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https://api.github.com/repos/pandas-dev/pandas/issues/21512 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21512/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21512/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21512/events | https://github.com/pandas-dev/pandas/pull/21512 | 333,009,461 | MDExOlB1bGxSZXF1ZXN0MTk1MzQ1NTQ3 | 21,512 | Maintain Dict Ordering with Concat | {
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- [x] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
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although the set is instance of dict, it should not sort if it is also instance of OrderedDict | {
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```python
In [2]: def cast_or_not(dtype1, dtype2):
...: s = pd.Series(0, index=range(3), dtype=dtype1)
...: s[0] = dtype2(1)
...: return s.dtype == dtype1
In [3]: cast_or_not(bool, float)
Out[3]: True
In [4]: cast_or_not(float, boo... | {
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- [x] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
The file is split out, the number of tests remains 377 (2 skips on my machine; all other test cases pass), the code uses fixtures in all instances, new fixtures are in a local conftest.py file, and t... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21515 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21515/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21515/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21515/events | https://github.com/pandas-dev/pandas/pull/21515 | 333,086,025 | MDExOlB1bGxSZXF1ZXN0MTk1MzkxMTU1 | 21,515 | Fix passing empty label to df drop | {
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- Tests added / passed
-Drop method in indexes/base.py, docs say KeyError should only be raised if **none** of labels are found in selected axis. However `pd.DataFrame(index=[1,2,3]).drop([1, 4])` throws.
-Makes behaviour consistent for .drop() across unique/non-unique indexes.
Both the below wi... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21516 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21516/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21516/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21516/events | https://github.com/pandas-dev/pandas/issues/21516 | 333,140,552 | MDU6SXNzdWUzMzMxNDA1NTI= | 21,516 | pandas.read_csv leaks memory while opening massive files with chunksize & iterator=True | {
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] | closed | false | null | [] | null | 6 | 2018-06-18T05:49:46Z | 2018-07-04T02:59:25Z | 2018-07-04T02:59:25Z | NONE | null | I am using anaconda and my pandas version is 0.23.1. When dealing with single large file, setting chunksize or iterator=True works fine and memory usage is low. The problem raises when I am trying to dealing with 5000+ files (file names are in `filelist`):
```python
trajectory = [pd.read_csv(f, delim_whitespace=Tru... | {
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```python
In [2]: mi = pd.MultiIndex.from_product([[1, 2]]*2)
In [3]: mi == mi[0]
Out[3]: False
In [4]: fl = pd.Index(range(4))
In [5]: fl == fl[0]
Out[5]: array([ True, False, False, False])
In [6]: fl == mi[0]
Out[6]: False
```
#### Problem ... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21518 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21518/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21518/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21518/events | https://github.com/pandas-dev/pandas/issues/21518 | 333,179,446 | MDU6SXNzdWUzMzMxNzk0NDY= | 21,518 | DOC: Fix indentation of lists in rst files | {
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"followers_url": "https://api.github... | 0 | 2018-06-18T08:40:34Z | 2018-06-20T10:14:26Z | 2018-06-20T10:14:26Z | MEMBER | null | The indentation for lists in the restructuredText standard is next:
- No indentation for top level lists
- 4 space indentation for sublists
When a top list is indented (with for example one space), the list is included in a `blockquote` element when rendered as html. In the current sphinx template, this does not s... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21519 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21519/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21519/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21519/events | https://github.com/pandas-dev/pandas/pull/21519 | 333,179,863 | MDExOlB1bGxSZXF1ZXN0MTk1NDU1ODU1 | 21,519 | Fixing documentation lists indentation (#21518) | {
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- [ ] tests added / passed
- [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry
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... | 5 | 2018-06-18T10:57:25Z | 2021-06-20T04:51:38Z | null | MEMBER | null | In #21518 it's been identified that several lists in the documentation don't follow the restructuredText standard (no indentation for top-level lists, 4 space indentation for sublists).
In that issue, (hopefully) all the formatting has been fixed manually. But it'd be useful to have a script that validates all the d... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21521 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21521/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21521/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21521/events | https://github.com/pandas-dev/pandas/issues/21521 | 333,234,421 | MDU6SXNzdWUzMzMyMzQ0MjE= | 21,521 | BUG: groupby().ffill() adds group labels as extra column | {
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"closed_at": "2019-07-19T00:34:29Z",
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Input:
```python
pd.DataFrame(0, [1,2], [3,4]).groupby([5, 6]).ffill()
```
Output:
```python
NaN 3 4
1 5 0 0
2 6 0 0
```
#### Problem description
`groupby().ffill()` adds an additional column to the dataframe, containing a copy... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21522 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21522/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21522/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21522/events | https://github.com/pandas-dev/pandas/issues/21522 | 333,238,768 | MDU6SXNzdWUzMzMyMzg3Njg= | 21,522 | MultiIndex.is_unique is unbearably slow | {
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```python
class Integer(object):
goal_time = 0.2
def setup(self):
self.mi_int = MultiIndex.from_product([np.arange(1000),
np.arange(1000)],
name... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21523 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21523/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21523/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21523/events | https://github.com/pandas-dev/pandas/pull/21523 | 333,261,801 | MDExOlB1bGxSZXF1ZXN0MTk1NTE5MDU0 | 21,523 | PERF: remove useless overrides | {
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"followers_url": "https://api.github.com/users/jre... | 2 | 2018-06-18T13:07:25Z | 2018-06-29T14:55:16Z | 2018-06-18T21:43:00Z | MEMBER | null | - [x] closes #21522
- [x] tests passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry
Asv run:
```
before after ratio
[9e982e18] [705f0e3b]
- 243±7ms 186±4ms 0.77 multiindex_object.GetLoc.time_large_get_loc_... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21524 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21524/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21524/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21524/events | https://github.com/pandas-dev/pandas/issues/21524 | 333,315,060 | MDU6SXNzdWUzMzMzMTUwNjA= | 21,524 | "maximum recursion depth exceeded" when calculating duplicates in big DataFrame (regression comparing to the old version) | {
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"followers_url": "https://api.github.com/users/jre... | 9 | 2018-06-18T15:17:49Z | 2018-06-21T02:54:24Z | 2018-06-21T02:54:24Z | CONTRIBUTOR | null | #### Code Sample, a copy-pastable example if possible
I'm currently in the middle of upgrading old system from old pandas (0.12) to the new version (0.23.0). One of the parts of the system is duplicate columns detection in medium-sized DataFrames (~100 columns, few thousand rows). We were detecting it like this `dupes... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21525 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21525/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21525/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21525/events | https://github.com/pandas-dev/pandas/issues/21525 | 333,323,818 | MDU6SXNzdWUzMzMzMjM4MTg= | 21,525 | NotImplementedError: 'AnnAssign' nodes are not implemented but numpy-like syntax works | {
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] | closed | false | null | [] | null | 10 | 2018-06-18T15:38:45Z | 2020-01-09T05:00:18Z | 2018-08-30T12:46:57Z | NONE | null | My dataframe ``df`` has a column called "Unnamed:_6" which is of dtype ``object``.
