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Versión en video (4:28 min):
Fund.Prog con Python 2020
05 - Condiciones (2: elif)
Vamos a profundizar un poco en las condiciones.
Vamos a hacerlo conociendo la orden "elif", que hará que las condiciones largas, encadenadas, resulten más legibles.
Al igual que en las entregas anteriores, nos vamos a nuestro editor onlin... |
Available with Spatial Analyst license.
Summary
Calculates the specified geometry measure (area, perimeter, thickness, or the characteristics of ellipse) for each zone in a dataset.
Illustration
Usage
A zone is defined as all areas in the input that have the same value. The areas do not have to be contiguous. Both rast... |
By Xiliu, Alibaba Cloud Technical Expert
You may have noticed a new usage of Alibaba Cloud's serverless series, which is not that obvious, during your first use. Compared with the traditional server-based approach, the serverless service platform enables rapid scale-out of your apps and more efficient parallel processi... |
Versión en video (3:48 min):
Fund.Prog con Python 2020
07 - Bucles (2: for)
Vamos a tener nuestro primer contacto con un segundo tipo de bucles, que es lo que llamaremos los bucles "for".
Los bucles "for" tienen básicamente dos usos:
Por una parte, para hacer contadores.
Por otra parte, para recorrer listas.
Vamos a em... |
New Beta for Pythonista 3.3
There's now a public beta for the upcoming Pythonista 3.3. If you signed up for a Pythonista 3 beta previously, you should have received a notification from TestFlight. If you're not a beta tester yet, but would be interested in testing, you can just use this link to sign up (I no longer nee... |
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æ°æ®æ¯éèéååæçéè¦åºç¡ï¼å æ¬è¡ç¥¨åå²äº¤ææ°æ®ãä¸å¸å ¬å¸åºæ¬é¢æ°æ®ãå®è§åè¡ä¸æ°æ®çãéçä¿¡æ¯æµéçæ¥çè¨èï¼å¦ä¼è·åãæ¥è¯¢åå å·¥æ°æ®ä¿¡æ¯åå¾è¶æ¥è¶éè¦ã... |
Versión en video (13:48 min):
Fund.Prog con Python 2020
08 - Contacto con los arrays o matrices (y las listas)
Vamos a tener un primer contacto breve con las matrices y en el caso de Python hablaremos también de listas, que es un concepto relativamente relacionado, no tanto en otros lenguajes, pero sí en el caso de Pyt... |
Versión en video (8:14 min):
Fund.Prog con Python 2020
09 - Contacto con las cadenas de texto
Esta va a ser nuestra toma de contacto con las cadenas de texto usando Python.
Las ideas básicas de las cadenas ya las conoces:
Podíamos darle valores con cosas como: "nombre =" y, entre comillas simples o entre comillas doble... |
blob: 392af40e08bca818f045ab8ad44a550c016c3b6a (
plain
)
import logging
import os
import subprocess
import sys
import fable
def _jt_path():
return os.environ['JT_PATH']
def _runcmd(ctx, argv):
logging.debug('Executing %r', argv)
p = subprocess.Popen(
argv, stdout=subprocess.PIPE, stderr=subprocess.P... |
New Beta for Pythonista 3.3
There's now a public beta for the upcoming Pythonista 3.3. If you signed up for a Pythonista 3 beta previously, you should have received a notification from TestFlight. If you're not a beta tester yet, but would be interested in testing, you can just use this link to sign up (I no longer nee... |
given the simplest HTTP server, how do I get post variables in a BaseHTTPRequestHandler?
from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
class Handler(BaseHTTPRequestHandler):
def do_POST(self):
# post variables?!
server = HTTPServer(('', 4444), Handler)
server.serve_forever()
# test with:
# curl -d "para... |
When I try to open FC, it shows the loading screen and then crashes.
If I run it through the terminal I get the following:
Code: Select all
Program received signal SIGSEGV, Segmentation fault.
#0 /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20) [0x7f3060b73f20]
#1 /lib/x86_64-linux-gnu/libc.so.6(+0x18ad6a) [0x7f3060cbfd6a]
... |
Problem Statement
In this notebook we are dealing with one of the most popular classification problems - “Predicting survival rate of Titanic passengers based on available characteristics”.
This problem is hosted as a Kaggle competition and can be accessed by https://www.kaggle.com/c/titanic.
