Emmanuel Sunil Emmanuel Sunil - 1 year ago 79
Python Question

Find the indicies of common tuples in two list of tuples without loop in Python

How can one find the indexes of the common tuples in two list of tuples?

tuplelist1 = [("a","b"), ("c","d"), ("e","f"), ("g","h")]
tuplelist2 = [("c","d"),("e","f")]

So the indices in tuplelist1 that are common with tupplelist2 are indices 1 and 2.

Is there a way to figure this out without a loop? Is there a way to do this with sets or list comprehension, for instance?


Answer Source

With a list comprehension, you could do

indices_of_shared = [index for (index, pair) in enumerate(tuplelist1) if pair in tuplelist2]
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