Question

我有一些用Python 2.7编写的Python脚本。我必须在Python 3.x中使用这些脚本，但我必须改变很多东西，如：

print "something"

到

print ("something")

因为Python 3.x不支持没有括号的 print 函数。我不想手动这样做，因为它太长而且太难了。我尝试了重新模块但失败了。我被困了，所以任何帮助都会受到赞赏。

Answer 1

尝试自动2to3库

https://docs.python.org/2/library/2to3.html

$ 2to3 example.py

直接进行更改

$ 2to3 -w example.py

<强> STEPS

将您的代码写入名为example.py
的文件中
print "something"
保存并关闭。打开终端并输入

2to3 -w example.py
立即打开文件。 Tada ......代码被转换

print(something)

Answer 2

你可以尝试这样的事情。

import re                 

with open("myprogram.py","r",encoding='utf8') as f:
    for x in f.readlines():
        y = x   # Main code x defining as y.
        if re.findall("print",x) == ['print']: # if 'print' is found;
            x = "print(" + x.split("print")[1].strip() + ")" # strip it quotation mark and paranthesis;
            y = y.replace(y,x)  #.. replace y with x.
        with open("different.py","a+") as ff:
            (y.strip()) # attention using \n for every sentence..

但它可能会破坏您的代码设计。所以打印并复制粘贴。

import re                 

with open("myprogram.py","r",encoding='utf8') as f:
    for x in f.readlines():
        y = x   # Main code x defining as y.
        if re.findall("print",x) == ['print']: # if 'print' is found;
            x = "print(" + x.split("print")[1].strip() + ")" # strip it quotation mark and paranthesis;
            y = y.replace(y,x)  #.. replace y with x.
        print(y.strip())

将脚本转换为不同版本的Python

2 个答案: