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      没有返回任何内容时的文档字符串

      Docstrings when nothing is returned(没有返回任何内容时的文档字符串)
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              • 本文介绍了没有返回任何内容时的文档字符串的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                问题描述

                当函数不返回任何内容时,文档字符串的约定是什么?

                What is the docstring convention when a function doesn't return anything?

                例如:

                def f(x):
                    """Prints the element given as input
                
                    Args:
                        x: any element
                    Returns:
                    """
                    print "your input is %s" % x
                    return
                

                我应该在文档字符串中的 Returns: 之后添加什么?没有现在的样子?

                What should I add after Returns: in the docstring? Nothing as it is now?

                推荐答案

                你应该使用 None,因为这是你的函数实际返回的:

                You should use None, as that is what your function actually returns:

                """Prints the element given as input
                
                Args:
                    x: any element
                Returns:
                    None
                """
                

                Python 中的所有函数都返回一些东西.如果您没有显式返回值,则默认情况下它们将返回 None:

                All functions in Python return something. If you do not explicitly return a value, then they will return None by default:

                >>> def func():
                ...     return
                ...
                >>> print func()
                None
                >>>
                

                这篇关于没有返回任何内容时的文档字符串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跟版网!

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