Autopep8是一個將Python代碼自動排版為PEP8風(fēng)格的小工具。它使用pep8工具來決定代碼中的哪部分需要被排版。Autopep8可以修復(fù)大部分pep8工具中報告的排版問題。

參考網(wǎng)址：

https://www.python.org/dev/peps/pep-0008/

https://pypi.python.org/pypi/autopep8/

（1）安裝步驟如下：

localhost:~ a6$ sudo pip install autopep8Password:The directory ’/Users/a6/Library/Caches/pip/http’ or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo’s -H flag.The directory ’/Users/a6/Library/Caches/pip’ or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo’s -H flag.Collecting autopep8Collecting pycodestyle>=2.3 (from autopep8) Downloading pycodestyle-2.3.1-py2.py3-none-any.whl (45kB) 100% |????????????????????????????????| 51kB 324kB/sInstalling collected packages: pycodestyle, autopep8Successfully installed autopep8-1.3.3 pycodestyle-2.3.1localhost:~ a6$ sudo pip install autopep8The directory ’/Users/a6/Library/Caches/pip/http’ or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo’s -H flag.The directory ’/Users/a6/Library/Caches/pip’ or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo’s -H flag.Requirement already satisfied: autopep8 in /Library/Python/2.7/site-packagesRequirement already satisfied: pycodestyle>=2.3 in /Library/Python/2.7/site-packages (from autopep8)

（2）示例代碼：

1）運行命令前代碼的排版 (保存在test_autopep8.py)

import math, sys; def example1(): ####This is a long comment. This should be wrapped to fit within 72 characters. some_tuple=( 1,2, 3,’a’ ); some_variable={’long’:’Long code lines should be wrapped within 79 characters.’, ’other’:[math.pi, 100,200,300,9876543210,’This is a long string that goes on’], ’more’:{’inner’:’This whole logical line should be wrapped.’,some_tuple:[1, 20,300,40000,500000000,60000000000000000]}} return (some_tuple, some_variable)def example2(): return {’has_key() is deprecated’:True}.has_key({’f’:2}.has_key(’’));class Example3( object ): def __init__ ( self, bar ): #Comments should have a space after the hash. if bar : bar+=1; bar=bar* bar ; return bar else: some_string = ''' Indentation in multiline strings should not be touched.Only actual code should be reindented.''' return (sys.path, some_string)

2）運行命令

bogon:AB a6$ autopep8 --in-place --aggressive --aggressive test_autopep8.py

3）運行命令后代碼的排版

import mathimport sys def example1(): # This is a long comment. This should be wrapped to fit within 72 # characters. some_tuple = (1, 2, 3, ’a’) some_variable = { ’long’: ’Long code lines should be wrapped within 79 characters.’, ’other’: [ math.pi, 100, 200, 300, 9876543210, ’This is a long string that goes on’], ’more’: { ’inner’: ’This whole logical line should be wrapped.’, some_tuple: [1,20,300,40000,500000000,60000000000000000]}} return (some_tuple, some_variable) def example2(): return (’’ in {’f’: 2}) in {’has_key() is deprecated’: True}; class Example3(object): def __init__(self, bar): # Comments should have a space after the hash. if bar: bar += 1 bar = bar * bar return bar else: some_string = ''' Indentation in multiline strings should not be touched. Only actual code should be reindented. ''' return (sys.path, some_string)

4）參考網(wǎng)址：https://github.com/hhatto/autopep8

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