Running the following command works just fine:
```python
df[df['Unnamed:_6'] == "Foo"]
```
However, the equivalent line:
```python
df.query('Unnamed:_6 == "Foo"')
```
raises the following exception:
```python
NotImplemente... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21526 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21526/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21526/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21526/events | https://github.com/pandas-dev/pandas/issues/21526 | 333,325,369 | MDU6SXNzdWUzMzMzMjUzNjk= | 21,526 | ENH: allow ranges to be set on Styler .bar() | {
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- extreme outliers in a column mask differences in other values;
- comparisons across columns are not supported.
One solution would be to allow the setting of explicit bou... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21527 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21527/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21527/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21527/events | https://github.com/pandas-dev/pandas/issues/21527 | 333,328,721 | MDU6SXNzdWUzMzMzMjg3MjE= | 21,527 | ENH: Styler display of NaN / null Values | {
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"description": "__... | closed | false | null | [] | null | 2 | 2018-06-18T15:49:43Z | 2019-11-25T13:54:21Z | 2019-11-25T13:54:21Z | CONTRIBUTOR | null | The `Styler` allows for null cells to be highlighted using `.style.highlight_null()` but a `nan` text string will also be displayed.
If a column is coloured using `.background_gradient()` it must be a numeric type otherwise numerical comparisons fail. This means that using a construction of the form `..fillna('')` o... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21528 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21528/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21528/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21528/events | https://github.com/pandas-dev/pandas/issues/21528 | 333,332,045 | MDU6SXNzdWUzMzMzMzIwNDU= | 21,528 | [DOC]: Explain the choice of absolute/relative tolerance for check_less_precise in assert_almost_equal | {
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"followers_url": "https://api.github... | 3 | 2018-06-18T15:57:01Z | 2018-06-22T10:21:14Z | 2018-06-22T10:21:14Z | CONTRIBUTOR | null | The docstring in https://github.com/pandas-dev/pandas/blob/9e982e18678c47c83ce2bb5932f844e2d9ee21f3/pandas/util/testing.py#L226-L229 does not specify how the number of decimal digits is going to be used, yet https://github.com/pandas-dev/pandas/blob/9e982e18678c47c83ce2bb5932f844e2d9ee21f3/pandas/_libs/testing.pyx#L203... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21529 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21529/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21529/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21529/events | https://github.com/pandas-dev/pandas/issues/21529 | 333,366,015 | MDU6SXNzdWUzMzMzNjYwMTU= | 21,529 | Current status of pandas comparing with pandas2 | {
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"de... | closed | false | null | [] | null | 4 | 2018-06-18T17:31:06Z | 2018-11-29T06:24:06Z | 2018-11-29T06:24:06Z | NONE | null | - What's the current status of pandas comparing with the design doc of pandas2 (https://pandas-dev.github.io/pandas2/)?
- Have we fixed some problems and finished some of goals mentioned in pandas2?
- Is there a roadmap for future pandas ?
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"followers_url": "https://api.github... | 5 | 2018-06-18T18:22:58Z | 2018-06-22T22:59:28Z | 2018-06-22T22:59:28Z | CONTRIBUTOR | null | #### Code Sample, a copy-pastable example if possible
Input:
```python
np.zeros((1, 2)) @ pd.Series(np.zeros(2))
```
Output:
```python
File "<ipython-input-83-3148232e4345>", line 1, in <module>
np.zeros((1, 2)) @ pd.Series(np.zeros(2))
File "pandas/core/series.py", line 2061, in __rmatmul__
r... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21531 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21531/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21531/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21531/events | https://github.com/pandas-dev/pandas/pull/21531 | 333,383,755 | MDExOlB1bGxSZXF1ZXN0MTk1NjA5NDY4 | 21,531 | BUG: Allow IOErrors when attempting to retrieve default client encoding. | {
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"followers_url": "https://api.github... | 30 | 2018-06-18T18:26:25Z | 2018-09-19T20:18:02Z | 2018-09-19T14:16:11Z | CONTRIBUTOR | null | - [X] closes #21552
When using mod_wsgi, access to sys.stdout is restricted by default. To handle this case, catch a base exception instead of a more specific AttributeError during this process to include the thrown IOError by mod_wsgi.
