def print_dict(dict: dict):
    for k, v in sorted(dict.items()):
        print("Operator {0} means {1}.".format(k, v))


operators_dict = {'<': 'less than', '==': 'equal'}

print('Here is the original dict:')

print_dict(operators_dict)

operators_dict['>'] = 'greater than'

print("\nThe dict was changed to:")
print_dict(operators_dict)