In short, the goal is to c... |
I have a simple model. models.py
class Content(models.Model):
title = models.CharField(max_length = 300, unique = True)
category = models.CharField(max_length = 50)
def __str__(self):
return self.title
then I'm scrapping the data from some sources and want to store in this table.
toi_r = requests.get("... |
blob: 13d6f369e7346da8ef82a25806c0cc7447c1f259 (
plain
)
# -*- coding: utf-8 -*-
#Copyright (c) 2010,11 Walter Bender
#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, includi... |
前幾天有網路上的朋友詢問有沒有辦法將 p4 跟 ovs 混合起來使用，就想說來測試看看好了，畢竟之前有使用過將 docker container 連接上 ovs 的經驗，想說應該不會太困難。
結果僅使用一支簡單的 mininet script 就可以完成了：
#!/usr/bin/python
# This file is fork from p4factory/mininet/swl_l2.py
##############################################################################
# Topology with two switches and two hos... |
I am trying to convert a 2d array with really specific property to a dictionary. The property is that the value inside a matrix, corresponds to possibility to move in direction (upwards, downwards, left, right).
I have been trying to flatten it and then work on the new array, but indexing gets really nested. I have 2 q... |
Recently I have had the pleasure of migrating a WordPress website which resulted in a peculiar problem - sending email functionality on the new server no longer worked. After some digging around I found out that PHP has this mail function which uses the sendmail program to actually send your email.
Well after messing a... |
In my Home Assistant setup, I created an SMTP notification that would email my phone’s SMS gateway when certain conditions were met. Except it didn’t work.
When monitoring the log file, I found the following when the condition was supposed to trigger:
WARNING (MainThread) [homeassistant.core] Unable to find service not... |
I'm a Mechatronics engineer | Pro Python Developer | AI Enthusiast
Today you’re going to learn about python list comprehension, a very powerful feature of python to use when creating a python List based on certain constraints.
Imagine you want to create a list of cubics of numbers ranging from 1 to 100, Generating the ... |
背景
最近公司项目需要使用阿里云的oss存储来线上实时存储图片文件。因此调研开发了python版本的阿里云oss SDK。这里我们介绍一下oss以及python oss的常用方法。
oss介绍
阿里云对象存储OSS（Object Storage Service）是阿里云提供的海量、安全、低成本、高持久的云存储服务。其数据设计持久性不低于99.9999999999%（12个9），服务可用性（或业务连续性）不低于99.995%。
OSS具有与平台无关的RESTful API接口，您可以在任何应用、任何时间、任何地点存储和访问任意类型的数据。
您可以使用阿里云提供的API、SDK接口或者OSS迁移工具轻松地将海量数据移入或移出阿里云OSS... |
blob: 9c8bdff3c98afce7be2f9adfff688776355d1488 (
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# Copyright (C) 2009, Tutorius.org
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your optio... |
ExtUtils::MakeMaker - Create a module Makefile
use ExtUtils::MakeMaker;
WriteMakefile(
NAME => "Foo::Bar",
VERSION_FROM => "lib/Foo/Bar.pm",
);
This utility is designed to write a Makefile for an extension module from a Makefile.PL. It is based on the Makefile.SH model provided by Andy Doughe... |
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
import os
import re
from collections import defaultdict
import webtools as wt
threadpath = "./threads/"
def load_thread(th):
th = int(th)
thp = str(threadpath + str(th)... |
Hi, I had to do a fresh install recently, but I can't get gdm/gnome to work. When I try to to start gdm it seems to start just fine, but it just shows a black screen with a clock cursor. I have googled the issue, but the only solution I've found is to change the password expiry for the gdm account. That didn't do anyth... |
ExtUtils::MakeMaker - Create a module Makefile
use ExtUtils::MakeMaker;
WriteMakefile(
NAME => "Foo::Bar",
VERSION_FROM => "lib/Foo/Bar.pm",
);
This utility is designed to write a Makefile for an extension module from a Makefile.PL. It is based on the Makefile.SH model provided by Andy Doughe... |
Segregating the Structure and Looking for Orphans
We have progressed through these build portions of the Cooking with Python and KBpedia series to capture the bulk of the structure in KBpedia by defining its classes, properties, and the hierarchical relationships among them. We have, so to speak, tossed all of the comp... |
Developing Convex Optimization Algorithms in Dask parallel math is fun
Summary
We build distributed optimization algorithms with Dask. We show both simple examples and also benchmarks from a nascent dask-glm library for generalized linear models. We also talk about the experience of learning Dask to do this kind of wor... |
