python Autopep8实现按PEP8风格自动排版Python代码
Autopep8是一个将Python代码自动排版为PEP8风格的小工具。它使用pep8工具来决定代码中的哪部分需要被排版。Autopep8可以修复大部分pep8工具中报告的排版问题。
参考网址：
https://www.python.org/dev/peps/pep-0008/
https://pypi.python.org/pypi/autopep8/
（1）安装步骤如下：
localhost:~a6$sudopipinstallautopep8 Password: Thedirectory'/Users/a6/Library/Caches/pip/http'oritsparentdirectoryisnotownedbythecurrentuserandthecachehasbeendisabled.Pleasecheckthepermissionsandownerofthatdirectory.Ifexecutingpipwithsudo,youmaywantsudo's-Hflag. Thedirectory'/Users/a6/Library/Caches/pip'oritsparentdirectoryisnotownedbythecurrentuserandcachingwheelshasbeendisabled.checkthepermissionsandownerofthatdirectory.Ifexecutingpipwithsudo,youmaywantsudo's-Hflag. Collectingautopep8 Collectingpycodestyle>=2.3(fromautopep8) Downloadingpycodestyle-2.3.1-py2.py3-none-any.whl(45kB) 100%|████████████████████████████████|51kB324kB/s Installingcollectedpackages:pycodestyle,autopep8 Successfullyinstalledautopep8-1.3.3pycodestyle-2.3.1 localhost:~a6$sudopipinstallautopep8 Thedirectory'/Users/a6/Library/Caches/pip/http'oritsparentdirectoryisnotownedbythecurrentuserandthecachehasbeendisabled.Pleasecheckthepermissionsandownerofthatdirectory.Ifexecutingpipwithsudo,youmaywantsudo's-Hflag. Thedirectory'/Users/a6/Library/Caches/pip'oritsparentdirectoryisnotownedbythecurrentuserandcachingwheelshasbeendisabled.checkthepermissionsandownerofthatdirectory.Ifexecutingpipwithsudo,youmaywantsudo's-Hflag. Requirementalreadysatisfied:autopep8in/Library/Python/2.7/site-packages Requirementalreadysatisfied:pycodestyle>=2.3in/Library/Python/2.7/site-packages(fromautopep8)
（2）示例代码：
1）运行命令前代码的排版(保存在test_autopep8.py)
importmath,sys;
defexample1():
####Thisisalongcomment.Thisshouldbewrappedtofitwithin72characters.
some_tuple=(1,2,3,'a');
some_variable={'long':'Longcodelinesshouldbewrappedwithin79characters.',
'other':[math.pi,100,200,300,9876543210,'Thisisalongstringthatgoeson'],
'more':{'inner':'Thiswholelogicallineshouldbewrapped.',some_tuple:[1,
20,300,40000,500000000,60000000000000000]}}
return(some_tuple,some_variable)
defexample2():return{'has_key()isdeprecated':True}.has_key({'f':2}.has_key(''));
classExample3(object):
def__init__(self,bar):
#Commentsshouldhaveaspaceafterthehash.
ifbar:bar+=1;bar=bar*bar;returnbar
else:
some_string="""
Indentationinmultilinestringsshouldnotbetouched.
Onlyactualcodeshouldbereindented.
"""
return(sys.path,some_string)
2）运行命令
bogon:ABa6$autopep8--in-place--aggressive--aggressivetest_autopep8.py
3）运行命令后代码的排版
importmath
importsys
defexample1():
#Thisisalongcomment.Thisshouldbewrappedtofitwithin72
#characters.
some_tuple=(1,2,3,'a')
some_variable={
'long':'Longcodelinesshouldbewrappedwithin79characters.',
'other':[
math.pi,
100,
200,
300,
9876543210,
'Thisisalongstringthatgoeson'],
'more':{
'inner':'Thiswholelogicallineshouldbewrapped.',
some_tuple:[
1,
20,
300,
40000,
500000000,
60000000000000000]}}
return(some_tuple,some_variable)
defexample2():return(''in{'f':2})in{'has_key()isdeprecated':True};
classExample3(object):
def__init__(self,bar):
#Commentsshouldhaveaspaceafterthehash.
ifbar:
bar+=1
bar=bar*bar
returnbar
else:
some_string="""
Indentationinmultilinestringsshouldnotbetouched.
Onlyactualcodeshouldbereindented.
"""
return(sys.path,some_string)
4）参考网址：
https://github.com/hhatto/autopep8
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