Duplicate checker

Mahendra Kumar

beginnerDSAlist

Python program to check for duplicates in a list

# take list
my_list = [1, 2, 4, 5, 7, 4, 2, 10, 8, 8, 9]
# printing original list
print('List:', my_list)
# check duplicates using set()
seen = set()
duplicate_item = {x for x in my_list if x in seen or (seen.add(x) or False)}
if duplicate_item:
    print('Yes, the list contains duplicates.')
else:
    print('No, the list does not contains duplicates.')