I have an NTP configured through out our in a hierarchy. 100% reliable with regards to providing time for Cisco devices. At one of our sites we allow cameras, servers, and workstations to utilize our Catalyst 4500s as their time source. Access layer switches have no problems drawing time from the 4500s. The cameras and... |
I am having a problem using a statically compiled QEMU arm version. I am trying to debug an application from an embedded device. Everything seems to work fine except breakpoints on other threads. I am using IDAs remote gdb function to debug. Instead of breaking here
Edit: The problem doesn't seem to be IDA itself.I was... |
```(aka backtick or grave accent) in a single line before and after the block. See: http://commonmark.org/help/
wrong price when cheat-on-open and resampledata at the same time
I need allin strategy, so i use cheat-on-open, and resample minutes/1 to minutes/60 data, when creating orders, it seems order_target_value / o... |
I am getting some odd behavior (possibly on my end) from two aspects of this script. First, the rg.Curve.PointAt method should be returning two Point3d objects which I am using in the 'Brep.CreateFromLoft' method. (This working just fine in Rhino Python btw). Furthermore, currently, only the ‘Point3d.UnSet’ option is w... |
Dask Series에 적용된 함수에서 여러 값을 어떻게 반환합니까?dask.Series.apply의 각 반복에서 시리즈를 반환하려고합니다. 그리고 최종 결과는 dask.DataFrame입니다.
업데이트 :메타/스키마를 올바르게 지정하지 않은 것 같습니다. 올바르게 어떻게해야합니까?이제 메타 인수를 삭제하면 작동합니다. 그러나 경고가 발생합니다. "정확하게"dask를 사용하고 싶습니다.
import dask.dataframe as dd
import pandas as pd
import numpy as np
from sklearn import datasets
iris =... |
Struggling with structure of classes and functions
Sat Nov 24, 2018 5:58 pm
I'm putting together some bits for occupancy detection. This is my first Python project and it's turning out a lot more involved than I'm probably capable of. This is the code I have:
This is my code:
Code: Select all
from bluepy.btle import Sc... |
View source on GitHub
Provides a scope in which Pruned layers and models can be deserialized.
tfmot.sparsity.keras.prune_scope()
Used in the notebooks
Used in the guide
For TF 2.X: this is not needed for SavedModel or TF checkpoints, which are the recommended serialization formats.
For TF 1.X: if a tf.keras h5 model o... |
StackOverflow示例，使用scipy的svd进行PCA：
#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''
ref:
http://stackoverflow.com/questions/1730600/principal-
component-analysis-in-python
'''
import numpy as np
from scipy.linalg import svd
from scipy.misc import lena
import matplotlib.pyplot as plt
# the underlying sign... |
Копирование файлов в Питоне
Копирование файлов в Питоне
LitkevichВ Yuriy
16.5.2011, 10:30
Сообщение #1
разработчик Р РРђ
Группа: Сомодератор
Сообщений: 9666
Регистрация: 9.1.2008
�з: Тюмень
Пользова... |
“Classics” is a great product, it shows us iPhone developers what an elegant ebook reader can be, so I bought it almost instantly after it’s released. I’ve been chatting with my friends about this app for a while, now I’d like to give a more closer examination to it from the perspective of a typographer and a programme... |
I'm very new to Python, Pandas and programming overall, sorry in if this is a too stupid question.
Question is quite similar to this one (I've used this for my code) but i want to take it one step further and to save all separated csv's to each individual folder with the same name.
What do i have right now:
# this one ... |
I'm a Mechatronics engineer | Pro Python Developer | AI Enthusiast
Hi guys,
In this article, I'm going to share with you how to build a digital clock using Python programming in just a few lines of code using the Tkinter and Time module.
But if you're running Linux OS most of the time pre installed python interpreter d... |
A list is a way to store data. In languages like C, php we saw they use a special type of variable called an array. In python we call them lists. Both of lists and arrays do the same. In following program we make a list with the name "Langs". Lists use indexed method to extract data.
[email protected]:~/programming$ ca... |
I just bought the Crazyflie 2.0 drone. This is my first drone, and it is my first time programming a drone.
My first goal is simple: Make the drone hover in place stably for 10 seconds.
