changing value

Question

a=10; b=20
not using new variable and changing a and b's value
the result should be
print(a,b)
=> 20 10

Answer 1

a, b = b, a

Answer 2

https://code.sololearn.com/cL5HIF7ChdOk/?ref=app
https://code.sololearn.com/coDZbR5gBKgr/?ref=app

Answer 3

Swap parameters in the print function:
print(b,a)
=>20 10

Answer 4

>>> a, b = 10, 20
>>> print((a, b)[::-1])
(20, 10)