Python program to print every index of duplicate element in list

In this program we will print the index of all the duplicate element present in the list.


list1 = ["amul",1,1,1,4,5,6]
list2 = [i for i in range(len(list1)) if list1[i] == 1]
print(list2)
Output:
[1, 2, 3]

Happy Coding!

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