In general class members are public.Which members are private?

Question

Which members are protected ?
Which members are hidden ?

Answer 1

There is no privacy in Python.

The only and common way is to 'tell' users to not use something by starting the name with _.

Answer 2

There is no privacy in python ✓✓✓

Answer 3

class C:
a = 1
_b = 2

_b is not private, but the user knows they are not supposed to access _b.

Answer 4

I couldn't get it