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https://api.github.com/repos/pandas-dev/pandas/issues/21532 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21532/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21532/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21532/events | https://github.com/pandas-dev/pandas/pull/21532 | 333,395,213 | MDExOlB1bGxSZXF1ZXN0MTk1NjE4MDk4 | 21,532 | fixed unicode issue (21499) using requests library | {
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- [ ] tests added / passed
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry
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https://api.github.com/repos/pandas-dev/pandas/issues/21533 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21533/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21533/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21533/events | https://github.com/pandas-dev/pandas/pull/21533 | 333,484,735 | MDExOlB1bGxSZXF1ZXN0MTk1Njg3MzEz | 21,533 | remove daytime attr, move getstate and setstate to base class | {
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"followers_url": "https://api.github... | 3 | 2018-06-19T01:04:42Z | 2018-06-22T03:27:52Z | 2018-06-19T11:12:53Z | MEMBER | null | If/when #18224 is revived to make `_BaseOffset` a `cdef class`, we'll need to move `__getstate__` and `__setstate__` into the base class (and then make some changes). This moves the two methods pre-emptively so that we'll have a smaller diff for the next steps.
Also removes an attr `self.daytime` that is not used a... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21534 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21534/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21534/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21534/events | https://github.com/pandas-dev/pandas/pull/21534 | 333,507,466 | MDExOlB1bGxSZXF1ZXN0MTk1NzAzMzE5 | 21,534 | DOC: remove grammar duplication in groupby docs | {
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"followers_url": "https://api.github... | 3 | 2018-06-19T03:33:19Z | 2018-06-19T12:20:22Z | 2018-06-19T08:30:48Z | CONTRIBUTOR | null | "can be could be" -> "could be" | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21535 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21535/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21535/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21535/events | https://github.com/pandas-dev/pandas/issues/21535 | 333,523,116 | MDU6SXNzdWUzMzM1MjMxMTY= | 21,535 | Unexpected behaviour of apply function | {
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```python
import numpy as np
import pandas as pd
tmp = np.array([[1,1,1], [1,0,0], [1,1,0], [1,1,0]])
tmp_df = pd.DataFrame(tmp)
tmp_df.apply(lambda x: x[x==1].index.tolist() , axis=1) # throws ValueError [I]
Out[0]:
ValueError: could not broadcast inp... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21536 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21536/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21536/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21536/events | https://github.com/pandas-dev/pandas/issues/21536 | 333,552,799 | MDU6SXNzdWUzMzM1NTI3OTk= | 21,536 | json_normalize throws `TypeError` with array of values and `record_prefix` | {
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"followers_url": "https://api.github.com/users/jre... | 2 | 2018-06-19T07:38:05Z | 2018-06-22T23:07:22Z | 2018-06-22T23:07:22Z | CONTRIBUTOR | null | #### Code Sample, a copy-pastable example if possible
```python
from pandas.io.json import json_normalize
df = json_normalize({'A': [1, 2]}, 'A', record_prefix='Prefix.')
print(df)
```
#### Problem description
The above code throws a `TypeError`:
```
Traceback (most recent call last):
File "c:\Users... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21537 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21537/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21537/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21537/events | https://github.com/pandas-dev/pandas/issues/21537 | 333,561,858 | MDU6SXNzdWUzMzM1NjE4NTg= | 21,537 | json_normalize has inconsistent behaviors while flattening nested array elements | {
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"followers_url": "https://api.github.com/users/wesm... | 6 | 2018-06-19T08:07:09Z | 2019-10-29T04:47:51Z | 2019-10-25T16:54:35Z | CONTRIBUTOR | null | #### Code Sample, a copy-pastable example if possible
```python
from pandas.io.json import json_normalize
df1 = json_normalize([{'A': {'B': 1}}])
df2 = json_normalize({'dummy': [{'A': {'B': 1}}]}, 'dummy')
print(df1)
print(df2)
```
#### Problem description
The above code produces:
| |A.B|
|-|-|
|0... | {
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When I use to_dict() to convert the dataframe to dict in "split" mode. I just found that the key of index can not be changed. Is that possibile that to add a support: change the key of index from "index" to df.index.name or any way that I can change the key of inde... | {
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- [x] closes #21535
- [x] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
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https://api.github.com/repos/pandas-dev/pandas/issues/21540 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21540/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21540/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21540/events | https://github.com/pandas-dev/pandas/pull/21540 | 333,583,284 | MDExOlB1bGxSZXF1ZXN0MTk1NzU4Njc5 | 21,540 | BUG: Fix json_normalize throwing TypeError (#21536) | {
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- [x] closes #21536
- [x] tests added / passed
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
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- [x] closes #21524
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```python
import pandas as pd
x = pd.Timestamp('2018-07-20 18:15:00+0200')
y = pd.DataFrame([{'date': x}])
y['date'].dt.date[0]
```
#### Problem description
In Pandas 0.23.0, this returns `2018-07-19` while in 0.22.0 it returns `2018-07-20`. The behaviour in 0.22.0 is the expected one. I ... | {
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- [x] closes #21372
- [x] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
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... | closed | false | null | [] | null | 1 | 2018-06-19T15:38:23Z | 2018-06-27T19:11:46Z | 2018-06-27T19:11:10Z | CONTRIBUTOR | null | - [x] closes #21469
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```python
# py2 (0.19.2) - the stringio has the (gzip'd) dataframe as a csv. can write to file and read back.
~ $ ipython
Python 2.7.15 (default, May 1 2018, 16:44:37)
Type "copyright", "credits" or "license" for more information.
IPython 5.6.0 -- An en... | {
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Series input:
```python
import pandas as pd
dts1 = pd.date_range('20150101', '20150105', tz='America/New_York')
df1 = pd.DataFrame({'date': dts1})
dts2 = pd.date_range('20150103', '20150107', tz='America/New_York')
df2 = pd.DataFrame({'dat... | {
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This is still a WIP, so no tests yet. Also more work to do on docstrings, whatsnew, and some overview documentation similar to `pandas/doc/sourc... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21548 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21548/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21548/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21548/events | https://github.com/pandas-dev/pandas/pull/21548 | 333,870,064 | MDExOlB1bGxSZXF1ZXN0MTk1OTgyMjEw | 21,548 | style.bar: add support for axis=None (tablewise application instead of rowwise or columnwise) | {
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- add support for axis=None
- fix minor bug with align 'zero' and width < 100
- make generated CSS gradients more compact
- [x] Closes #21525
- [x] tests added / passed
- [x] passes `git diff origin/master -u -- "*.py" | flake8 --diff`... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21549 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21549/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21549/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21549/events | https://github.com/pandas-dev/pandas/pull/21549 | 333,870,773 | MDExOlB1bGxSZXF1ZXN0MTk1OTgyNzU3 | 21,549 | use ccalendar instead of np_datetime | {
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AFAICT the np_datetime.c versions of these functions are noticeably more performant than the cython versions. I could use help verifying this observation since asv doesn't work well for me.
