, receiver, **kwargs):
self.signal = signal
self.receiver = receiver
self.kwargs = kwargs
def __enter__... | 11 | 2012-06-04T12:49:48Z | [
"python",
"django",
"django-signals"
] |
Django - how do I _not_ dispatch a signal? | 577,376 | <p>I wrote some smart generic counters and managers for my models (to avoid <code>select count</code> queries etc.). Therefore I got some heavy logic going on for post_save. </p>
<p>I would like to prevent handling the signal when there's no need to.
I guess the perfect interface would be:</p>
<pre><code>instance.s... | 4 | 2009-02-23T11:45:25Z | 16,556,300 | <p>I found simple and easy solution:</p>
<pre><code>MyModel.objects.filter(pk=instance.id).update(**data)
</code></pre>
<p>It is due to (<a href="https://docs.djangoproject.com/en/1.5/ref/models/querysets/#update">https://docs.djangoproject.com/en/1.5/ref/models/querysets/#update</a>):</p>
<blockquote>
<p>Finally,... | 11 | 2013-05-15T03:25:55Z | [
"python",
"django",
"django-signals"
] |
Pause in Python | 577,467 | <p>I am running command-line Python scripts from the Windows taskbar by having a shortcut pointing to the Python interpreter with the actual script as a parameter.</p>
<p>After the script has been processed, the interpreter terminates and the output window is closed which makes it impossible to read script output.</p>... | 38 | 2009-02-23T12:20:26Z | 577,486 | <p>In Windows, you can use the <a href="http://docs.python.org/library/msvcrt.html#msvcrt-console" rel="nofollow"><code>msvcrt</code></a> module. </p>
<blockquote>
<p><strong>msvcrt.kbhit()</strong>
Return true if a keypress is waiting to be read.</p>
<p><strong>msvcrt.getch()</strong>
Read a keypre... | 3 | 2009-02-23T12:28:33Z | [
"python",
"command-line"
] |
Pause in Python | 577,467 | <p>I am running command-line Python scripts from the Windows taskbar by having a shortcut pointing to the Python interpreter with the actual script as a parameter.</p>
<p>After the script has been processed, the interpreter terminates and the output window is closed which makes it impossible to read script output.</p>... | 38 | 2009-02-23T12:20:26Z | 577,487 | <p>There's no need to wait for input before closing, just change your command like so:</p>
<pre><code>cmd /K python <script>
</code></pre>
<p>The <code>/K</code> switch will execute the command that follows, but leave the command interpreter window open, in contrast to <code>/C</code>, which executes and then c... | 12 | 2009-02-23T12:29:39Z | [
"python",
"command-line"
] |
Pause in Python | 577,467 | <p>I am running command-line Python scripts from the Windows taskbar by having a shortcut pointing to the Python interpreter with the actual script as a parameter.</p>
<p>After the script has been processed, the interpreter terminates and the output window is closed which makes it impossible to read script output.</p>... | 38 | 2009-02-23T12:20:26Z | 577,488 | <p>One way is to leave a <code>raw_input()</code> at the end so the script waits for you to press Enter before it terminates.</p>
| 43 | 2009-02-23T12:30:06Z | [
"python",
"command-line"
] |
Pause in Python | 577,467 | <p>I am running command-line Python scripts from the Windows taskbar by having a shortcut pointing to the Python interpreter with the actual script as a parameter.</p>
<p>After the script has been processed, the interpreter terminates and the output window is closed which makes it impossible to read script output.</p>... | 38 | 2009-02-23T12:20:26Z | 577,499 | <p>An external WConio module can help here: <a href="http://newcenturycomputers.net/projects/wconio.html" rel="nofollow">http://newcenturycomputers.net/projects/wconio.html</a></p>
<pre><code>import WConio
WConio.getch()
</code></pre>
| 0 | 2009-02-23T12:35:08Z | [
"python",
"command-line"
] |
Pause in Python | 577,467 | <p>I am running command-line Python scripts from the Windows taskbar by having a shortcut pointing to the Python interpreter with the actual script as a parameter.</p>
<p>After the script has been processed, the interpreter terminates and the output window is closed which makes it impossible to read script output.</p>... | 38 | 2009-02-23T12:20:26Z | 577,529 | <blockquote>
<p>One way is to leave a raw_input() at the end so the script waits for you to press enter before it terminates.</p>
</blockquote>
