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