Best guess is that lookups in np_datetime.c's `days_per_month_table[2][12]` are more efficient than lookups in... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21550 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21550/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21550/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21550/events | https://github.com/pandas-dev/pandas/pull/21550 | 333,887,767 | MDExOlB1bGxSZXF1ZXN0MTk1OTk1NDg3 | 21,550 | Update "See Also" section of pandas/core/generic.py | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21551 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21551/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21551/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21551/events | https://github.com/pandas-dev/pandas/issues/21551 | 333,899,400 | MDU6SXNzdWUzMzM4OTk0MDA= | 21,551 | to_numeric not correctly converting decimal type to float | {
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"followers_url": "https://api.github... | 3 | 2018-06-20T02:08:45Z | 2018-06-22T10:05:46Z | 2018-06-22T10:05:46Z | NONE | null | #### Code Sample, a copy-pastable example if possible
```python
import pandas as pd
import decimal
# Set up date
data = {'line': [1,2,3,4],
'decimal': [12345678.1, 12345678.01, 12345678.001, 12345678.0001],
'original': [12345678.1, 12345678.01, 12345678.001, 12345678.0001]}
df = pd.DataFram... | {
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"followers_url": "https://api.github... | 0 | 2018-06-20T03:17:19Z | 2018-09-19T14:16:11Z | 2018-09-19T14:16:11Z | CONTRIBUTOR | null | #### Problem description
We're using pandas on the backend of our internal web server for a few utilities. Any attempt to import the library causes an IOError to be thrown due to our setup of mod_wsgi restricting stdout access by default (WSGIRestrictStdout On).
The cause of this error is an attempt to get the clie... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21553 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21553/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21553/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21553/events | https://github.com/pandas-dev/pandas/pull/21553 | 333,928,215 | MDExOlB1bGxSZXF1ZXN0MTk2MDI0OTIz | 21,553 | Update tutorials.rst | {
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] | closed | false | null | [] | null | 2 | 2018-06-20T05:23:33Z | 2018-06-20T09:46:45Z | 2018-06-20T09:46:45Z | NONE | null | - [ ] closes #xxxx
- [ ] tests added / passed
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry
Added a new video listing.
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```python
In[1]: import pandas as pd
In[2]: df = pd.DataFrame({"key": ["a", "a", "b", "b", "b"],
"value_str": ["u1", "u2", "u3", "u4", "u5"],
"value_int": range(5)})
In[3]: df
Out[3]:
key value_str value_int
0 a u1 0
1 a ... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21555 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21555/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21555/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21555/events | https://github.com/pandas-dev/pandas/issues/21555 | 334,047,008 | MDU6SXNzdWUzMzQwNDcwMDg= | 21,555 | Index Dtype Not Preserved During read_fwf | {
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Consider the following code:
```python
import io
import pandas as pd
# Trial FWF file:
data = io.StringIO('x10011\nx10012\nx10013\nx10024\nx20025\nx20026\nx20037\nx20038\n')
# Read and cast:
df1 = pd.read_fwf(data, widths=[2,3,1], header=None, dtype={0: str, 1: str... | {
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"color": "5319... | closed | false | null | [] | null | 6 | 2018-06-20T12:10:00Z | 2018-06-20T14:26:32Z | 2018-06-20T12:57:08Z | NONE | null | #### Code Sample, a copy-pastable example if possible
```python
# Your code here
import pandas as pd
fname = 'data.csv'
df = pd.read_csv(fname, decimal=',')
df.to_csv('data2.csv', decimal='.', index=False)
```
#### Problem description
data.csv content:
1,41552492693104
1,41552492693104
1,9509035661854... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21557 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21557/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21557/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21557/events | https://github.com/pandas-dev/pandas/issues/21557 | 334,071,861 | MDU6SXNzdWUzMzQwNzE4NjE= | 21,557 | KeyError error message could be less confusing | {
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"followers_url": "https://api.github... | 0 | 2018-06-20T13:15:59Z | 2018-06-21T09:42:42Z | 2018-06-21T09:42:42Z | MEMBER | null | #### Code Sample, a copy-pastable example if possible
```python
In [2]: pd.Series(range(3)).loc[4]
---------------------------------------------------------------------------
KeyError Traceback (most recent call last)
/home/nobackup/repo/pandas/pandas/core/indexing.py in _validat... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21558 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21558/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21558/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21558/events | https://github.com/pandas-dev/pandas/pull/21558 | 334,073,103 | MDExOlB1bGxSZXF1ZXN0MTk2MTM1NjA3 | 21,558 | ERR: Raise a simpler backtrace for missing key | {
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"followers_url": "https://api.github... | 2 | 2018-06-20T13:19:14Z | 2018-06-22T10:41:15Z | 2018-06-21T09:42:42Z | MEMBER | null | - [x] closes #21557
- [x] tests passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry
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https://api.github.com/repos/pandas-dev/pandas/issues/21559 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21559/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21559/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21559/events | https://github.com/pandas-dev/pandas/issues/21559 | 334,097,490 | MDU6SXNzdWUzMzQwOTc0OTA= | 21,559 | merge_asof fails to coerce float types | {
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```python
import numpy as np
import pandas as pd
df1 = pd.DataFrame({'x': pd.Series([1], dtype=np.float64)})
df2 = pd.DataFrame({'x': pd.Series([1], dtype=np.float32)})
df3 = pd.merge(df1, df2, on='x') # works
df4 = pd.merge_asof(df1, df2, on='x', direct... | {
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I'm using Pandas for data transformation and the I/O is HDFS(by using [HdfsCLI](http://hdfscli.readthedocs.io/en/latest/)).
