在 python 3.x 中删除 raw_input() 的原因是什么? [英] What was the reason for removing raw_input() in python 3.x?

问题描述

为什么现在要和 input() 合并，首先使用它有什么好处?

Why has it now been merged with input(), and what were the advantages of using it in the first place?

推荐答案

旧的 raw_input 现在称为 input.它仍然是读取用户输入的默认方式.

The old raw_input is now called input. It's still the default way of reading user input.

另一方面，旧的input 用于eval 用户输入的任何内容.然而，eval 是危险的(如果我输入 import os; os.system("something evil") 会发生什么?)所以这个选项被删除了.

The old input, on the other hand, used to eval whatever the user entered. eval, however, is dangerous (what happens if I input import os; os.system("something evil")?) and so this option was removed.

最初，正如我们从 PEP 3111 中看到的那样，它的目的是删除两者，但他们选择保留 raw_input 的功能，因为它真的很方便.

Originally, as we can see from PEP 3111, it was intended to remove both, but they chose to keep the functionality of raw_input around, because it was really handy.

旧 input 有害的观点也在 邮件列表，讨论更改时:

The idea that old input is harmful is also indicated on the mailing lists, when the changes were discussed:

就我个人而言，我认为 input() 不应该存在并且必须去无论.我认为 raw_input() 值得讨论——我不会需要它，但它只不过是一个方便的功能.

Personally, I think input() should never have existed and must go no matter what. I think raw_input() is worth discussing -- I wouldn't need it, but it's little more than a convenience function.

如果您真的需要旧的input，请使用eval(input(...)).

If you really need old input, use eval(input(...)).

这篇关于在 python 3.x 中删除 raw_input() 的原因是什么?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！