Methods and comments for strings in Python

First, put it here: easy to query when used. It's the equivalent of your own database.Capitalize ()Change the first character of a string to uppercaseCasefold ()Change all characters of the entire string to lowercaseCenter (width)Centers the string

Super-Practical Python date processing notes

Start from a string>>>time_str= ' 2008-08-08 08:08:08 ' 1.1. Convert to struct_time form of time   >>struct = Ime.strptime (time_str, '%y-%m-%d%h:%m:%s ') time.struct_time (tm_year=2008, tm_mon=8, Tm_mday=8, Tm_hour=8, Tm_min=8, Tm_sec=8,

Use Traceback to track exceptions in Python

test1.py, when the denominator is 0, the calling system exits#!/usr/bin/pythonimport Sysdef Division (a=1, b=1): if b==0: print ' b eq 0 ' sys.exit (1) else: Return A/btest2.py, use try: Except catches the exception,

Two years ' reflection on Python learning and development

Background introduction PYQT Client Scenarios C and Python mixed programming scenarios Pure Python server solution Due to the lack of familiarity with server development, the development and

Two months of learning python nonsense

Dew is a hobby of gardening testers, familiar with Python, reducing a lot of repetitive work. Pull it off. This two-month study concludes:BasicGrammar, data structure and so on the manual is enough, the use of the time will not be checked again, I

Python socketpool: Universal Connection Pool

Brief introductionIn software development often to manage a variety of "connection" resources, usually we will use the corresponding connection pool to manage, such as MySQL database connection can be managed by the pool in SQLAlchemy, thrift

Python combined with NC.exe for analog login & bulk Form filling

1. Job RequirementsThere are a number of matters, each of which is divided into: name, type. Time and so on, you need to input each item into the Web page and submit it individually.If you use human flesh, the process is to log in to the site

Python Leetcode Practice

Preface:leetcode Practice https://leetcode.com/problemset/algorithms/question: 1. TheSum of theGiven an array of integers, find the numbers such that they add up to a specific target number.The function twosum should return indices of the numbers

Python Virtual Environment: virtualenv

(Experience better reading effects, pokehere)VirtualenvVirtualenv is used to create a stand-alone Python environment where multiple python is independent from each other and can:1. Install the new kit without permission2. Different applications can

Python Statistics disk usage

#coding: Utf-8Import OS;def sortlist (item):return item[1];def readsize (fileName):return float (os.path.getsize (fileName));def writeall (path):L = []Loger = open ("Test.log", "w");writer = open ("Path.txt", "w");Reader = open ("Path.txt",

Writing Python with EditPlus

Syntax highlighting and auto-completion:Http://www.editplus.com/files/pythonfiles.zipChoose the menu Bar--Tools--Configure user Tools--Settings & syntaxFileName extension: pyGrammar file: Python_extd.stxAuto-Complete: PYTHON.ACPTo configure the

Python BeautifulSoup sets the page encoding method, pythonsoup

Python BeautifulSoup sets the page encoding method, pythonsoup Various encoding errors occur when you use BeautifulSoup to capture pages.You can solve the problem by specifying the character encoding in beautifulsoup.Copy codeThe Code is as follows:

How to display the download progress when downloading a python File,

How to display the download progress when downloading a python File, This example describes how to display the download progress when downloading python files. Share it with you for your reference. The specific analysis is as follows: Put this

Analyze the parameter transfer process of method in Python using an instance, pythonmethod

Analyze the parameter transfer process of method in Python using an instance, pythonmethod What is method? Function is a piece of code that can be called by name. We can pass parameters to get the return value. All parameters are passed

10 methods to check the running time, CPU usage, and memory usage of Python programs

10 methods to check the running time, CPU usage, and memory usage of Python programs It takes a long time to run a complex Python program. In this case, you may want to improve the execution efficiency of the program. But what should we do? First,

Simple Python Getting Started Guide and simple python getting started

Simple Python Getting Started Guide and simple python getting started First test knife If you want to learn the Python language, you cannot find a brief and comprehensive getting started tutorial. This tutorial will take you to the door of Python in

Six Methods to Improve Python program running efficiency, python program running

Six Methods to Improve Python program running efficiency, python program running Python is a cool language, because you can use a small amount of code to do a lot of things in a short time. In addition, it can easily support multiple tasks, such as

Optimize Python code so that it can speed up searching within the scope.

Optimize Python code so that it can speed up searching within the scope. I will demonstrate how micro optimization improves the execution speed of python code by 5%. 5%! At the same time, it will also anger anyone who maintains your code. But in

Using Python to draw MySQL Data graphs for data visualization, pythonmysql

Using Python to draw MySQL Data graphs for data visualization, pythonmysql All the Python code in this tutorial can be obtained from IPython notebook on the Internet. Consider using Plotly in the company? Take a look at the on-premises Enterprise

Python implements 2048 games and python2048 games

Python implements 2048 games and python2048 games Python 2048. Modified the code of a user to solve two bugs in the original user version: 1. The original game is eliminated only once each time, rather than recursively. For example, if [2, 2, 2] is

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