TypeError("'int' object is not iterable")
TypeError('elements() takes no arguments (1 given)')
TypeError('most_common() expected at most 1 arguments (2 given)')
TypeError("'str' object cannot be interpreted as an integer")
[]
[('l', 2), ('h', 1), ('e', 1), ('o', 1)]
TypeError('update() takes at most 1 arguments (2 given)')
TypeError("'int' object is not iterable")
TypeError('subtract() takes at most 1 arguments (2 given)')
TypeError("'float' object is not iterable")