按PEP8风格自动排版Python代码

2019-11-06 06:21:23

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如果用编辑器写代码，很容易会怎么顺手怎么来，而每个人的写代码习惯有很大不同，这样会导致可读性不是很好，代码维护起来比较困难，当然各种编辑器一般都有各种用来自动排版的插件，例如Sublime Text就有：Python PEP8 Autoformat，使用方法：

默认快捷键：

Ctrl + Shift + R

不过，python的一些install脚本还是很强大的，例如python的autopep8库：（链接：https://github.com/hhatto/autopep8）

$ pip install --upgrade autopep8

然后在命令行：

$ autopep8 --in-place --aggressive --aggressive <filename>

就可以对代码进行pep8自动排版，对比了下效果，如下： 排版前

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)

使用Sublime Text中的Python PEP8 Autoformat自动排版

import mathimport sysdef 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)

使用autopep8自动排版

import mathimport sysdef 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)

可以看到虽然都是PEP8风格，但是效果还是略有不同，可以根据需要个人习惯进行有选择的使用。

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