I found a simple example script that turns up the thrust and then lands the drone. I modified this to 1) extend the time to 10 seconds... |
Summary
Adds file attachments to the records of a geodatabase feature class or table. The attachments are stored internally in the geodatabase in a separate attachment table that maintains linkage to the target dataset. Attachments are added to the target dataset using a match table that dictates for each input record ... |
A set of tools for simplifying reading and writing of single values to/from Redis.
Project description
PyRedisEasyIO
A project to simplify reading/writing single objects from/to redis
Description
Redis is a great way to share data between applications - or processes in an application. However, in its raw form, the appl... |
I'm dealing with some data that is restricted to unmarried women with two or more children to find out if a tax policy affects their annual hours of work.
But, pretty much different from my expectation, when I include a time variable (in this case, h_year (it's a list of 6 years: 2008, 2009, 2010, 2012, 2013, 2014), th... |
TensorFlow 1 version View source on GitHub
Checkpoints input pipeline state every N steps or seconds.
Inherits From: SessionRunHook
tf.data.experimental.CheckpointInputPipelineHook( estimator, external_state_policy='fail')
This hook saves the state of the iterators in the Graph so that whentraining is resumed the input... |
NewerOlder
1
project('jami-daemon', ['c', 'cpp'],
2
3
4
default_options: ['cpp_std=gnu++17', 'buildtype=debugoptimized'],
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
meson_version:'>= 0.54'
)
modpkgconfig = import('pkgconfig')
modcmake = import('cmake')
#########################... |
Artikel ini ialah terjemahan "Machine Learning is Fun part 1" oleh Adam Geitgey.
Kalau terjemah secara langsung, tajuk artikel sepatutnya berbunyi "Seronoknya Pembelajaran Mesin". Tapi sebab SEO dan perkataan pembelajaran mesin tak digunakan secara meluas dalam bahasa Malaysia, saya ubah tajuk dan guna perkataan Kepint... |
CTA回测模块，设置好商品信息，点击下载数据，报错：数据下载失败，无法获取IF88.CFFEX的历史数据，这是什么原因啊，
怎么样才能有数据下载下来？
CTA回测模块，设置好商品信息，点击下载数据，报错：数据下载失败，无法获取IF88.CFFEX的历史数据，这是什么原因啊，
怎么样才能有数据下载下来？
在cmd上有什么报错信息吗
cmd没有任何信息。
CTA回测模块，设置好商品信息，点击下载数据，显示信息：数据下载失败，无法获取IF88.CFFEX的历史数据，这个是一定要通过RQdata来关联数据源吗？
给一个解决方案试试，rqdata.py这个文件如下修改：
def init(self, username="", password... |
I’m building an integration between two services and wanted to know what was being sent. This simple flask app allowed me to check the payload. Run this, and then open a ngrok tunnel connected to port 5000. You’ll have a live incoming webhook app!
First, let’s create a virtual environment and install Flask. After CDing... |
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
import cherrypy
import gnupg
import hashlib
import json
import os
import queue
import sqlalchemy
import traceback
from datetime import datetime
from pydpkg import Dpkg
from sql... |
So I was in Barcelona for a Conference, and it was really great. There was a talk and the presenter tried to explain that with 30 exponential steps you could go around the world 30 times.
And I was thinking… is this actually correct? And the next Python script was born!
My honest answer is I don’t know!
Normal vs Expon... |
Kood: Vali kõik
General Error
SQL ERROR [ mysqli ]
Unknown column 'users.yahoo' in 'field list' [1054]
SQL
SELECT users.uid, users.website, users.yahoo, users.aim, users.icq, users.skype, userfields.fid1 FROM mybb_users users LEFT JOIN mybb_userfields AS userfields ON (users.uid = userfields.ufid) ORDER BY users.uid LI... |
หากฉันเข้าใจดีว่าโหนดเอาต์พุตเดี่ยวของคุณจะเป็นสถานะถัดไปของสแควร์ที่อยู่ตรงกลาง คุณไม่จำเป็นต้องกังวลเกี่ยวกับจำนวนโหนดในเลเยอร์ที่ซ่อนอยู่ในขณะที่คุณมีทรัพยากรเพียงพอที่จะฝึกฝนโมเดล ปัญหานี้ง่ายมากในการเรียนรู้สำหรับโครงข่ายประสาทเทียมดังนั้นจึงไม่ต้องกังวลเรื่องขนาด
คุณต้องทำการฝึกอบรมแบบมีผู้ควบคุมซึ่งหมายความว่าคุ... |
Hi guys recently i have been testing out raspberry pi and i seems to have a problem reading data from ultrasonic sensor i followed this guide http://www.raspberrypi-spy.co.uk/2012/1 ... on-part-1/ but cant seems to get a value. When i run the python script it will just hang there and no respond to anything. Can anybody... |
Python
2 - Variables y operaciones aritméticas
Casi cualquier programa "real" partirá de datos que no estén prefijados. Esos datos podrán ser introducidos por el usuario, leídos de un fichero o de una base de datos, descargados de Internet...