<p>The advantage of using raw_input() instead of msvcrt.* stuff is that the former is a part of standard Python (i.e. absolutely cross-platform). This also means that the sc... | 7 | 2009-02-23T12:51:41Z | [
"python",
"command-line"
] |
Pause in Python | 577,467 | <p>I am running command-line Python scripts from the Windows taskbar by having a shortcut pointing to the Python interpreter with the actual script as a parameter.</p>
<p>After the script has been processed, the interpreter terminates and the output window is closed which makes it impossible to read script output.</p>... | 38 | 2009-02-23T12:20:26Z | 578,751 | <pre><code>import pdb
pdb.debug()
</code></pre>
<p>This is used to debug the script. Should be useful to break also.</p>
| 0 | 2009-02-23T18:35:12Z | [
"python",
"command-line"
] |
Pause in Python | 577,467 | <p>I am running command-line Python scripts from the Windows taskbar by having a shortcut pointing to the Python interpreter with the actual script as a parameter.</p>
<p>After the script has been processed, the interpreter terminates and the output window is closed which makes it impossible to read script output.</p>... | 38 | 2009-02-23T12:20:26Z | 4,130,571 | <p>Try <code>os.system("pause")</code>I used it and it worked for me :)</p>
| 26 | 2010-11-09T04:41:40Z | [
"python",
"command-line"
] |
Pause in Python | 577,467 | <p>I am running command-line Python scripts from the Windows taskbar by having a shortcut pointing to the Python interpreter with the actual script as a parameter.</p>
<p>After the script has been processed, the interpreter terminates and the output window is closed which makes it impossible to read script output.</p>... | 38 | 2009-02-23T12:20:26Z | 4,130,603 | <p>Getting python to read a single character from the terminal in an unbuffered manner is a little bit tricky, but here's a recipe that'll do it: </p>
<p><a href="http://code.activestate.com/recipes/134892-getch-like-unbuffered-character-reading-from-stdin/" rel="nofollow">Recipe 134892: getch()-like unbuffered charac... | 0 | 2010-11-09T04:49:09Z | [
"python",
"command-line"
] |
Pause in Python | 577,467 | <p>I am running command-line Python scripts from the Windows taskbar by having a shortcut pointing to the Python interpreter with the actual script as a parameter.</p>
<p>After the script has been processed, the interpreter terminates and the output window is closed which makes it impossible to read script output.</p>... | 38 | 2009-02-23T12:20:26Z | 15,254,312 | <p>The best option: <code>os.system('pause')</code> <-- this will actually display a message saying 'press any key to continue' whereas adding just <code>raw_input('')</code> will print no message, just the cursor will be available. </p>
<p>not related to answer:</p>
<p><code>os.system("some cmd command")</code> i... | 6 | 2013-03-06T17:44:46Z | [
"python",
"command-line"
] |
Pause in Python | 577,467 | <p>I am running command-line Python scripts from the Windows taskbar by having a shortcut pointing to the Python interpreter with the actual script as a parameter.</p>
<p>After the script has been processed, the interpreter terminates and the output window is closed which makes it impossible to read script output.</p>... | 38 | 2009-02-23T12:20:26Z | 22,947,778 | <p>If you type </p>
<pre><code>input("")
</code></pre>
<p>It will wait for them to press any button then it will continue. Also you can put text between the quotes.</p>
| -1 | 2014-04-08T20:44:16Z | [
"python",
"command-line"
] |
Rotating a glViewport? | 577,639 | <p>In a "multitouch" environement, any application showed on a surface can be rotated/scaled to the direction of an user. Actual solution is to drawing the application on a FBO, and draw a rotated/scaled rectangle with the texture on it. I don't think it's good for performance, and all graphics cards don't provide FBO.... | 2 | 2009-02-23T13:33:48Z | 577,672 | <p>If you already have the code set up to render your scene, try adding a <code>glRotate()</code> call to the viewmodel matrix setup, to "rotate the camera" before rendering the scene.</p>
| 2 | 2009-02-23T13:42:21Z | [
"python",
"math",
"opengl"
] |
