A summary of Python coding problems

1. String objects have two formats: STR and Unicode, where Unicode is standard, and STR is the specific encoding implementation (UTF-8,GBK, etc.) Such as: A= "Hello"; #str B=u "Hello"; #unicode 2. Encode converts Unicode to other format

Python enters an integer n, outputting all the smallest factors of n

mul

Title: Enter an integer n, output all the smallest factors of n, also called the element factor. Where any number greater than 1 can be written as a product of several primes, we call these primes the number factor. For example: Input: 120

Python uses HTML pages to view string differences

1. Compared to two string differences.# VI diff.py#!/usr/bin/env python Import Difflib Text1 = "' Text1:This is Mudule provides classes and fuctions for comparing sequences.including HTML and context and unified diffs.Difflib Document v7.4Add

Learning notes for Python identifiers

The Python identifier string rule is similar to most other high-level languages written in C: One, identifier Valid identifiers: Must consist of letters, numbers, underscores, and begins with a letter or underscore. Identifiers are case sensitive.

A detailed explanation of how Python invokes Web requests

Using a script to send a GET or post is one of the simplest and most frequent things; then why do I have to yy again? Because not only practice makes perfect, ripe still can produce a lot of things come, see is with who born! I think it's necessary

Simple encapsulation of Python's logging example

With Python's logging, every time you write a log, you make a small module to make the log more convenient.The code is as follows log.py Import Logging, Logging.handlersImport ConfigImport Inspect FORMAT = '% (asctime) s-% (name) s-% (levelname)

Python finds the specified file implementation code in the directory

Fuzzy Lookup The code is as follows Copy Code Import OSFrom Glob import Glob #用到了这个模块def search_file (pattern, search_path=os.environ[' path '], PATHSEP=OS.PATHSEP):For path in Search_path.split (OS.PATHSEP):For match in

Python calculates the script for all directory sizes under the specified path

Example The code is as follows Copy Code Import Os,sysFrom Os.path import GetSize def lsdir (RootDir):List_dirs = Os.walk (RootDir)Size = 0LFor Root,dirs,files in List_dirs:For name in Files:Size + = GetSize

Examples of Python executing shell commands

A recent requirement is to execute the shell command on the page, the first thought is Os.system, The code is as follows Copy Code Os.system (' Cat/proc/cpuinfo ') But the results of a printed command on the

Notes for Python multi-line notes

Python's syntax is simple.Using a # can be a single-line annotationUse three single quotes”’The middle is the code area.”’will be able to implement multiline annotations, I go. Easy. The code is as follows Copy Code

Example of a set of difference sets for two list in Python

I. Two list difference sets If you have the following two arrays:A = [1,2,3]b = [2,3] The desired result is [1] Here's a record of three implementations: 1. The normal way The code is as follows Copy Code RET = []For

A list of Python learning notes and a meta-group understanding

The main difference between lists and tuples is that lists can be modified, and tuples cannot be modified. That is, if you want to add elements according to your requirements, the list might be better used. When a sequence cannot be modified, it is

Configuring Apache in Windows to support the Python tutorial

Detailed steps: 1. Download and install python2.5: http://www.activestate.com/activepython/downloads 2. Download Mod_python (mod_python-3.3.1.win32-py2.5-apache2.2): http://archive.apache.org/dist/httpd/modpython/win/ 3.3.1/

Python batch download watercress image code

Some pictures were found during Douban, so I was too lazy to dig them one by one. I have previously written c # and python versions for downloading, so I changed the Python code, make it easy to use.#-*-Coding: utf8 -*-Import urllib2, urllib,

Common usage tips for Python crawlers

Python has been used for more than a year. The scenarios with the largest number of python applications are web rapid development, crawling, and automated O & M: I have written simple websites, automatic Post scripts, email sending and receiving

Introduction to setting up a chatbot using Python AIML

The full name of AIML Is Artificial Intelligence Markup Language (Artificial Intelligence Markup Language). It is an XML Language used to create a natural Language software proxy. dr. Wallace and the Alicebot open source software organization were

Example of how python converts a string to a dictionary

Json is becoming more and more popular. After obtaining strings in json format through python, you can convert them to dict format through the eval function:>>> A = '{"name": "yct", "age": 10 }'>>> Eval (){'Age': 10, 'name': 'yct '}Strings and

Python tutorial on getting the current time

After introducing the background of the computer time, I will give you a summary of the examples that are commonly used to get the system time using python, so that you can get started and query quickly, and supports common date formats. Let's first

CentOS6 upgrade python to version 2.7 script

1. Install the dependency package# Yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel wget xz-y2. Compile and install python2.7# Cd ~# Wget -- no-check-certificate https://www.python.org/ftp/python/2.7.9/Python-2.7.9.tar.xz#

Total Pages: 4013 1 .... 3784 3785 3786 3787 3788 .... 4013 Go to: GO

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.