Nosotros vamos a empezar por pedir datos al usuario. Esos datos los guardarem... |
Kood: Vali kõik
General Error
SQL ERROR [ mysqli ]
Unknown column 'users.yahoo' in 'field list' [1054]
SQL
SELECT users.uid, users.website, users.yahoo, users.aim, users.icq, users.skype, userfields.fid1 FROM mybb_users users LEFT JOIN mybb_userfields AS userfields ON (users.uid = userfields.ufid) ORDER BY users.uid LI... |
NAME
VERSION
SYNOPSIS
DESCRIPTION
GUIDELINES FOR WRITING A SORT::SUB::* MODULE
FUNCTIONS
HOMEPAGE
SOURCE
BUGS
SEE ALSO
AUTHOR
COPYRIGHT AND LICENSE
NAME
Sort::Sub - Collection of sort subroutines
VERSION
This document describes version 0.120 of Sort::Sub (from Perl distribution Sort-Sub), released on 2020-05-25.
SYNOPS... |
Bounty: 200
I’ve got Django Channels 2.1.2 set up in my Django app by following a tutorial and now need to set up a notification system for new messages. I want to do this in the simplest way possible (ideally using native Django features if possible…etc Django templating).
I’ve looked around the internet but there isn... |
Python
3 - Comprobación de condiciones
En casi cualquier secuencia de instrucciones para un ordenador, será vital poder comprobar si se cumple alguna condición. Una primera forma básica de comprobar condiciones es con la orden "if" ("si" condicional). Su uso básico sería
primerNumero = int( input ( "Dime un numero: " )... |
Kood: Vali kõik
General Error
SQL ERROR [ mysqli ]
Unknown column 'users.yahoo' in 'field list' [1054]
SQL
SELECT users.uid, users.website, users.yahoo, users.aim, users.icq, users.skype, userfields.fid1 FROM mybb_users users LEFT JOIN mybb_userfields AS userfields ON (users.uid = userfields.ufid) ORDER BY users.uid LI... |
Noob question about lists in sum()
Hi there, I have a (presumably) very easy question:
var('k')
sum(1/k, k, 1, 5)
works, but
dings = [1 , 2, 3, 4, 5]
length = len(dings)
sum(1/dings[k], k, 0, length - 1)
does not.
Error Message:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "_sage_in... |
This post is my practice on getting the most frequent words in a string in Python. Here is the code
#import the necessary packages
from collections import Counter
import pandas as pd
#open the text file. Here in this case, it is named "text"
with open('text.txt') as fin:
counter = Counter(fin.read().strip().split(... |
0x00 几个编码函数
* ord(x)
将字符转换为10进制整数(0~255之间) #ord('a')==>97
* chr(x)
将10进制整数(0~255之间)转换为字符 #chr(97)==>'a'，chr(0x61)==>'a'
* b2a_hex(x)
将字符转换为对应的16进制 #import binascii;binascii.b2a_hex('a')==>'61'
* a2b_hex(x)
将16进制转换为对应的字符 #import binascii;binascii.a2b_hex('61')==>'a'
* hex(x)
将10进制整数转换为对应的16... |
Python
4 - Condiciones repetitivas
No siempre habrá que comprobar condiciones una única vez. Es muy frecuente que haya que hacerlo de forma repetitiva. Por ejemplo, "pedir una contraseña al usuario hasta que sea la correcta", o aún más cercano al mundo real, "pedir una contraseña al usuario hasta que sea la correcta o ... |
Kood: Vali kõik
General Error
SQL ERROR [ mysqli ]
Unknown column 'users.yahoo' in 'field list' [1054]
SQL
SELECT users.uid, users.website, users.yahoo, users.aim, users.icq, users.skype, userfields.fid1 FROM mybb_users users LEFT JOIN mybb_userfields AS userfields ON (users.uid = userfields.ufid) ORDER BY users.uid LI... |
