containsDuplicateHshSet.py

def containsDuplicate(lst)->bool:
    hashset = set()# in python we can directly create hashset with set, hashset is same as python set, here we use set because it only takes unique elements as input
    for i in lst:
        if i in hashset:
            return True#if i in hashset it will ignore rest of function and return true as result, but only if its false till the last iteration, it will proceed to last part of code where it will return false.
        hashset.add(i) #This is the part which runs if  "if" is unsuccessful,we add the element to the hashset
        print(hashset)
    return False