Array - 217. Contains Duplicate

#===================================
# Tanzila Islam
# Email: tanzilamohita@gmail.com
# Language: Python 3
#===================================

class Solution:
    def containsDuplicate(self, nums: List[int]) -> bool:
        set_nums = set(nums)
        if len(nums) != len(set_nums):
            return 1
        else:
            return 0