Python 2 to Python 3 convert

2to3, 自动将 Python 2 代码转为 Python 3 代码

https://docs.python.org/zh-cn/2/library/2to3.html

$ 2to3 example.py

# -w

$ 2to3 -w example.py

$

demo

before, Python 2

def greet(name):

    print "Hello, {0}!".format(name)

print "What's your name?"

name = raw_input()

greet(name)

after, Python 3

def greet(name):

    print("Hello, {0}!".format(name))

print("What's your name?")

name = input()

greet(name)

2to3 in action

# coding: utf8

__author__ = 'xgqfrms'

__editor__ = 'vscode'

__version__ = '1.0.1'

__copyright__ = """

  Copyright (c) 2012-2050, xgqfrms; mailto:xgqfrms@xgqfrms.xyz

"""

class Test(object):

  def sum(a, b):

    sum a + b

    print "a+b=" + sum

    return sum

2to3

# coding: utf8

__author__ = 'xgqfrms'

__editor__ = 'vscode'

__version__ = '1.0.1'

__copyright__ = """

  Copyright (c) 2012-2050, xgqfrms; mailto:xgqfrms@xgqfrms.xyz

"""

class Test(object):

  def sum(a, b):

    sum a + b

    print("a+b=", sum)

    return sum