Rotating a glViewport? | 577,639 | <p>In a "multitouch" environement, any application showed on a surface can be rotated/scaled to the direction of an user. Actual solution is to drawing the application on a FBO, and draw a rotated/scaled rectangle with the texture on it. I don't think it's good for performance, and all graphics cards don't provide FBO.... | 2 | 2009-02-23T13:33:48Z | 593,825 | <p>There's no way to have a rotated viewport in OpenGL, you have to handle it manually. I see the following possible solutions :</p>
<ul>
<li><p>Keep on using textures, perhaps using glCopyTexSubImage instead of FBOs, as this is basic OpenGL feature. If your target platforms are hardware accelerated, performance shoul... | 2 | 2009-02-27T07:20:43Z | [
"python",
"math",
"opengl"
] |
How do I prevent Python's os.walk from walking across mount points? | 577,761 | <p>In Unix all disks are exposed as paths in the main filesystem, so <code>os.walk('/')</code> would traverse, for example, <code>/media/cdrom</code> as well as the primary hard disk, and that is undesirable for some applications.</p>
<p>How do I get an <code>os.walk</code> that stays on a single device?</p>
<p>Relat... | 7 | 2009-02-23T14:16:59Z | 577,807 | <p><code>os.walk()</code> can't tell (as far as I know) that it is browsing a different drive. You will need to check that yourself.</p>
<p>Try using <code>os.stat()</code>, or checking that the root variable from <code>os.walk()</code> is not <code>/media</code></p>
| 1 | 2009-02-23T14:31:05Z | [
"python",
"linux",
"unix"
] |
How do I prevent Python's os.walk from walking across mount points? | 577,761 | <p>In Unix all disks are exposed as paths in the main filesystem, so <code>os.walk('/')</code> would traverse, for example, <code>/media/cdrom</code> as well as the primary hard disk, and that is undesirable for some applications.</p>
<p>How do I get an <code>os.walk</code> that stays on a single device?</p>
<p>Relat... | 7 | 2009-02-23T14:16:59Z | 577,830 | <p>From <code>os.walk</code> docs:</p>
<blockquote>
<p>When topdown is true, the caller can
modify the dirnames list in-place
(perhaps using del or slice
assignment), and walk() will only
recurse into the subdirectories whose
names remain in dirnames; this can be
used to prune the search</p>
</blockquote... | 15 | 2009-02-23T14:39:56Z | [
"python",
"linux",
"unix"
] |
How do I prevent Python's os.walk from walking across mount points? | 577,761 | <p>In Unix all disks are exposed as paths in the main filesystem, so <code>os.walk('/')</code> would traverse, for example, <code>/media/cdrom</code> as well as the primary hard disk, and that is undesirable for some applications.</p>
<p>How do I get an <code>os.walk</code> that stays on a single device?</p>
<p>Relat... | 7 | 2009-02-23T14:16:59Z | 577,835 | <p>I think <a href="http://docs.python.org/library/os.path.html#os.path.ismount" rel="nofollow">os.path.ismount</a> might work for you. You code might look something like this:</p>
<pre><code>import os
import os.path
for root, dirs, files in os.walk('/'):
# Handle files.
dirs[:] = filter(lambda dir: not os.pa... | 3 | 2009-02-23T14:40:49Z | [
"python",
"linux",
"unix"
] |
Python Socket help (Syntax error) | 577,779 | <pre><code>import socket
HOST = "swemach.se"
PORT = 21
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((HOST, PORT)
data = s.recv(1024)
s.close()
print "%s" % data
</code></pre>
<p>Gives me error</p>
<pre><code>File "main.txt", line 7
data = s.recv(1024)
^
SyntaxError: invaild syntax
</code></pre>
... | 0 | 2009-02-23T14:22:21Z | 577,784 | <p>You've forgot parenthesis.</p>
<pre><code>s.connect((HOST, PORT))
</code></pre>
| 4 | 2009-02-23T14:24:33Z | [
"python"
] |
Python Socket help (Syntax error) | 577,779 | <pre><code>import socket
HOST = "swemach.se"
PORT = 21
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((HOST, PORT)
data = s.recv(1024)
s.close()
print "%s" % data
</code></pre>
<p>Gives me error</p>
<pre><code>File "main.txt", line 7
data = s.recv(1024)
^
SyntaxError: invaild syntax
</code></pre>
... | 0 | 2009-02-23T14:22:21Z | 577,789 | <pre><code>(( HOST, PORT)
</code></pre>
<p>^ there you go</p>
| 4 | 2009-02-23T14:24:58Z | [
"python"
] |
PyQt: No such slot | 577,824 | <p>I am starting to learn Qt4 and Python, following along some tutorial i found on the interwebs. I have the following two files:</p>
<p>lcdrange.py:</p>
<pre><code>from PyQt4 import QtGui, QtCore
class LCDRange(QtGui.QWidget):
def __init__(self, parent=None):
QtGui.QWidget.__init... | 1 | 2009-02-23T14:37:06Z | 577,882 | <p>Try this:</p>
