Analysis of global variable usage in Python

This example analyzes the use of global variables in Python. Share to everyone for your reference. The specific analysis is as follows: Python is an object-oriented development language, the use of global variables in functions, generally should be

How Python uses minidom to read and write XML

The example in this article describes how Python uses Minidom to read and write XML. Share to everyone for your reference. The specific analysis is as follows: A python-provided XML support 2 Industrial Standard XML parsing methods-sax and Dom.

Python scans IP segment to see if the specified port is open

The example in this article describes how the Python scan IP segment will see whether the specified port is open. Share to everyone for your reference. The implementation methods are as follows: ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Python Stack class example analysis

This example describes the Python stack class. Share to everyone for your reference. Specifically as follows:? 1 2 3 4, 5 6 7 8 9 10 11 12 13 14 15 Class Path: #a list used like a stack def __init__ (self): self. P = [] def push

The index () method in Python uses the tutorial

This article mainly introduces the index () method in Python using the tutorial, is the basic knowledge of Python introductory learning, need friends can refer to the The index () method determines string str if a substring of the string or string

How Python uses WMI modules to get information about hard disks under Windows

This article describes the way Python uses WMI modules to get information about hard disks under Windows. Share to everyone for your reference. The implementation methods are as follows: ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Using Python to compute the Atan () method of trigonometric functions

This article mainly introduces the use of the Atan () method of using Python to compute trigonometric functions, which is the basic knowledge of the introduction of Python, and the need of friends can refer to The Atan () method returns the tangent

From the python source to parse the Freeblock under Python

This article mainly introduces the source code of Python to parse the freeblock under Python, including the memory space allocation and so on knowledge, needs the friend to be possible to refer to under 1 Introduction In Python memory management,

Python uses Chardet to judge character encodings

This article mainly introduces Python using Chardet to judge the character encoding method, in a more detailed analysis of Python chardet function, installation and use of skills, the need for friends can refer to the Python Chardet used to

Issues to be aware of when using global logging in Python

This article mainly describes the use of the global log in Python need to pay attention to the problem, the author by the use of Uliweb problems encountered when the global log error resolution, the need for friends can refer to the After the soap

How to handle index statistics with a dictionary in Python

This article mainly introduces the use of the dictionary in Python to deal with index statistics, the use of the dictionary is the basic knowledge of Python learning, this article is related to a small practice, the need for friends can refer to the

Use partial to change method default parameter instances in Python

This article mainly introduces Python use partial change method default parameter instance, this article directly gives the use instance, the code contains the detailed annotation, the need friend may refer to the next Partial objects is one of a

The RFind () method in Python uses the detailed

This article mainly introduces the RFind () method in Python using the detailed, is the basic knowledge of Python, need friends can refer to the The RFind () method returns the last index found by the child str, or-1, optionally restricting the

Use of the Count () method for Python string handling

This article introduces the use of the count () method of Python string processing, which is the basics of getting started in Python, and needs friends to refer to the The count () method returns the string number range [Start, end] that appears in

Python's multi-threading threading Module

#_ *_coding:utf-8_*_import threadingfrom time import sleep,ctime# number of seconds loops = [4,2]# This function simulates a function that is actually used to work Def loop (nloop,nsec):    print  "function%s  start time:%s  wait seconds :%s \n " % (

Seventh Python basics functions, recursion, built-in functions

Read CatalogueA mathematical-defined function and a function in PythonSecond, why use a functionBackground summaryThree functions and proceduresFour function parametersFive local variables and global variablesSix forward reference ' function is

Explain the Socketserver module in Python to handle network requests

Socketserver Create a Network service framework. It defines classes to handle synchronous network requests on TCP,UDP, UNIX streams, and UNIX datagrams. First, Server Types There are five different server classes in Socketserver. 1.BaseServer

The idea of Python designing the program of the Football League schedule

The football tournament is a team in a season to face the league in addition to their own team in the game, for which we can use a loop algorithm to achieve, then take a look at the Python Design Football League schedule program and simple

Iterator and builder advanced usage in Python

iterators An iterator is an object attached to an iterative protocol-basically means that it has a next method, and when called, returns the next item in the sequence. Throws a (raise) Stopiteration exception when no item can be

Learn scapy and how to learn scrapy

Learn scapy and how to learn scrapy   It was not long ago that we knew the scapy tool. Its strength lies in its ability to modify data packets, which is more convenient to use based on python. I really started to study TCP/IP half a year ago, but I

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