Filter Function

 Takes input a function which returns True/False and keeps the items which return True.

passwords = ['72tK3', '6zW5P3', '1P3=it3?', 'i"u7/auX{m']


def strong_password(password):
    return len(password) >= 8


allowed_passwords = list(filter(strong_password, passwords))
print(allowed_passwords)

Output:
['1P3=it3?', 'i"u7/auX{m']