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+--- Thread: Newbie question for unzip zipped list (/thread-6965.html)
Newbie question for unzip zipped list - zydjohn - Dec-15-2017
Hello:
I have some code, but I want to do the reverse:
list1 = [1,2,3,4] list2 = [2,3,4,5] list3 = [3,4,5,6] list4 = [4,5,6,7] zip4List = zip(list1,list2,list3,list4)The fact is: I already have a zipped list which was generated by 4 lists zipped together, but I want to get each of the list from the zipped one, in my above example, I want to get the list1, list2, list3 and list4.
I search around, it seems python has only zip function, but no unzip function.
Any idea how to code to unzip the above zipped list?
Thanks,
RE: Newbie question for unzip zipped list - stranac - Dec-15-2017
a, b, c, d = zip(*zip4List)That will get you tuples, but if you really need lists, you can call
list() on them.
RE: Newbie question for unzip zipped list - wavic - Dec-15-2017
What does zipped list mean? zip(*args) returns a zip object which is either iterator or generator. Don't know exactly. So, zip4list is not a list of lists. In order to get one is a little change.
zip4list = [list(item) for item in zip(list1,list2,list3,list4)]