<pre><code>self.connect(lcdRange, QtCore.SIGNAL('valueChanged'), previousRange.setValue)
</code></pre>
<h1>What's the difference?</h1>
<p><a href="http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/pyqt4ref.html#signal-and-slot-support" rel="nofollow">The PyQt documentation</a> has a section abou... | 7 | 2009-02-23T14:57:53Z | [
"python",
"ruby",
"qt4",
"pyqt"
] |
PyQt: No such slot | 577,824 | <p>I am starting to learn Qt4 and Python, following along some tutorial i found on the interwebs. I have the following two files:</p>
<p>lcdrange.py:</p>
<pre><code>from PyQt4 import QtGui, QtCore
class LCDRange(QtGui.QWidget):
def __init__(self, parent=None):
QtGui.QWidget.__init... | 1 | 2009-02-23T14:37:06Z | 958,995 | <p>NOTE</p>
<p>The "text" within the SIGNAL must match the c++ API documentation. </p>
<pre><code># This will work - its IDENTICAL to the documentation
QtCore.SIGNAL('customContextMenuRequested(const QPoint&)')
# this wont
QtCore.SIGNAL('customContextMenuRequested(QPoint&)')
# and this wont
QtCore.SIGNAL('... | 0 | 2009-06-06T04:29:47Z | [
"python",
"ruby",
"qt4",
"pyqt"
] |
PyQt: No such slot | 577,824 | <p>I am starting to learn Qt4 and Python, following along some tutorial i found on the interwebs. I have the following two files:</p>
<p>lcdrange.py:</p>
<pre><code>from PyQt4 import QtGui, QtCore
class LCDRange(QtGui.QWidget):
def __init__(self, parent=None):
QtGui.QWidget.__init... | 1 | 2009-02-23T14:37:06Z | 1,750,986 | <p><br />
you forgot to put </p>
<pre><code>
@Qt.pyqtSlot()
</code></pre>
<p>above method you are using as slot. <br /></p>
<p>For example your code should look like this</p>
<pre><code>
@Qt.pyqtSlot('const QPoint&')
def setValue(self,value):
self.slider.setValue(value)
</code></pre>
<p>Here is one good pa... | 1 | 2009-11-17T18:55:25Z | [
"python",
"ruby",
"qt4",
"pyqt"
] |
How can I make this Python recursive function return a flat list? | 577,940 | <p>Look at this simple function</p>
<pre><code>def prime_factors(n):
for i in range(2,n):
if n % i == 0:
return i, prime_factors(n / i)
return n
</code></pre>
<p>Here's the result of <code>prime_factors(120)</code></p>
<pre><code>(2, (2, (2, (3, 5))))
</code></pre>
<p>Instead of nested tuples,... | 9 | 2009-02-23T15:12:37Z | 577,955 | <pre><code>def prime_factors(n):
for i in range(2,n):
if n % i == 0:
yield i
for p in prime_factors(n / i):
yield p
return
yield n
</code></pre>
<p>Example:</p>
<pre><code>>>> tuple(prime_factors(100))
(2, 2, 5, 5)
</code></pre>
| 10 | 2009-02-23T15:16:14Z | [
"python",
"recursion"
] |
How can I make this Python recursive function return a flat list? | 577,940 | <p>Look at this simple function</p>
<pre><code>def prime_factors(n):
for i in range(2,n):
if n % i == 0:
return i, prime_factors(n / i)
return n
</code></pre>
<p>Here's the result of <code>prime_factors(120)</code></p>
<pre><code>(2, (2, (2, (3, 5))))
</code></pre>
<p>Instead of nested tuples,... | 9 | 2009-02-23T15:12:37Z | 577,961 | <pre><code>def prime_factors(n):
for i in range(2,n):
if n % i == 0:
return [i] + prime_factors(n / i)
return [n]
</code></pre>
| 18 | 2009-02-23T15:17:03Z | [
"python",
"recursion"
] |
How can I make this Python recursive function return a flat list? | 577,940 | <p>Look at this simple function</p>
<pre><code>def prime_factors(n):
for i in range(2,n):
if n % i == 0:
return i, prime_factors(n / i)
return n
</code></pre>
<p>Here's the result of <code>prime_factors(120)</code></p>
<pre><code>(2, (2, (2, (3, 5))))
</code></pre>
<p>Instead of nested tuples,... | 9 | 2009-02-23T15:12:37Z | 577,971 | <p>Without changing the original function, from <a href="http://kogs-www.informatik.uni-hamburg.de/~meine/python_tricks" rel="nofollow">Python Tricks</a>:</p>
<pre><code>def flatten(x):
"""flatten(sequence) -> list
Returns a single, flat list which contains all elements retrieved
from the sequence and ... | 7 | 2009-02-23T15:19:23Z | [
"python",
"recursion"
] |
How can I make this Python recursive function return a flat list? | 577,940 | <p>Look at this simple function</p>
<pre><code>def prime_factors(n):
for i in range(2,n):
if n % i == 0:
return i, prime_factors(n / i)
return n
</code></pre>
<p>Here's the result of <code>prime_factors(120)</code></p>
<pre><code>(2, (2, (2, (3, 5))))
</code></pre>