Python
5 - Matrices, listas y cadenas de texto
5.1. Matrices y listas
Cuando necesitamos manejar muchos datos, generalmente hay soluciones más efectivas que tener muchas variables. Por ejemplo, si hay que guardar 100 números, suele ser más eficiente almacenar esos 100 datos "juntos", formando una "matriz", en vez de us... |
Kood: Vali kõik
General Error
SQL ERROR [ mysqli ]
Unknown column 'users.yahoo' in 'field list' [1054]
SQL
SELECT users.uid, users.website, users.yahoo, users.aim, users.icq, users.skype, userfields.fid1 FROM mybb_users users LEFT JOIN mybb_userfields AS userfields ON (users.uid = userfields.ufid) ORDER BY users.uid LI... |
blob: 8607d2cd8e0ab726039d02202e067c158ae75ff4 (
plain
)
#######################################################################
# Top-level SConstruct
#
# For example, invoke scons as
#
# scons build=debug llvm=yes machine=x86
#
# to set configuration variables. Or you can write those options to a file
# named conf... |
Beta-RecSys
Beta-RecSys an open source project for Building, Evaluating and Tuning Automated Recommender Systems. Beta-RecSys aims to provide a practical data toolkit for building end-to-end recommendation systems in a standardized way. It provided means for dataset preparation and splitting using common strategies, a ... |
Python
6 - Creación de funciones
En muchos casos, nos encontraremos con tareas que tenemos que repetir varias veces en distintos puntos de nuestro programa. Si tecleamos varias veces el mismo fragmento de programa no sólo tardaremos más en escribir: además el programa final resultará menos legible, y será más también s... |
Сводка
Создает метод преобразования для конвертации данных между двумя географическими системами координат или датумами. Выходные данные этого инструмента могут использоваться как метод преобразования для любого инструмента с параметром, которому требуется географическое преобразование.
Использование
Все файлы пользова... |
I am getting the following error when trying to call(by value) a function named make_dashboard
Function call:
make_dashboard(x=1948, gdp_change=10, unemployment=3.75, title=title, file_name=file_name)
*Error:* AttributeError Traceback (most recent call last)
<ipython-input-42-8f2b4601acb0> i... |
Versión en video (3:59 min):
Fund.Prog con Python 2020
13 - Contacto con las excepciones
Vamos a aprovechar que conocemos lo básico del manejo de ficheros de texto para introducir un conceptomuy habitual en lenguajes modernos, que es el control de errores utilizando excepciones.
Para entender qué son las excepciones, v... |
kwarg - python function argument
Python関数の引数の最大数はいくらですか? (4)
Python関数は最大で256個の引数を持つことができるというのは、やや一般的な知識です。 私が知りたいことは、以下のように*argsと**kwargsが展開されているときに、この制限が適用されるかどうかです。
items = [1,2,3,4,5,6]
def do_something(*items):
pass
仮に、256個を超えるアイテムが*argsや**kwargsセットとして展開されるケースがあるかもしれないから**kwargs 。
** kwargsのために、私がよく覚えていれば、これは辞... |
Tencent Cloud API authenticates each access request, i.e. each request needs to include authentication information (Signature) in the common parameters to verify the identity of the requester.
