[FIXED] Able to retrieve zipped values only once in python?

Issue

I created two lists in python 3.7.1, and zipped them using zip.

When I tried printing the result to the console, it worked the first time, but gave an empty list afterwards:

Why i am able to retrieve the values only once?

Solution

The zip function is actually just an iterator -- an iterator can only be traversed once. If you want to be able to iterate over it multiple times, convert it to a list first.

a = [1,2,3]
b = [1,2,3]
c = list(zip(a, b))

Answered By - Russell Cohen