python使用三引号来注释的具体原因？ [英] Specific reason why python uses triple-quotation marks for comments?

问题描述

为什么没有python只是使用传统风格的评论，如C / C ++ / Java使用：

Why didn't python just use the traditional style of comments like C/C++/Java uses:

/**
 * Comment lines 
 * More comment lines
 */

// line comments
// line comments
//

这是有具体原因还是只是任意？

Is there a specific reason for this or is it just arbitrary?

推荐答案

Python不会对注释使用三重引号。注释使用哈希（aka pound）字符：

Python doesn't use triple quotation marks for comments. Comments use the hash (a.k.a. pound) character:

# this is a comment

三重引号是一个 doc字符串，并且与注释不同，实际上作为程序的真实字符串可用：

The triple quote thing is a doc string, and, unlike a comment, is actually available as a real string to the program:

>>> def bla():
...     """Print the answer"""
...     print 42
...
>>> bla.__doc__
'Print the answer'
>>> help(bla)
Help on function bla in module __main__:

bla()
    Print the answer

它不是严格要求使用三重引号，只要它是一个字符串。使用只是一个约定（并且具有多行的优点）。

It's not strictly required to use triple quotes, as long as it's a string. Using """ is just a convention (and has the advantage of being multiline).

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