When I use version 0.23.1, the ``to_csv`` function gives me ``AttributeError``:
```python
Traceback (most recent call last):
File "GEOCODAGE_REP_AGREE_STEP_2_V2... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21561 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21561/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21561/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21561/events | https://github.com/pandas-dev/pandas/issues/21561 | 334,156,279 | MDU6SXNzdWUzMzQxNTYyNzk= | 21,561 | Test Case for to_csv to sys.stdout | {
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"followers_url": "https://api.github... | 5 | 2018-06-20T16:27:22Z | 2018-06-22T23:04:39Z | 2018-06-22T23:04:39Z | NONE | null | #### Code Sample, a copy-pastable example if possible
```python
#! /usr/bin/env python3
import sys
import pandas as pd
import numpy as np
data = pd.DataFrame(np.random.randint(low=0, high=10, size=(5, 5)),
columns=['a', 'b', 'c', 'd', 'e'])
print('--------- Output ----------')
data.... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21562 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21562/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21562/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21562/events | https://github.com/pandas-dev/pandas/issues/21562 | 334,161,118 | MDU6SXNzdWUzMzQxNjExMTg= | 21,562 | DOC: Wrong documentation rendering when a space is missing after backticks | {
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"followers_url": "https://api.github... | 1 | 2018-06-20T16:36:57Z | 2018-06-21T10:10:32Z | 2018-06-21T10:10:32Z | MEMBER | null | It seems like the documentation is not rendering correctly when a space is not present after using backticks.
For example `making ``DataFrame`` render with monospace font` will work as expected.
But `using plural ``DataFrame``s does not have a space between `` and s` does not identify the closing backticks and th... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21563 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21563/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21563/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21563/events | https://github.com/pandas-dev/pandas/issues/21563 | 334,244,653 | MDU6SXNzdWUzMzQyNDQ2NTM= | 21,563 | float16 inconsistenly slow assignment | {
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"default"... | closed | false | null | [] | null | 5 | 2018-06-20T20:50:54Z | 2018-06-22T05:46:51Z | 2018-06-21T23:43:19Z | CONTRIBUTOR | null | I know float16 is not very supported a lot, but wanted to mention this at least for a reference if no one can help.
#### Code Sample, a copy-pastable example if possible
Every second assignment to a particular column is slow by several orders of magnitude on float16. Bear with me with the example - it's in ipytho... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21564 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21564/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21564/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21564/events | https://github.com/pandas-dev/pandas/issues/21564 | 334,247,463 | MDU6SXNzdWUzMzQyNDc0NjM= | 21,564 | Tick DateOffset Normalize whatsnew entry has an error | {
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... | 13 | 2018-06-20T21:00:00Z | 2021-06-20T04:54:39Z | null | CONTRIBUTOR | null | http://pandas-docs.github.io/pandas-docs-travis/whatsnew.html#tick-dateoffset-normalize-restrictions
- [x] These :class: refs don't resolve. We probably need to add offsets to `api.rst` and update the references to `tseries.offsets.Day`, etc. (#21586)
- [ ] ` tic = pd.offsets.Hour(n=2, normalize=True)` throws an ex... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21565 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21565/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21565/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21565/events | https://github.com/pandas-dev/pandas/issues/21565 | 334,266,223 | MDU6SXNzdWUzMzQyNjYyMjM= | 21,565 | crosstab gives wrong result if a categorical Series contains NaNs | {
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```python
import numpy as np
import pandas as pd
df = pd.DataFrame.from_dict( {"objcol": ("A", "B", np.nan, "C", "C", "A", "D" ) })
df["catcol"] = df.objcol.astype('category')
pd.crosstab( df.objcol, 1 )
pd.crosstab( df.catcol, 1 )
```
#### Problem description
We have this data frame... | {
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- [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
Reboot of #21201. Should be good to merge on green based on comments in the previous PR, but will leave this open for a little bit to give anyone who missed the old PR a chance to review. | {
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```python
In [2]: pd.Series(-1, index=list('abc')).loc[1]
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-2-c0de4e42231c> in <module>()
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- [x] xref #21562
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- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
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- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
This is basically a consequence of #21503 - the code path for indexing when ``key`` is a collection is now the same for multi_take and for single take.
(Next step will be to merge the other code paths too, and approach with m... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21570 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21570/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21570/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21570/events | https://github.com/pandas-dev/pandas/pull/21570 | 334,422,532 | MDExOlB1bGxSZXF1ZXN0MTk2Mzk4NDEz | 21,570 | DOC: Fixing spaces around backticks, and linting | {
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So can I would like to have something like:
`df = pd.DataFrame.<name space>.<static method>(**kwargs)`
Where the staticmethod would do a task like importing data specific to the `namespace domai... | {
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Add new test case when to_csv argument is sys.stdout | {
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```python
import pandas as pd
set1 = ['a', 'b', 'c']
set2 = ['1', '2', '3']
set3 = ['test']
tuple_index = [(s1, s2) for s1 in set1 for s2 in set2]
df = pd.DataFrame(index=tuple_index, columns=set3)
df.loc[('a', '1'), 'test'] = 5
print(df) # Shows a... | {
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... | 1 | 2018-06-21T14:18:36Z | 2018-06-22T20:31:23Z | null | CONTRIBUTOR | null | In https://github.com/pandas-dev/pandas/pull/19535 we're excluding data test files from the distribution, which required some changes.
The hardest tests to update were the IO ones that read in a bunch of files in `setup` and set them as attributes on `self`.