<p>Instead of nested tuples,... | 9 | 2009-02-23T15:12:37Z | 578,236 | <p>liw.fi suggested in a <a href="http://stackoverflow.com/questions/577940/how-can-i-make-this-python-recursive-function-return-a-flat-list/577961#577961">comment</a>:</p>
<blockquote>
<p>Instead of creating a new list for each return value, you could pass the list as an
argument and append to it. If the list ge... | 2 | 2009-02-23T16:18:41Z | [
"python",
"recursion"
] |
Easiest way to create a scrollable area using wxPython? | 578,200 | <p>Okay, so I want to display a series of windows within windows and have the whole lot scrollable. I've been hunting through <a href="http://docs.wxwidgets.org/stable/wx_wxscrolledwindow.html#wxscrolledwindow" rel="nofollow">the wxWidgets documentation</a> and a load of examples from various sources on t'internet. Mos... | 0 | 2009-02-23T16:12:36Z | 580,006 | <p>Oops.. turns out I was creating my child windows badly:</p>
<pre><code>wind = MyCustomWindow(self)
</code></pre>
<p>should be:</p>
<pre><code>wind = MyCustomWindow(self.scrolling_window)
</code></pre>
<p>..which meant the child windows were waiting for the top-level window (the frame) to be re-drawn instead of l... | 1 | 2009-02-24T00:32:25Z | [
"python",
"scroll",
"wxwidgets",
"scrolledwindow"
] |
Python 2.5 to Python 2.2 converter | 578,262 | <p>I am working on a PyS60 application for S60 2nd Edition devices. I have coded my application logic in Python 2.5.</p>
<p>Is there any tool that automates th conversion from Python 2.5 to Python 2.2 or do I need to do in manually?</p>
| 1 | 2009-02-23T16:24:09Z | 578,337 | <p>I don't know of any tool that would go from 2.5 to 2.2 automatically; but there was one a while ago that did 2.3 to 2.2 by <a href="http://www.radlogic.com.au/downloads.htm" rel="nofollow">RADLogic</a>.</p>
<p>Depending on how many recent features your code uses, it may be trivial to convert it manually. </p>
<p>I... | 1 | 2009-02-23T16:42:25Z | [
"python",
"pys60"
] |
Python 2.5 to Python 2.2 converter | 578,262 | <p>I am working on a PyS60 application for S60 2nd Edition devices. I have coded my application logic in Python 2.5.</p>
<p>Is there any tool that automates th conversion from Python 2.5 to Python 2.2 or do I need to do in manually?</p>
| 1 | 2009-02-23T16:24:09Z | 578,966 | <p>The latest Python for S60, <a href="http://discussion.forum.nokia.com/forum/showthread.php?t=154215" rel="nofollow">1.9.0</a>, actually includes Python 2.5.1. So maybe you don't need to convert.</p>
| 3 | 2009-02-23T19:23:54Z | [
"python",
"pys60"
] |
Python program to find fibonacci series. More Pythonic way | 578,379 | <p>There is another thread to discuss Fibo series in Python. This is to tweak code into more pythonic. <a href="http://stackoverflow.com/questions/494594/how-to-write-the-fibonacci-sequence-in-python">How to write the Fibonacci Sequence in Python</a></p>
<p>I am in love with this program I wrote to solve Project Euler... | 6 | 2009-02-23T16:53:23Z | 578,393 | <p>For one thing, I would suggest summing up the terms as you calculate them rather than storing them in an array and summing the array afterwards, since you don't need to do anything with the individual terms other than adding them up. (That's just good computational sense in any language)</p>
| 4 | 2009-02-23T16:56:56Z | [
"python"
] |
Python program to find fibonacci series. More Pythonic way | 578,379 | <p>There is another thread to discuss Fibo series in Python. This is to tweak code into more pythonic. <a href="http://stackoverflow.com/questions/494594/how-to-write-the-fibonacci-sequence-in-python">How to write the Fibonacci Sequence in Python</a></p>
<p>I am in love with this program I wrote to solve Project Euler... | 6 | 2009-02-23T16:53:23Z | 578,417 | <p>I would make the following changes:</p>
<ul>
<li>Use iteration instead of recursion</li>
<li>Just keep a running total instead of keeping a list of all Fibonacci numbers and then finding the sum of the even ones a posterior</li>
</ul>
<p>Other than that, it's <em>reasonably</em> Pythonic.</p>
<pre><code>def even_... | 2 | 2009-02-23T17:00:56Z | [
"python"
] |
Python program to find fibonacci series. More Pythonic way | 578,379 | <p>There is another thread to discuss Fibo series in Python. This is to tweak code into more pythonic. <a href="http://stackoverflow.com/questions/494594/how-to-write-the-fibonacci-sequence-in-python">How to write the Fibonacci Sequence in Python</a></p>
