Is x+=y different from x=x+y?

Question

Okay, so i tried same code as written above but i changed x*=3 to x=x*3 it is giving me this answer,
#1

Code:
def chval(x):
x*=3
print(x)
x=3
chval(x)
print(x)
x=[1,2]
chval(x)
print(x)

Output:
9
3
[1, 2, 1, 2, 1, 2]
[1, 2, 1, 2, 1, 2]

#2

Code:
def chval(x):
x=x*3
print(x)
x=3
chval(x)
print(x)
x=[1,2]
chval(x)
print(x)

Output:
9
3
[1, 2, 1, 2, 1, 2]
[1, 2]

Someone explain this to me. Thank You

Answer 1

x = x * 3 first creates a new list object on the right side, then uses the name x for it.

So you're reassigning the name x in the function to something completely new.

x *= 3 on the other hand modifies the original list, so you'll end up with the list changed outside of the function.

Kiibo's right, my tutorial should clarify all these things.

Answer 2

No.not different.