my python code is not working.....i want to find if the entered list contains duplicate items -

i want use function find duplicate items in list, code not working:

p = "enter list\n" t = raw_input(p) def has_duplicate(t):    o = sorted(t)    = 0    while < len(o):        if o[i] == o[i + 1]:             print "the list has duplicates"        elif o[i] != o[i+1]:                    += 1        if >= len(o):          print "the list has no duplicate" 

it gives me error saying has_duplicates not defined.

as @mgilson commented, issue calling function incorrectly (has_duplicates vs has_duplicate) however...

the straight forward way using set , comparing len.

def has_duplicates(t):     return len(set(t)) != len(t) 

if take iterable , wrap in set end unique items. if length of set same original iterable have no duplicates. if length different (will equal or smaller) have duplicates removed when converting set type.