<p>I am in love with this program I wrote to solve Project Euler... | 6 | 2009-02-23T16:53:23Z | 578,424 | <p>Using generators is a Pythonic way to generate long sequences while preserving memory:</p>
<pre><code>def fibonacci():
a, b = 0, 1
while True:
yield a
a, b = b, a + b
import itertools
upto_4000000 = itertools.takewhile(lambda x: x <= 4000000, fibonacci())
print(sum(x for x in upto_4000000 if x % 2 =... | 16 | 2009-02-23T17:02:01Z | [
"python"
] |
Python program to find fibonacci series. More Pythonic way | 578,379 | <p>There is another thread to discuss Fibo series in Python. This is to tweak code into more pythonic. <a href="http://stackoverflow.com/questions/494594/how-to-write-the-fibonacci-sequence-in-python">How to write the Fibonacci Sequence in Python</a></p>
<p>I am in love with this program I wrote to solve Project Euler... | 6 | 2009-02-23T16:53:23Z | 578,426 | <p>First I'd do fibo() as a generator:</p>
<pre><code>def fibo(a=-1,b=1,upto=4000000):
while a+b<upto:
a,b = b,a+b
yield b
</code></pre>
<p>Then I'd also select for evenness as a generator rather than a list comprehension.</p>
<pre><code>print sum(i for i in fibo() if not i%2)
</code></pre>
| 12 | 2009-02-23T17:02:33Z | [
"python"
] |
Python program to find fibonacci series. More Pythonic way | 578,379 | <p>There is another thread to discuss Fibo series in Python. This is to tweak code into more pythonic. <a href="http://stackoverflow.com/questions/494594/how-to-write-the-fibonacci-sequence-in-python">How to write the Fibonacci Sequence in Python</a></p>
<p>I am in love with this program I wrote to solve Project Euler... | 6 | 2009-02-23T16:53:23Z | 578,491 | <p>I'd use the fibonacci generator as in <a href="http://stackoverflow.com/questions/578379/python-program-to-find-fibonacci-series-more-pythonic-way/578424#578424">@constantin' answer</a> but generator expressions could be replaced by a plain <code>for</code> loop:</p>
<pre><code>def fibonacci(a=0, b=1):
while Tr... | 2 | 2009-02-23T17:19:28Z | [
"python"
] |
Python program to find fibonacci series. More Pythonic way | 578,379 | <p>There is another thread to discuss Fibo series in Python. This is to tweak code into more pythonic. <a href="http://stackoverflow.com/questions/494594/how-to-write-the-fibonacci-sequence-in-python">How to write the Fibonacci Sequence in Python</a></p>
<p>I am in love with this program I wrote to solve Project Euler... | 6 | 2009-02-23T16:53:23Z | 3,277,816 | <p>Here's an alternate direct method
It relies on a few properties:</p>
<ol>
<li>Each Fibonacci number can be calculated directly as floor( pow( phi, n ) + 0.5 ) (See Computation by Rounding in <a href="http://en.wikipedia.org/wiki/Fibonacci_number" rel="nofollow">http://en.wikipedia.org/wiki/Fibonacci_number</a> ). C... | 1 | 2010-07-19T00:37:09Z | [
"python"
] |
Python program to find fibonacci series. More Pythonic way | 578,379 | <p>There is another thread to discuss Fibo series in Python. This is to tweak code into more pythonic. <a href="http://stackoverflow.com/questions/494594/how-to-write-the-fibonacci-sequence-in-python">How to write the Fibonacci Sequence in Python</a></p>
<p>I am in love with this program I wrote to solve Project Euler... | 6 | 2009-02-23T16:53:23Z | 7,895,823 | <p>In Python 3 at least if you give a generator to the <code>sum</code> function it will lazily evaluate it so there is no need to reinvent the wheel.</p>
<p>This is what @Constantin did and is correct.</p>
<p>Tested by comparing the memory usage of using generators:</p>
<p><code>sum(range(9999999))</code></p>
<p>c... | 0 | 2011-10-25T21:00:26Z | [
"python"
] |
Python program to find fibonacci series. More Pythonic way | 578,379 | <p>There is another thread to discuss Fibo series in Python. This is to tweak code into more pythonic. <a href="http://stackoverflow.com/questions/494594/how-to-write-the-fibonacci-sequence-in-python">How to write the Fibonacci Sequence in Python</a></p>
<p>I am in love with this program I wrote to solve Project Euler... | 6 | 2009-02-23T16:53:23Z | 17,396,950 | <pre><code>print ("Fibonacci Series\n")
a = input ("Enter a nth Term: ")
b = 0
x = 0
y = 1
print x,("\n"), y
while b <=a-2:
b = b+1
z = x + y
print z
x = y
y = z
</code></pre>
| 0 | 2013-07-01T03:10:48Z | [
"python"
] |
