python - lambda 可以有多个回报吗
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python - can lambda have more than one return
提问by Shengjie
I know lambda doesn't have a return expression. Normally
我知道 lambda 没有返回表达式。一般
def one_return(a):
#logic is here
c = a + 1
return c
can be written:
可以写成：
lambda a : a + 1
How about write this one in a lambda function:
在 lambda 函数中写这个怎么样：
def two_returns(a, b):
# logic is here
c = a + 1
d = b * 1
return c, d
采纳答案by óscar López
Yes, it's possible. Because an expression such as this at the end of a function:
是的，这是可能的。因为在函数末尾有这样的表达式：
return a, b
Is equivalent to this:
相当于：
return (a, b)
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:
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。所以让 lambda 返回一个元组是可以的，因为它是一个单一的值：
lambda a, b: (a, b) # here the return is implicit
回答by Daniel Roseman
Sure:
当然：
lambda a, b: (a + 1, b * 1)
回答by mgilson
what about:
关于什么：
lambda a,b: (a+1,b*1)
