python: how to avoid name clash when subclass has same name?

Question

name mangling works most of the time but not when a subclass has the same name as a super class; for example if two classes in different modules m2.A extends m1.A, then m2.A.foo will hide m1.A.foo because both of them become _A__foo; is there an option to enable a "fuller" name mangling, namely, mangle class fields with a unique class identifier?

# m1.py
class C:
    def __foo(self):
        print('C1')

    def bar(self):
        self.__foo()

# main.py
from m1 import C as C1

class C(C1):
    # i mangle this for internal use within this class, not expecting it to
    # break a super class method; so i cant safely use a name even if it is
    # mangled; sad, is there a way to mangle with a guid across all classes?
    def __foo(self):
        print('CM')

C().bar()   # CM not C1

No. And honestly, you should just stick to having different names for subclasses. I've never seen this sort of thing before and it's a highly unusual use-case — juanpa.arrivillaga
@juanpa.arrivillaga it is hard to guarantee your subclass name is different from any superclass, which could lie in a deeply chained library... — Cyker

Elinx Elinx · Accepted Answer · 2019-12-30T03:43:16

The module name is designed to be a part of the namespace, I think the simplest answer of 'full name mangling' is just add the module name.

python: how to avoid name clash when subclass has same name?

2 Answers