【leetcode❤python】217. Contains Duplicate

#-*- coding: UTF-8 -*-
class Solution(object):
    def containsDuplicate(self, nums):
        numsdic={}
        for num in nums:
            numsdic[num]=numsdic[num]+1 if num in numsdic else 1
            if numsdic[num]>=2:
                return True
        
        return False

sol=Solution()
print sol.containsDuplicate(nums=[1,2,3,4,4])