The Signature is generated by the security credentials which include SecretId and SecretKey. If you don't have the security cre... |
誤差拡散ディザリング
任意の閾値を定め、各画素と比較して、閾値より小さければ0を出力し、大きければ255を出力する。
ただし、次の画素は本来の画素から出力する値(0 or 255)を差し引いて誤差を求め、再度その誤差と閾値を比べます。
グレースケールを例にとると、単純な閾値との比較ではでは一律、相対的に暗い部分(0に近い)が黒く塗りつぶされ、明るい部分(256に近い)が白くなってしまいますが、誤差拡散ディザリングの場合は、元の画素に求めた誤差を加算した上で閾値との比較をする事でそれを防ぐ事ができるようになります。
基本的な使い方
サンプルでは閾値を128に設定しています。
( 画素の値 + 誤差 )が128より小さい場合
元の画素 ... |
Devel::Peek - A data debugging tool for the XS programmer
use Devel::Peek;
Dump( $a );
Dump( $a, 5 );
DumpArray( 5, $a, $b, ... );
mstat "Point 5";
use Devel::Peek ':opd=st';
Devel::Peek contains functions which allows raw Perl datatypes to be manipulated from a Perl script. This is used by those who do XS programming... |
Devel::Peek - A data debugging tool for the XS programmer
use Devel::Peek;
Dump( $a );
Dump( $a, 5 );
Dump( @a );
Dump( %h );
DumpArray( 5, $a, $b, ... );
mstat "Point 5";
use Devel::Peek ':opd=st';
Devel::Peek contains functions which allows raw Perl datatypes to be manipulated from a Perl script. This is used by tho... |
blob: 0d1d9af63d02358006b900c5eed776465f289d58 (
plain
)
# Copyright (C) 2009, Tutorius.org
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your optio... |
matplotlib縺ｧ遏｢蜊ｰ繧呈緒縺上→縺膏yplot.annotate繧剃ｽｿ逕ｨ縺吶ｋ縲�
import matplotlib.pyplot as plt
plt.annotate("",
xy=(0.5, 0.5), xycoords='data',
xytext=(0, 0), textcoords='data',
arrowprops=dict(arrowstyle="->",
connectionstyle="arc3",
),
... |
```(aka backtick or grave accent) in a single line before and after the block. See: http://commonmark.org/help/
How to calculate Chaikin Money Flow
I'm trying to calculate Chaikin Money flow class but unable to match result with excel calculation, can someone help me here :
Money Flow Multiplier = [(Close - Low) - (Hig... |
Pythonã§ãã¡ã¤ã«ã®ãã¹ãæ±ã
2020-09-22
python
å®è¡ãã¡ã¤ã«ã®ãã¹ãåå¾ããã«ã¯__file__ã使ãããã ãããã¯ã«ã¬ã³ãã¯ã¼ãã³ã°ãã£ã¬ã¯ããªããã®ç¸å¯¾ãã¹ãè¿ã£ã¦ããã
print(__file__)
ãã¡ã¤ã«ãã¹ã®æä½ã«ã¯pathlibã¢ã¸ã¥ã¼ã«ã使ãã
åº... |
Use discount code "FREESHIP" for free economy shipping on Canadian orders over $150
M061
$11.99
The MonkMakes Relay for micro:bit is a solid-state (no moving parts) relay that allows an output of a micro:bit to turn things on and off.
A micro:bit can turn an LED on and off directly, but anything more powerful requires ... |
ExtUtils::MakeMaker - create an extension Makefile
use ExtUtils::MakeMaker;
WriteMakefile( ATTRIBUTE => VALUE [, ...] );
which is really
MM->new(\%att)->flush;
This utility is designed to write a Makefile for an extension module from a Makefile.PL. It is based on the Makefile.SH model provided by Andy Dougherty and the... |
I'm trying to implement a neural network that classifies images into one of the two discrete categories. The problem is, however, that it currently always predicts 0 for any input and I'm not really sure why.
Here's my feature extraction method:
def extract(file):
# Resize and subtract mean pixel
img = cv2.resi... |
Hi everyone
New here using python. I have a PI hooked up to a RGB led matrix, and an Adafruit RGB Matrix HAT that has the clock built in.
I am running a couple of text scripts manually by just typing the sudo ./runtext.py or runtext1.py or runtext2.py etc. that runs a different text and I run the script at certain time... |
Vue progressive image loader plugin like Medium
Vue progressive image loading plugin.
vue-image-loader
Vue progressive image loading plugin
Article here : https://www.kevindesousa.me/vue-image-loader/
Installation
$ npm install @kevindesousa/vue-image-loader
Usage
import Vue from 'vue'
import VueImageLoader from '@kev... |
デジカメで撮影した大量の写真の中から削除しても差し支えない不要な写真を機械的に検出するためこのような実験をしています。
今回は前回の実装だけでは問題となる、意図的に美しいボケを含んでいるポートレートをピンボケや手ぶれ写真として誤検出しないような実装をしていきます。また、この実装で写真に顔が含まれているけども顔部分にピントがあっていない写真も検出できるようになります。
前回は写真全体のピンボケや手ぶれ写真を検出
前回はエッジ検出によって、写真全体がピンボケや手ぶれしている写真を検出することができました。これをさらに拡張していきます。
前回の実装の問題点
前回の実装では写真全体からボケの検出をしてしまっているので、一眼レフカメラなどで撮... |
ChannelsViewModel is responsible for updating ChannelsView based on data received from StreamChatAndroidOffline library. It queries the channels during initialization and updates its state every time channels are updated.