Python program to find fibonacci series. More Pythonic way | 578,379 | <p>There is another thread to discuss Fibo series in Python. This is to tweak code into more pythonic. <a href="http://stackoverflow.com/questions/494594/how-to-write-the-fibonacci-sequence-in-python">How to write the Fibonacci Sequence in Python</a></p>
<p>I am in love with this program I wrote to solve Project Euler... | 6 | 2009-02-23T16:53:23Z | 24,467,465 | <pre><code>def main():
a = 1
b = 2
num = 2
while b < 4000000:
a, b = b, a+b
num += b if b % 2 == 0 else 0
print num
if __name__ == '__main__':
main()
</code></pre>
| 0 | 2014-06-28T13:49:48Z | [
"python"
] |
How to pass values by ref in Python? | 578,635 | <p>Basically I am using the C++ API of an app, but there is no reference for its python access. One variable is passed by ref, like so:</p>
<pre><code>GetPoint ( Point &p, Object obj )
</code></pre>
<p>so how can I translate to Python? Is there a pass by ref symbol?</p>
| 3 | 2009-02-23T17:58:20Z | 578,645 | <p>There is no pass by reference symbol in Python.</p>
<p>Just modify the passed in point, your modifications will be visible from the calling function.</p>
<pre><code>>>> def change(obj):
... obj.x = 10
...
>>> class Point(object): x,y = 0,0
...
>>> p = Point()
>>> p.x
0
>&... | 4 | 2009-02-23T18:00:41Z | [
"python",
"variables",
"pass-by-reference"
] |
How to pass values by ref in Python? | 578,635 | <p>Basically I am using the C++ API of an app, but there is no reference for its python access. One variable is passed by ref, like so:</p>
<pre><code>GetPoint ( Point &p, Object obj )
</code></pre>
<p>so how can I translate to Python? Is there a pass by ref symbol?</p>
| 3 | 2009-02-23T17:58:20Z | 578,647 | <p>I'm pretty sure Python passes the value of the reference to a variable. <a href="http://rg03.wordpress.com/2007/04/21/semantics-of-python-variable-names-from-a-c-perspective/" rel="nofollow">This article</a> can probably explain it better than I.</p>
| 2 | 2009-02-23T18:01:43Z | [
"python",
"variables",
"pass-by-reference"
] |
How to pass values by ref in Python? | 578,635 | <p>Basically I am using the C++ API of an app, but there is no reference for its python access. One variable is passed by ref, like so:</p>
<pre><code>GetPoint ( Point &p, Object obj )
</code></pre>
<p>so how can I translate to Python? Is there a pass by ref symbol?</p>
| 3 | 2009-02-23T17:58:20Z | 578,649 | <p>Objects are always passed as reference in Python. So wrapping up in object produces similar effect.</p>
| 1 | 2009-02-23T18:02:10Z | [
"python",
"variables",
"pass-by-reference"
] |
How to pass values by ref in Python? | 578,635 | <p>Basically I am using the C++ API of an app, but there is no reference for its python access. One variable is passed by ref, like so:</p>
<pre><code>GetPoint ( Point &p, Object obj )
</code></pre>
<p>so how can I translate to Python? Is there a pass by ref symbol?</p>
| 3 | 2009-02-23T17:58:20Z | 578,651 | <p>It's likely that your Python bindings have turned that signature into:</p>
<pre><code>Point GetPoint(Object obj)
</code></pre>
<p>or even:</p>
<pre><code>Point Object::GetPoint()
</code></pre>
<p>So look into the bindings' documentation or sources.</p>
| 3 | 2009-02-23T18:02:48Z | [
"python",
"variables",
"pass-by-reference"
] |
How to pass values by ref in Python? | 578,635 | <p>Basically I am using the C++ API of an app, but there is no reference for its python access. One variable is passed by ref, like so:</p>
<pre><code>GetPoint ( Point &p, Object obj )
</code></pre>
<p>so how can I translate to Python? Is there a pass by ref symbol?</p>
| 3 | 2009-02-23T17:58:20Z | 578,655 | <p>There is not ref by symbol in python - the right thing to do depends on your API. The question to ask yourself is who owns the object passed from C++ to python. Sometimes, the easiest ting it just to copy the object into a python object, but that may not always be the best thing to do.</p>
<p>You may be interested ... | 1 | 2009-02-23T18:04:21Z | [
"python",
"variables",
"pass-by-reference"
] |
Alternative to 'for i in xrange(len(x))' | 578,677 | <p>So I see in <a href="http://stackoverflow.com/questions/576988/python-specific-antipatterns">another post</a> the following "bad" snippet, but the only alternatives I have seen involve patching Python.</p>
<pre><code>for i in xrange(len(something)):
workwith = something[i]
