Alternative to Double Iteration

0 votes

I am trying to check each value in a List against every other value in the same List. If I identify something that meets some requirement, I add it to another List to be removed after this procedure is finished.

I have the following Pseudo-code:

for value1 in my_list:
    for value2 in my_list:
        if meets_requirements(value1, value2):
            to_be_removed.append(value2)

But the naming conventions for the variables are difficult to assign or understand. So is there any alternative way to do the same? Can anyone help me with a simpler method?

Apr 5, 2019 in Python by ana1504.k
• 7,910 points
454 views

1 answer to this question.

0 votes
You don't have to find the removed values first. Just create the list you need in one shot:

my_list = [y for y in my_list
             if not any(meets_requirement(x,y) for x in my_list)]
answered Apr 5, 2019 by SDeb
• 13,300 points

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