How to find the index of value in python list?

How do i find duplicates in a list in Python?

• I need to create a function that find duplicates in a list in python. I want it to return a boolian for True or False and i cant use the set function. It has to use while loops and counters. In the end it will looks something like this except hopefully it will work. birthdaylist = [1,3,2] counter = 0 for index in range(len(birthdaylist)): for indexB in range(len(birthdaylist)): if birthdaylist[index] == birthdaylist[indexB] and birthdaylist[indexB] != counter: print True counter += 1

• Answer:

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