问题
If I have a tuple such as (1,2,3,4) and I want to assign 1 and 3 to variables a and b I could obviously say
myTuple = (1,2,3)
a = my_tuple[0]
b = myTuple[2]
Or something like
(a,_,b,_) = myTuple
Is there a way I could unpack the values, but ignore one or more of them of them?
回答1:
Your solution is fine in my opinion. If you really have a problem with assigning _ then you could define a list of indexes and do:
a = (1, 2, 3, 4, 5)
idxs = [0, 3, 4]
a1, b1, c1 = (a[i] for i in idxs)
回答2:
I personally would write:
a, _, b = myTuple
This is a pretty common idiom, so it's widely understood. I find the syntax crystal clear.
来源：https://stackoverflow.com/questions/9532576/ignore-part-of-a-python-tuple