`self.` is not required to access class variables inside the class

[jakebailey]

self. should be required to access the instance variable. This is likely happening because the variable is "in" the scope.

Notably, this isn't just a completion thing, and affects the analysis:

But the tooltip displayed is different in the self. case:

Also, for class variables:

val = 1234

class Foo:
    val = "str"

    def foo(self):
        print(val)


Foo().foo()

val in foo is 1234, not "str", but:

This also affects the completion list:

self.val is the right way to access the one in the class.

[MikhailArkhipov]

Basically same as #1233

[MikhailArkhipov]

Affects persistence. In

from typing import Optional
class A: ...

class B:
    def __init__(self, A: Optional[A]):
        self.name = name

    @property
    def A(self) -> int:

type parameter of __init__ ends up being property.