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问题描述
我知道 lambda 没有返回表达式.正常
I know lambda doesn't have a return expression. Normally
def one_return(a):
#logic is here
c = a + 1
return c
可以写成:
lambda a : a + 1
如何在 lambda 函数中编写这个:
How about write this one in a lambda function:
def two_returns(a, b):
# logic is here
c = a + 1
d = b * 1
return c, d
推荐答案
是的,有可能.因为像这样的表达式在函数的末尾:
Yes, it's possible. Because an expression such as this at the end of a function:
return a, b
相当于这个:
return (a, b)
在那里,您实际上返回了一个值:一个恰好有两个元素的元组.所以可以让 lambda 返回一个元组,因为它是单个值:
And there, you're really returning a single value: a tuple which happens to have two elements. So it's ok to have a lambda return a tuple, because it's a single value:
lambda a, b: (a, b) # here the return is implicit
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