Return multiple lists from comprehension in python

2018-06-11 07:49:48

Is there any way in Python to return multiple lists from a comprehension?

I want to do something to the effect of:

x,y = [i,(-1*j) for (i,j) in enumerate(range(10))]
# x = [0 .. 9]
# y = [0 .. -9]

that's a dumb example, but I'm just wondering if it's possible.

x,y =zip(* [(i,(-1*j)) for (i,j) in enumerate(range(10))] )

你只需解压缩列表

xy = [(1,2),(3,4),(5,6)]
x,y = zip(*xy)
# x = (1,3,5)
# y = (2,4,6)

You can skip the list comprehension:

>>> x,y=range(0,10), range(0,-10,-1)
>>> x
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> y
[0, -1, -2, -3, -4, -5, -6, -7, -8, -9]

Or you could do:

>>> x,y=map(list, zip(*[(e,-e) for e in range(10)]))

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