contains duplicate : leetcode solution in python

class Solution:
    def containsDuplicate(self, nums: List[int]) -> bool:
        try:
            freq = 1
            dup = False
            nums_freq_dict = {}
            for each_ele in nums:
                if each_ele not in nums_freq_dict:
                    nums_freq_dict[each_ele] = 1
                else:
                    freq += 1
                    nums_freq_dict[each_ele] = freq
                    #print(nums_freq_dict)
                    if freq >= 2:
                        dup = True
                        return True
                        break
            if not dup:
                return False
        except:
            pass

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