Why -= *= is not valid for string and string

Answer 1

That's not a logical question. You cannot multiply or substract strings. You can just add strings

Answer 2

Python is not in my skills but you cant multiplay strings.

Answer 3

Cuz you simply cannot multiply or deduct strings. However you can use concatenation on strings by using + symbol.

Answer 4

it ia not logical multiply string or substract string.

you can multiply win int since it logical to say take my string and multiply it twice and etc