I don't understand simple Python code, can you help me?

Question

Python

def total(a=5, *numbers, **phonebook):
    print('a', a)
    for single_time in numbers:
        print('single_time', single_time)
    for first_part, second_part in phonebook.items():
        print(first_part, second_part)

print(total(10,1,2,3, Jack=1123, John=2231, Inge=1560))

Answer 1

You created a function that takes a variable number of parameters:
1 - "a"
2 - a list of numbers (1,2,3)
3 - a dictionary {Jack=1123, John=2231, Inge=1560}