The view model exposes LiveData object called state, which can be one of following:
LoadingNextPag... |
TensorFlow 1 version View source on GitHub
Learning rate scheduler.
Inherits From: Callback
tf.keras.callbacks.LearningRateScheduler(
schedule, verbose=0
)
Used in the notebooks
Used in the tutorials
At the beginning of every epoch, this callback gets the updated learning ratevalue from schedule function provided ... |
Dask Release 0.15.0
I’m pleased to announce the release of Dask version 0.15.0. This release contains performance and stability enhancements as well as some breaking changes. This blogpost outlines notable changes since the last release on May 5th.
As always you can conda install Dask:
conda install dask distributed
or... |
Python для начинающих
В этой статье мы поговорим о paramiko – модуле, позволяющем работать с ssh в python. Он поможет создать скрипт, который сможет соединяться с удаленным сервером (или серверами) и выполнять на нем некоторые действия.
Согласно спецификации DB-API 2.0 после создания объекта соединения необходимо созда... |
One of the first things we learn as programmers is how to print out information that we need for debugging. Unfortunately, when we print out an object we get a default representation that seems fairly useless.
class Employee():
def __init__(self, name):
self.name = name
argus = Employee("Argus Filch")
print(argus... |
fanthom
Site Admin
Posts:5334
Joined:28 Dec 2010, 02:42
Distribution:Porteus Kiosk
Location:Poland
Contact:
second that.
Wicd is more friendly for begginers than pns-tool, and almost doesn't require to know english language.
unfortuately it requires python (few extra MB).
"pns-tool is kind of lame"
damn! i always thoug... |
Dec 182018
Amazon's qid in the url is the number of seconds since January 1st, 1979. They use it to detect whether a link is freshly searched thus signaling that that keyword is searched, or if its an old qid then that keyword was not used and someone just visited the link (I probably explained that like crap, but I've... |
この前の記事で、scikit-learnのニュース記事のジャンルをロジスティック回帰で予測するというモデルを作ってみました。
今回はアプローチを変えて、トピックモデルを試してみようと思います。
どちらかというと、20newsのデータセットでもう少し何かやりたいというのが主目的で、
トピックモデルの理論的な説明については今回は省略します。
興味のあるかたへは、講談社から出ている岩田具治先生の、 トピックモデル (機械学習プロフェッショナルシリーズ)
が非常にわかりやすかったのでおすすめです。ページ数も少なめでありがたい。
(数式が多くて書くのが大変なのですがゆくゆくは時系列分析みたいにこのブログでも説明したい。)
さて、pythonで... |
对于现在的网站来说，第三方登陆可以说是一个常用的设计了，通过授权来实现诸如qq，微信，微博等第三方平台的第三方登陆。而对于Django的drf来说，也是可以很好的嵌入第三方登陆模块的。
第三方登录都是采用OAuth2.0规范来实现的，基本流程是：
1、注册相关平台的开放平台的开发者账号，从而可以新建应用来开发调试。比如说微博就是在微博开放平台；微信就是在微信开放平台，QQ就是在QQ互联。
2、注册完账号后就可以在相关平台注册应用了。注册应用会得到appkey和appsecrt，这是必要的两个参数，以qq为例：
（1）、第一步是获取Authorization Code，通过访问文档定义的接口，传递相关必要参数如appkey和appse... |
X軸を2本にする意味
前回、前々回とY軸が2本のグラフの作成方法を解説しました。
今回はX軸が2本のグラフの作成方法を解説していきます。
Y軸が2本のグラフは2つのデータ間で値が大幅に違う際に分かりやすく表示するということで利用価値が分かります。
しかしX軸が2本というのはどういう時に使われるのでしょうか？
個人的にはX軸が単なる数値であれば、2軸にしてまで表示する必要はないと思います。
しかしX軸が文字だったり、日付だったりした場合、一つの軸では表示できません。
そんな時に使うのかなと思います。
ということで試していきましょう。
X軸が2本のグラフの作成方法
まずはデータを準備します。
先ほど少しお話しした通り、X軸が2本の場合は... |
Let's learn Aardvark
Welcome to Aardvark, the language that has entranced programmers by its simplicity and amazingness for the last few days.
My goal is to by the end of this lesson have taught you the basics of the Aardvark language and get you on a course to become an amazing Aardvark developer.
In programming, you ... |
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