Remove tuple from list similar to tuple in another list

Question

i am new to python and to programming in general. I have a problem with removing tuples from a list that have similarity with tuples from another list.

List1=[(1,2,3,4,5),(1,3,6,7,8)]

List2=[(1,2,3,7,9),(1,4,8,9,10),(1,3,8,9,10)]

I want to remove tuples from List2 that have 3 similar elements in tuples of List1.

Outputlist=[(1,4,8,9,10)]

What is the most efficient way to do it? Thanks in advance.

You may get more help if you attempt some code yourself and post it in your question. Something like the following may help you get started: https://stackoverflow.com/questions/46405959/extract-common-element-from-2-tuples-python — benvc, Oct 25 '19 at 14:55

score 1 · Accepted Answer · answered Oct 25 '19 at 19:31

You can do it using a for loop, and each time your criteria is met, delete that element from List2 and go to the next one:

List1=[(1,2,3,4,5),(1,3,6,7,8)]
List2=[(1,2,3,7,9),(1,4,8,9,10),(1,3,8,9,10)]

for index, elem2 in enumerate(List2):
    for elem1 in List1:
        # Find common items using set intersection.
        commonItems = len(set(elem2).intersection(set(elem1)))
        if commonItems == 3:
            del List2[index]
            break

print(List2)

This will return:

[(1, 4, 8, 9, 10)]

Remove tuple from list similar to tuple in another list

1 Answers1