When I'm typing the last line, VSCode is expected to hint me the type of parameter should be int,

Using Python 3.12.3

When your script was executed. I received an error message that said,

line 19, in <module> printer = Foo2 if check_equal else Foo NameError: name 'check_equal' is not defined.

check_equal: bool should be check_equa l= bool

a.print('int')

Output:

int 3