most useful python modules

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Analysis of Python OS and sys modules, pythonossys Module The official explanation of the OS and sys modules is as follows: OS: This module provides a portable way of using operating system dependent functionality. This module provides a convenient way to use operating system functions. Sys: This module provides access to some variables used or maintained by the

I. INTRODUCTIONThe module supports the logical organization of Python code.When the code is quite large, we'd better split the code into organized pieces of code, provided that they interact with each other.The operation of attaching attributes from other modules to your module is called import, and those snippets of self-contained and organized code are modules.If the module is a logical way to organize

'****************opts********************' - Print 'opts=', opts the Print '****************args********************' - Print 'args=', args - - forOpt,arginchopts: + ifOptinch('- H','--help'): - usage () +Sys.exit (1) A elifOptinch('--f_long'): at Print '--f_long=', opt - Else: - Print '%s====>%s'%(Opt,arg) - exceptgetopt. Getopterror: - Print 'getopt error!' - usage () inSys.exit (

,sys.stdout or file, default output to Sys.stderr, stream is ignored when stream and filename are specified simultaneouslyLogging.getlogger ([name]): Create a Log object:Returns a logger instance that returns root logger if no name is specified. As long as name is the same, the returned logger instances are the same and only one, that is, the name and the logger instance are one by one corresponding. This means that there is no need to pass logger instances in each module. As long as you know na

the final, also ' candidate ' represents a candidate, indicating the version level, whether there is a subsequent releaseSys.getdefaultencoding () returns the default character encoding format you are currently usingSys.getfilesystemencoding () Returns the encoded name of the Unicode file name converted to the system file nameList of built-in modules imported by the Sys.builtin_module_names Python interpre

large python programs are organized in the form of modules and packages. The Python standard library contains a large number of modules. A python file is a module. 1. Standard modulepython comes with no need for you to install2. Third-party modulesneeds to be installed, prov

Reply content:Several recently used: Automated charts for Matplotlib:python plotting , as vulgar as I can kill the chart of Excel Lightweight Demo Artifact Welcome | Flask (A Python microframework) , Django, bye. DM Pre-research with Scikit-learn:machine learning in Python Very fun theme Model implementation Gensim:topic modelling for humans cTYPES, nltk What do not say, lest be said to the Earth, althou

backtracking. \w Match Alpha-numeric\w matches non-alphanumeric numbers\s matches any whitespace character, equivalent to [\t\n\r\f].\s matches any non-null character\d matches any number, equivalent to [0-9].\d matches any non-numeric\a Match string start\z matches the end of the string, if there is a newline, matches only the end string before the line break. C\z Match string End\g matches the position where the last match was completed. \b matches a word boundary, which is the position be

setup.py--help--name Package Name--version (-V) package versionAuthor of the--author programe-mail address of the author of the--author_email program--maintainer Maintenance Persone-mail address of--maintainer_email maintainer--url Program's website addressLicensing information for--license programsA brief description of the--description programDetailed description of the--long_description programList of software platforms applicable to the--PLATFORMS program--classifiers Category List of progr

ModuleA. module : A collection of code that implements a feature with one or more. py files, providing reusability of code and coupling between code.For a complex function, multiple functions may need to be called to complete, and the function can be in a different. py file, the code collection for these n. py files is called a moduleTwo. module-to-Library relationship : A library may contain many modules, but a library has at least one moduleTypes of