Python

The module name of the Python regular expression is ' re '>>> Import re>>> rawstring = R ' This is A\nnormal string. '>>> rawstring' This is a\nnormal string. '>>> string = ' This is a\nnormal string. '>>> string' This is aNormal string. '===========

Import Urllibrawurl=xxxurl=urllib.unquote (Rawurl)Module used: UrllibFunction used: Urllib.unquote ()CaseImport"%e6%b2%b3%e6%ba%90"= urllib.unquote (rawurl) Print URLOutputHeyuanProblem extensionUrllib.unquote () is intended to decode the URL

Judge the end of the fileMethod One, read one line at a time:While 1:Line=f.readline ()If not line: #注空行不会被视为文件尾, as the upper floor says empty lines are characters . Line breakBreak#....go on ...After reading line, the first to determine whether it

Contacted Ruby and found it has a package management tool Rubygem is very useful and has a very complete documentation system Http://rdoc.infoDiscovery Python also has the same tools, including Easy_install and Pip. Just, I did not examine the

The ZIP function can accept any sequence as a parameter, returning a list of elements in the tuple:>>> a=[1,2,3]>>> b=[4,5,6]>>> Zip (A, b) [(1, 4), (2, 5), (3, 6)]>>>When the number of two sequence elements is inconsistent, whichever is less:>>> a[1

I have been learning python for a while, but still at the entry level, Python's statement block is expressed in indentation, the process of variable assignment is the process of declaration, and there is too much Python moduel I do not like to

1, exception: ' ASCII ' codec can ' t encode charactersCharacter set problem, add two sentences before the file:Import SysReload (SYS)Sys.setdefaultencoding ("Utf-8")2,the ' \xa0 ' character in Unicode has a problem converting to GBK encoding, GBK

1, create the file: Vi/root/.pystartup, the code is as follows:Import sysimport readlineimport rlcompleterimport atexitimport osreadline.parse_and_bind (' tab:complete ') histfile = OS . Path.join (os.environ[' HOME '], '. Pythonhistory ')

The Glob module is one of the simplest modules, with very little content. Use it to find the file path name that matches a specific rule. It's almost like using a file search under Windows. Only three matches are used to find a file: "*", "?", "[]".

We chose to do Python programming under Ubuntu: Create a. py file, which starts with the Python code, and then uses the command $python file name in the shell to display the results of the run.Here are a couple of string-related functions and syntax:

>>> reply = "" "Greetings ...Hello% (name) s!Your Age squared was% (age) s""">>> values = {' name ': ' Bob ', ' Age ': 40}>>> Print (reply% values)Greetings ...Hello bob!Your Age Squared is 40DescriptionIn the default statement, you can directly

Import multiprocessingImport Time,datetimedef ssh_cmd (host,cmdfile):elog = open (' Error.log ', ' A + ')log = open (' 7z.log ', "A +")For CMD in open (Cmdfile). ReadLines ():CMD = Cmd.strip ()if not Len (CMD) or Cmd.startswith (' # '):Continuessh =

#!/usr/bin/python#-*-encoding:utf-8-*-Import SYSIf Len (SYS.ARGV) print (' Usage:python sys.argv[0] FileName ')sys.exit (1)Else:print (' \nunix2dos.py execution successfully!\n ')File=sys.argv[1]fileobj = open (File, ' RU ')Try:allfile =

class Singleton2 (type):      def  __init__ ( cls , name, bases, dict):               super (Singleton2, cls          cls ._instance = &NBSP, none Span style= " margin:0px; padding:0px; border:none;

Http://iyuan.iteye.com/blog/855933Python, is only a list of some of their own use, feel very reliable third-party modules.PEP8 http://pypi.python.org/pypi/pep8/0.6.1This is a static check code format, especially for the new people from other

About Eclipse Configuration Pydev, please readers themselves Baidu, here Dapeng brother directly about the above work after the Django installation and configuration:First download the Django installation package: shaped like django-*.*.*.tar.gz (eg.

Python declares the data method that only contains one element. When debugging the program, I suffered this loss. I don't know why Python uses brackets to declare the boundary. It is estimated that no proper symbol can be found. Brackets are used to

Python implements a small program code sharing, python change The Python program looks for change at the nominal value. It uses our normal thinking logic to find a change from a large nominal value to a small nominal value. The RMB nominal value is 1

Deep copy and shallow copy of Python objects The content of this article is shown in "Python core programming 2". It is useful and can be written for your reference! Shortest copy First, we use two methods to copy objects, one is slicing and the

Python is used to find the position and number of characters 1 from a string. This example shows how to obtain the position of a character in a string and the total number of occurrences. When implementing this function code, you can use the