python 2to3.py 2.x转换3.x

2to3.py

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#!/usr/bin/env python import sys from lib2to3.main import main   sys.exit(main("lib2to3.fixes"))

 

demo.py

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def greet(name):     print "Hello, {0}!".format(name) print "What's your name?" name = raw_input() greet(name)

　　

 

执行命令:

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1	python 2to3.py  demo.py 显示差异

　

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1	python 2to3.py -w demo.py 修改文件,源文件会被命名为demo.py.bak