如何从具有多个输出的函数中获取单个输出? [英] How to get a single output from a function with multiple outputs?

问题描述

我有以下简单功能:

def divide(x, y):
    quotient = x/y
    remainder = x % y
    return quotient, remainder  

x = divide(22, 7)

如果我访问变量x，我得到:

If I accesss the variable x I get:

x
Out[139]: (3, 1)

有没有办法只得到商或的余数?

Is there a way to get only the quotient or the remainder?

推荐答案

您有两个广泛的选择，或者:

You have two broad options, either:

1. 修改该函数以适当地返回一个或两个，例如:

1. Modify the function to return either or both as appropriate, for example:

def divide(x, y, output=(True, True)):
    quot, rem = x // y, x % y
    if all(output):
        return quot, rem
    elif output[0]:
        return quot
    return rem

quot = divide(x, y, (True, False))

函数保持不变，但显式忽略返回值中的一个或另一个:

Leave the function as it is, but explicitly ignore one or the other of the returned values:

quot, _ = divide(x, y)  # assign one to _, which means ignore by convention
rem = divide(x, y)[1]  # select one by index

我强烈建议使用后一种说法； 更简单！

I would strongly recommend one of the latter formulations; it's much simpler!

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