# do things with workwith...
</code></... | 9 | 2009-02-23T18:10:52Z | 578,685 | <p>See <a href="http://docs.python.org/glossary.html#term-pythonic">Pythonic</a></p>
<pre><code>for workwith in something:
# do things with workwith
</code></pre>
| 22 | 2009-02-23T18:12:36Z | [
"python",
"for-loop",
"anti-patterns"
] |
Alternative to 'for i in xrange(len(x))' | 578,677 | <p>So I see in <a href="http://stackoverflow.com/questions/576988/python-specific-antipatterns">another post</a> the following "bad" snippet, but the only alternatives I have seen involve patching Python.</p>
<pre><code>for i in xrange(len(something)):
workwith = something[i]
# do things with workwith...
</code></... | 9 | 2009-02-23T18:10:52Z | 578,689 | <p>for example:</p>
<pre><code>[workwith(i) for i in something]
</code></pre>
| 0 | 2009-02-23T18:13:05Z | [
"python",
"for-loop",
"anti-patterns"
] |
Alternative to 'for i in xrange(len(x))' | 578,677 | <p>So I see in <a href="http://stackoverflow.com/questions/576988/python-specific-antipatterns">another post</a> the following "bad" snippet, but the only alternatives I have seen involve patching Python.</p>
<pre><code>for i in xrange(len(something)):
workwith = something[i]
# do things with workwith...
</code></... | 9 | 2009-02-23T18:10:52Z | 578,692 | <p>What is <code>x</code>? If its a sequence or iterator or string then </p>
<pre><code>for i in x:
workwith = i
</code></pre>
<p>will work fine.</p>
| -3 | 2009-02-23T18:14:03Z | [
"python",
"for-loop",
"anti-patterns"
] |
Alternative to 'for i in xrange(len(x))' | 578,677 | <p>So I see in <a href="http://stackoverflow.com/questions/576988/python-specific-antipatterns">another post</a> the following "bad" snippet, but the only alternatives I have seen involve patching Python.</p>
<pre><code>for i in xrange(len(something)):
workwith = something[i]
# do things with workwith...
</code></... | 9 | 2009-02-23T18:10:52Z | 578,694 | <p>If you need to know the index in the loop body:</p>
<pre><code>for index, workwith in enumerate(something):
print "element", index, "is", workwith
</code></pre>
| 23 | 2009-02-23T18:14:59Z | [
"python",
"for-loop",
"anti-patterns"
] |
Alternative to 'for i in xrange(len(x))' | 578,677 | <p>So I see in <a href="http://stackoverflow.com/questions/576988/python-specific-antipatterns">another post</a> the following "bad" snippet, but the only alternatives I have seen involve patching Python.</p>
<pre><code>for i in xrange(len(something)):
workwith = something[i]
# do things with workwith...
</code></... | 9 | 2009-02-23T18:10:52Z | 582,541 | <p>As there are <a href="http://stackoverflow.com/questions/578677/alternative-to-for-i-in-xrangelenx/578694#578694">two</a> <a href="http://stackoverflow.com/questions/578677/alternative-to-for-i-in-xrangelenx/578685#578685">answers</a> to question that are perfectly valid (with an assumption each) and author of the q... | 11 | 2009-02-24T16:54:18Z | [
"python",
"for-loop",
"anti-patterns"
] |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.