In the PR, I changed these setup / teardown methods to ... | {
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input:
```python
from datetime import datetime
import pandas as pd
import pytz
pacific = pytz.timezone("US/Pacific")
notz = datetime(2018,1,1,0,0,0,0)
withtz = datetime(2018,1,1,0,0,0,0, pacific)
notz.strftime('%Y-%m-%d %H:%M:%S')
withtz.strftime('%Y-%m-%d %H:%M:%S')
pd.to_datetime(notz)
p... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21577 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21577/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21577/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21577/events | https://github.com/pandas-dev/pandas/issues/21577 | 334,601,785 | MDU6SXNzdWUzMzQ2MDE3ODU= | 21,577 | [Windows bug?] when appending to an already-open file to_csv() treats first data row in dataframe as the header | {
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"followers_url": "https://api.github... | 10 | 2018-06-21T18:11:50Z | 2019-02-15T19:36:53Z | 2018-07-02T23:28:26Z | NONE | null | #### TL;DR version
to_csv() ignores the header row and instead treats the first line of data as the header when using a file object in write mode to:
1. write a few lines of text to the file, and then
2. use pd.to_csv() to append a dataframe to the file
This problem *does* appear on Win7, Win10, and a Mint VM whe... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21578 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21578/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21578/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21578/events | https://github.com/pandas-dev/pandas/pull/21578 | 334,633,644 | MDExOlB1bGxSZXF1ZXN0MTk2NTU3ODIz | 21,578 | BUG: Series dot product __rmatmul__ doesn't allow matrix vector multiplication | {
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- [x] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry
the new `__rmatmul__` implementation in Series seems to be missing matrix vector multiplication case as raised in the issue in question. Only inner product of two vectors was s... | {
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- [ ] tests added / passed
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
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Closes #21528.
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when ```dataframe.__rmatmul__``` is triggered, the DataFrame.dot is called. However, the error message doesn't seem to align with numpy.
```python
import numpy as np
from pandas import *
a = np.random.rand(10, 4)
b = np.random.rand(5, 3)
df = DataFram... | {
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Alright! Now that DateOffset objects are immutable (#21341), we can can start caching stuff. This was pretty much the original motivation that brought me here, so I'm pretty psyched to finally make this happen.
The motivating super-slow operation is... | {
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and pandas does not support the ols function any further. When using e.g. seaborn to make a fit it throws an error.
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https://api.github.com/repos/pandas-dev/pandas/issues/21584 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21584/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21584/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21584/events | https://github.com/pandas-dev/pandas/pull/21584 | 334,730,844 | MDExOlB1bGxSZXF1ZXN0MTk2NjI4MTM2 | 21,584 | BUG: Let IntervalIndex constructor override inferred closed | {
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"followers_url": "https://api.github... | 1 | 2018-06-22T03:18:36Z | 2018-09-24T17:22:59Z | 2018-06-27T15:29:17Z | MEMBER | null | - [X] closes #19370
- [X] tests added / passed
- [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [X] whatsnew entry
Makes `IntervalIndex` constructor behavior consistent: the `closed` parameter, if specified, takes priority over the inferred `closed`.
Comments:
- Modified the `intervals_t... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21585 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21585/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21585/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21585/events | https://github.com/pandas-dev/pandas/pull/21585 | 334,742,638 | MDExOlB1bGxSZXF1ZXN0MTk2NjM2MzY4 | 21,585 | DOC: Adding clarification on return dtype of to_numeric | {
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"followers_url": "https://api.github... | 3 | 2018-06-22T04:41:15Z | 2018-06-22T10:05:59Z | 2018-06-22T10:05:46Z | CONTRIBUTOR | null | Specifying the default return types for `to_numeric` in case of no downcast
- [x] closes #21551
- [ ] tests added / passed
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
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"followers_url": "https://api.github... | 2 | 2018-06-22T05:16:36Z | 2018-06-22T10:07:25Z | 2018-06-22T10:07:08Z | CONTRIBUTOR | null | Removing extra `` to solve rendering issues
- [x] xref #21564
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@TomAugspurger , I am not really much acquainted to :class: reference. Do tell me If I am wrong in the inference of the issue.
I gu... | {
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```python
ts = pd.DataFrame({'date': pd.date_range(start = '1/1/2017', periods = 5),
'observations': range(10, 60, 10)}).set_index('date')
```
`print(ts['2017-01-02':'2017-01-04'])`
```
observations
date ... | {
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Partially addresses #21500.
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"followers_url": "https://api.github... | 2 | 2018-06-22T06:55:14Z | 2018-06-22T10:11:26Z | 2018-06-22T10:11:21Z | CONTRIBUTOR | null | [Current documentation for `pandas.Series.str.contains()`](https://pandas.pydata.org/pandas-docs/stable/generated/pandas.Series.str.contains.html) states that the `|` acts as a regex **and** operator ("Returning ‘house’ and ‘parrot’ within same string."), while I believe it is actually an **or** operator. I've updated ... | {
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This is an easy fix to simply be more forgiveable and just try the operation:
- For object dtype, this is IMO the better way: simply let the scalar values decide if it can do those operations or not.
The scalar values (eg strings) already raise an informative error message. Eg for a series with ... | {
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Initially thought this could be a good place for #21500, but that didn't turn out to be the case. 🤷♂️ | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21592 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21592/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21592/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21592/events | https://github.com/pandas-dev/pandas/issues/21592 | 334,799,970 | MDU6SXNzdWUzMzQ3OTk5NzA= | 21,592 | DataFrame.plot returns/accepts one axis when using secondary_y | {
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... | open | false | null | [] | null | 1 | 2018-06-22T08:59:16Z | 2021-06-20T04:56:15Z | null | NONE | null | #### Code Sample
```python
z = pandas.DataFrame(numpy.random.rand(10,2), columns=['a','b'])
axes1 = z.plot(secondary_y='a')
axes2 = axes1.get_figure().get_axes()
z.plot(secondary_y='b', ax=axes2)
```
#### Problem description
```axes1``` is the left axis, instead of both the left and right axes (like ```axes... | {
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"followers_url": "https://api.github... | 0 | 2018-06-22T09:05:55Z | 2018-06-25T22:29:58Z | 2018-06-25T22:29:58Z | MEMBER | null | #### Code Sample, a copy-pastable example if possible
```python
In [2]: pd.Series(range(10), index=range(10, 20)).ix[5]
[...]
