What is the *= in python

Question

l

Answer 1

k *= 5 is the same as k = k * 5

Answer 2

It's a shortcut equivalent of:
x *= n (same as x = x * n)

Answer 3

They are shorthand:

a += b // a += 7

is the same as

a = a + b // a = a + 7

Etc...

so

a -= b is equivalent to a = a - b
a *= b is equivalent to a = a * b
a /= b is equivalent to a = a / b