Why the output is different ?

Question

def f1():
print('hello')
print(f1)
print(id(f1))

Answer 1

it's the same number, but one is in decimal and the other in hexadecimal.

proof:

def f1():
print('hello')
print(f1)
print(id(f1))
print(f'{id(f1):x}')

P.S.: id is the address in memory if I am right

Answer 2

It's defferent because that number are in defferent base value example: 0123456789 this number is base 10 notation and some numbers has base 16 means it contains 16 digitis.

there are four types of number system
Binary numbers base 2 (0 or 1)
Octal numbers base 8 (0 to 7)
Decimal number base 10 (0 to 9)
Hexadecimal number base 16 (0 to 9 and a to f)

All the numbers represents the same value.