KeyError: 5
In [3]: pd.Series(range(10), index=pd.MultiIndex.from_product([range(10, 20), [1]])).loc[5]
[...]
KeyError: 'the label [5] is not in the [index]'
In [4]: pd.Series(rang... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21594 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21594/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21594/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21594/events | https://github.com/pandas-dev/pandas/pull/21594 | 334,830,699 | MDExOlB1bGxSZXF1ZXN0MTk2NzAxNDIx | 21,594 | PERF: do not check for label presence preventively | {
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"followers_url": "https://api.github... | 3 | 2018-06-22T10:37:22Z | 2018-07-08T08:22:46Z | 2018-06-25T22:29:58Z | MEMBER | null | - [x] closes #21593
- [x] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry
ASV run:
```
before after ratio
[f1ffc5fa] [0af738b0]
- 433±7μs 390±5μs 0.90 indexing.MultiIndexing.time_series_i... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21595 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21595/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21595/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21595/events | https://github.com/pandas-dev/pandas/pull/21595 | 334,895,318 | MDExOlB1bGxSZXF1ZXN0MTk2NzUxOTIy | 21,595 | TST: Add interval closed fixture to top-level conftest | {
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"followers_url": "https://api.github... | 2 | 2018-06-22T14:18:40Z | 2018-09-24T17:22:53Z | 2018-06-22T22:45:27Z | MEMBER | null | Noticed identical copies of this fixture in multiple places, so seemed reasonable to dedupe and move to the top-level `conftest.py`. I think I removed all instances of such a fixture/parametrize being used, but could have missed one. I imagine this fixture will be used in more places in the future when interval relat... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21596 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21596/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21596/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21596/events | https://github.com/pandas-dev/pandas/issues/21596 | 334,975,526 | MDU6SXNzdWUzMzQ5NzU1MjY= | 21,596 | Duplicate NaNs when using set() to a Pandas series | {
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"color": "0052cc"... | closed | false | null | [] | {
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"followers_url": "https://api.github.com/users/jorisva... | 1 | 2018-06-22T18:26:01Z | 2018-06-22T18:57:08Z | 2018-06-22T18:56:53Z | NONE | null | #### Code Sample
```python
import numpy as np
import pandas as pd
S = pd.Series([np.nan,1.5,np.nan,2,np.nan,np.nan,np.nan,1,1,2,2,2,3])
print S; print; print set(S)
```
#### Problem description
The NaNs show up multiple times in set(S), which is not a problem if
```python
S = [np.nan,1.5,np.nan,2,np.nan... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21597 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21597/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21597/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21597/events | https://github.com/pandas-dev/pandas/issues/21597 | 334,981,064 | MDU6SXNzdWUzMzQ5ODEwNjQ= | 21,597 | Support axis=None in all reductions | {
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... | 9 | 2018-06-22T18:45:21Z | 2021-06-20T04:58:28Z | null | CONTRIBUTOR | null | https://github.com/pandas-dev/pandas/pull/21486 is implementing support for `axis=None` for compatibility with NumPy 1.15's `all` / `any`.
The basic idea is to have `df.op(axis=None)` be the same as `np.op(df, axis=None)` for reductions like `sum`, `mean`, etc.
Getting there poses a backwards-compatibility challe... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21598 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21598/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21598/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21598/events | https://github.com/pandas-dev/pandas/issues/21598 | 334,984,114 | MDU6SXNzdWUzMzQ5ODQxMTQ= | 21,598 | In-place DataFrame.reindex | {
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```python
df=DataFrame([[1,2],[3,4]], index=list('cd'))
df.reindex(list('dc'), copy=False)
> 0 1
d 3 4
c 1 2
df.index
> Index(['c', 'd'], dtype='object')
```
#### Problem description
The index is not re-ordered.
#### Expected Output
... | {
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] | closed | false | null | [] | null | 36 | 2018-06-22T20:12:12Z | 2018-11-15T13:14:00Z | 2018-11-14T21:09:47Z | CONTRIBUTOR | null | Some cleanup & changes to facilitate release automation
* We will include the correct (latest on master or maintenance branch)
whatsnew directly in the index.rst toctree
* Contributors are included in the whatsnew for each version (automatically)
* Removed release.rst
* Added new releases.rst which has toctree... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21600 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21600/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21600/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21600/events | https://github.com/pandas-dev/pandas/pull/21600 | 335,029,303 | MDExOlB1bGxSZXF1ZXN0MTk2ODUyOTYy | 21,600 | TST: Refactor test_maybe_match_name and test_hash_pandas_object | {
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- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
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https://api.github.com/repos/pandas-dev/pandas/issues/21601 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21601/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21601/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21601/events | https://github.com/pandas-dev/pandas/pull/21601 | 335,052,673 | MDExOlB1bGxSZXF1ZXN0MTk2ODcwOTQ2 | 21,601 | Updating fork | {
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- [ ] tests added / passed
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry
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https://api.github.com/repos/pandas-dev/pandas/issues/21602 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21602/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21602/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21602/events | https://github.com/pandas-dev/pandas/pull/21602 | 335,052,770 | MDExOlB1bGxSZXF1ZXN0MTk2ODcxMDIx | 21,602 | TST: Use multiple instances of parametrize instead of product in tests | {
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- All instances `product` being used inside a `@pytest.mark.parametrize` have been converted to separate instances of `@pytest.mark.parametrize`
- Extracted `product` from within tests where it was straightforward
- There are still multiple instances of `product` being used within tests for looping purporses
- ... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21603 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21603/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21603/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21603/events | https://github.com/pandas-dev/pandas/issues/21603 | 335,059,965 | MDU6SXNzdWUzMzUwNTk5NjU= | 21,603 | BUG: groupby.first/last loses timezone information followup | {
