Python自动格式化代码(PEP8格式)

1.关于pep8格式

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

Github地址 :https://github.com/hhatto/autopep8

2.格式化代码

通过第三方python代码(autopep8)来格式化代码。

2.1安装

pip install --upgrade autopep8

2.2使用

原python代码格式

[root @ rhl]# cat test.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)

格式化后的代码：
将格式化后的代码重新写入文件中
# autopep8 --in-place --aggressive --aggressive test.py
或直接看格式化效果，不覆盖原有的代码

autopep8 --aggressive --aggressive test.py

查看格式化后代码：

[root @ rhl]# cat test.py
import math
import 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)