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      1. 为什么我的函数不将值返回给全局变量?

        Why does my function not return value to global variable?(为什么我的函数不将值返回给全局变量?)

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                • 本文介绍了为什么我的函数不将值返回给全局变量?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

                  为什么 print(squared) 返回 0 而不是 100?

                  我以为从函数返回后-变量squared的值会被赋值给同名的全局变量?

                  I thought that after being returned from the function - the value of the variable squared would be assigned to the the global variable with the same name?

                  squared = 0
                  def square(n):
                      """Returns the square of a number."""
                      squared = n**2
                      print "%d squared is %d." % (n, squared)
                      return squared
                  
                  
                  square(10)
                  print(squared)
                  

                  返回:

                  推荐答案

                  将函数的结果赋值给变量:

                  Assign the result of the function to the variable:

                  squared = square(10)
                  

                  这就是在函数中使用 return squared 的重点,不是吗?

                  This is the whole point of using return squared in the function, isn't it?

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