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... | closed | false | null | [] | {
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```
In [2]: df = pd.DataFrame({'group': [1, 1, 2],
'category_string': pd.Series(list('abc')).astype('category'),
'datetimetz': pd.date_range('20130101', periods=3, tz='US/Eastern')})
In ... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21604 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21604/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21604/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21604/events | https://github.com/pandas-dev/pandas/pull/21604 | 335,061,487 | MDExOlB1bGxSZXF1ZXN0MTk2ODc2OTE2 | 21,604 | CI: Test against Python 3.7 | {
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"followers_url": "https://api.github.com/users/jre... | 5 | 2018-06-23T02:54:14Z | 2018-07-02T15:31:40Z | 2018-06-25T14:57:44Z | CONTRIBUTOR | null | - [x] closes #20552
- [x] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry
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https://api.github.com/repos/pandas-dev/pandas/issues/21605 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21605/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21605/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21605/events | https://github.com/pandas-dev/pandas/issues/21605 | 335,063,914 | MDU6SXNzdWUzMzUwNjM5MTQ= | 21,605 | json_normalize throws `TypeError` with list `record_path` | {
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```python
from pandas.io.json import json_normalize
json_normalize({'A': {'B': [{'X': 1, 'Y': 2}, {'X': 3, 'Y': 4}]}}, ['A', 'B'])
```
Note: change from `json_normalize({'A': {'B': [1, 2]}}, ['A', 'B'])` to distinguish from #21608
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https://api.github.com/repos/pandas-dev/pandas/issues/21606 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21606/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21606/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21606/events | https://github.com/pandas-dev/pandas/pull/21606 | 335,066,386 | MDExOlB1bGxSZXF1ZXN0MTk2ODgwMjY5 | 21,606 | More speedups for Period comparisons | {
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"followers_url": "https://api.github... | 2 | 2018-06-23T04:09:00Z | 2018-07-01T01:27:32Z | 2018-06-26T22:27:30Z | MEMBER | null | Following #21582, the biggest avoidable overheads in Period comparisons are in a) `isinstance` calls that can be short-circuited and b) `__ne__` call overhead. This PR moves `__eq__` and `__ne__` to the cython file, removing the `__ne__` overhead, and changes an `isinstance` check to a try/except.
Using the same pr... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21607 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21607/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21607/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21607/events | https://github.com/pandas-dev/pandas/pull/21607 | 335,066,496 | MDExOlB1bGxSZXF1ZXN0MTk2ODgwMzUw | 21,607 | BUG: Fix `json_normalize` when calling with list `record_path` (#21605) | {
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- [x] closes #21605
- [x] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry
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https://api.github.com/repos/pandas-dev/pandas/issues/21608 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21608/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21608/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21608/events | https://github.com/pandas-dev/pandas/issues/21608 | 335,086,132 | MDU6SXNzdWUzMzUwODYxMzI= | 21,608 | json_normalize throws `AttributeError` when calling with array of values | {
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xref #21605
```python
from pandas.io.json import json_normalize
json_normalize([1, 2])
```
#### Problem description
The above code throws `AttributeError`:
```
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\P... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21609 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21609/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21609/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21609/events | https://github.com/pandas-dev/pandas/issues/21609 | 335,087,483 | MDU6SXNzdWUzMzUwODc0ODM= | 21,609 | df.groupby(.).plot.scatter() creates a spurious initial plot | {
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"id": ... | closed | false | null | [] | null | 5 | 2018-06-23T10:09:22Z | 2019-08-10T14:31:16Z | 2019-08-10T14:31:16Z | MEMBER | null | #### Code Sample, a copy-pastable example if possible
```python
df = pd.DataFrame([[1, 2], [3, 4], [5, 6], [7, 8]], columns=['x', 'y'])
df['cat'] = [1, 1, 1, 1]
df.groupby('cat').plot.scatter(x='x', y='y')
```
#### Problem description
The above creates 2 plots rather than one (notice there is only one cate... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21610 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21610/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21610/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21610/events | https://github.com/pandas-dev/pandas/issues/21610 | 335,097,846 | MDU6SXNzdWUzMzUwOTc4NDY= | 21,610 | dtype changed when DataFrame add DateOffset | {
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"closed_at": "2019-01-26T00:51:26Z",
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"created_at": "2018-03-29T12:00:12Z",
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"followers_url": "https://api.github... | 3 | 2018-06-23T12:45:42Z | 2018-08-14T10:49:11Z | 2018-08-14T10:49:11Z | CONTRIBUTOR | null | #### Code Sample, a copy-pastable example if possible
```python
pd.DataFrame([pd.to_datetime('2018')]).dtypes
# 0 datetime64[ns]
# dtype: object
(pd.DataFrame([pd.to_datetime('2018')]) + pd.DateOffset(years=1)).dtypes
# 0 object
# dtype: object
```
#### Problem description
`Timestamp` + `DateOffset` =... | {
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https://api.github.com/repos/pandas-dev/pandas/issues/21611 | https://api.github.com/repos/pandas-dev/pandas | https://api.github.com/repos/pandas-dev/pandas/issues/21611/labels{/name} | https://api.github.com/repos/pandas-dev/pandas/issues/21611/comments | https://api.github.com/repos/pandas-dev/pandas/issues/21611/events | https://github.com/pandas-dev/pandas/pull/21611 | 335,101,216 | MDExOlB1bGxSZXF1ZXN0MTk2OTAyNDQ1 | 21,611 | BUG: Fix json_normalize throwing AttributeError (#21608) | {
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"description": "read_jso... | closed | false | null | [] | null | 3 | 2018-06-23T13:36:27Z | 2018-10-11T01:52:56Z | 2018-10-11T01:52:56Z | CONTRIBUTOR | null | This PR fixes the bug in `json_normalize` that causes it to throw `AttributeError` when flattening an array of values.
- [ ] closes #21608
- [x] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry
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