Python default module OS and Shutil utility functions

OS.SEP can replace the operating system-specific path delimiter. Under Windows for'\\'the Os.name string indicates the platform you are using. For Windows, for example, it is'NT', and for Linux/unix users, it is'POSIX'The os.getcwd () function

Use of the Python standard library urllib2

1, the proxy setting URLLIB2 uses the environment variable HTTP_PROXY to set the HTTP proxy by default. If you want to explicitly control the Proxy in the program, not affected by the environment variables, you can use the following

Preparing for machine learning with Python

The language used for machine learning is python. Here's how to get started with Python for "machine learning." (Environment: CentOS 7)1, two important packagesNumPy and SciPy. (http://scipy.org/scipylib/download.html) mainly deals with numerical

Python Custom Windows boot entry

Recently found that the computer boot speed more and more slowly. Ready to write a startup applet with Python:1: Wait for 12s wait for network connection after power on, after judging the network, if still is not connected, abandon boot start

Some tips for catching a station with Python crawlers

1.[Code]The most basic grasping station? 12 importurllib2content =urllib2.urlopen(‘http://XXXX‘).read() 2.[Code]Using a proxy server? 12345 importurllib2proxy_support = urllib2.ProxyHandler({‘http‘:

Python Advanced Programming (12th: Optimizing learning) 1

#-*-Coding:utf-8-*-# python:2.x__author__ = ' Administrator '#由于5, 6,7,8,9,10,11 is mainly in the package, testing and other studies so this side does not study#优化: general principles and profiling techniquesPrint (U ' premature optimization is the

The OO idea of Python

When I was a sophomore, I studied Java at school,The most awesome oo idea, with 3 pages of paper is finished, or Tsinghua University Press.Later all by themselves Chew video, chew code to understand what is called OO.Learn Python now and learn it in

Python Program execution principle

1. First view the Pycodeobject's struct in code.h1 typedef struct {2 Pyobject_head3int co_argcount; /*#arguments, except *args * *4int co_nlocals; /*#Local Variables * /5int co_stacksize; /*#entries needed for evaluation stack * /6int co_flags; /*

Python download online Read the script of Tomb Raider literary sketches

Recently busy to see the novel, find a full south of the three-uncle's novel website, decided to download down to see, so hands-on, in a lot of QQ Group Master's help (I am the expression is very rotten, the program complex is a few master guidance),

Elegant Python-Achieve a minimalist priority queue

A queue satisfies a minimum of 2 methods, put and get.Implemented with minimal heap.This is the order in which the higher the value priority is.#coding =utf-8from HEAPQ Import Heappush, Heappopclass priorityqueue: def __init__ (self): self.

VIRTUALENV build Python development environment on Windows

This paper mainly records the problems and solutions encountered in setting up the environment. about Setuptools, Pip, virtualenv, Environment: win8.1+python2.7.6 1.setuptools:easily download, build, install, upgrade, and uninstall Python

Python implementation message send complete code (with attachment Send method)

Example one: Using SMTP and email to send mail, with attachments (full code)__author__ = ' Administrator '#coding =gb2312From email. Header Import HeaderFrom email. Mimetext Import MimetextFrom email. Mimemultipart Import MimemultipartImport Smtplib,

Python implementation of Pycode:pubwin member merging

Pubwin member merger program written in the previous periodFor text versions, see http://www.cnblogs.com/sprite/p/3477734.html#-*-coding:gbk-*-# Pubwin member Repare tools# change member level by score# code by Spriteimport Pymssqlimport _mssqlimpo

Python's way to make EXE executables---use Pyinstaller

Python's way to make EXE executables---use Pyinstaller python to generate an executable program in the Windows EXE format with three options: Py2exe is well known, today to introduce Pyinstaller, this tool is available on a full platform. I used

Introduction to array and multi-dimensional array usage in python, multi-dimensional python

Introduction to array and multi-dimensional array usage in python, multi-dimensional python You can add a. append ('A. As long as it is added in order, there is no problem.You can use the subscript: The Code is as follows:A [0]A [1] If the

Keep up with the passing of summary parameters of Python and learn python Parameters

Keep up with the passing of summary parameters of Python and learn python Parameters As mentioned above, the basic content of the function has been completed. However, there are still a lot of interesting details about functions. It is described

Python Data Structure-Array usage example, pythonarray

Python Data Structure-Array usage example, pythonarray The example in this article describes the Array usage of the python data structure for your reference. The specific method is as follows: import ctypes class Array: def __init__(self, size):

Examples of two-dimensional array transformation in python and python Array

Examples of two-dimensional array transformation in python and python Array This article describes how to transform a two-dimensional array in python. Share it with you for your reference. The specific method is as follows: First look at the

Python scans Forum replies and automatically sends attachments (such as requests)

Python scans Forum replies and automatically sends attachments (such as requests)Background: The author needs to share some books on www.kindle114.com. In view of the various online storage devices, copyright-related sharing will become invalid and

Program simulation browser request and session persistence-python implementation, session-python

Program simulation browser request and session persistence-python implementation, session-python You can use urllib2 to read data from a page in python to easily implement requests. import urllib2print urllib2.urlopen('http://www.baidu.com').read()  

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