Looks like MRO is unusable about vue.py

[stefanhoelzl]

Thanks for reporting!

TL;DR
get the latest changes on master and make a slight modification to your code

from vue import *

class Parent(VueComponent):
    @computed
    def my_computed(self):
        return 'Parent'

    template = '<div>Hello {{my_computed}}!</div>'

class Child(Parent):
    @computed
    def my_computed(self):
        value = super().my_computed()
        return f'Child of {value}'

Child('#app')

---

There are actually two bugs when using f'Child of {super().my_computed()}'

1. the one you discovered with the __mro__ one you discovered
   This seems to be a bug in the brython version used by vue.py (3.8.9), when using super() within a f-string.

class A:
    def foo(self):
       return "A"

class B(A):
    def foo(self):
        return f"{super().foo()}"

raises the same exception
but this works

class A:
    def foo(self):
       return "A"

class B(A):
    def foo(self):
        value = super().foo()
        return f"{value}"

the latest brython version 3.11.1 seems to have fixed this. But there is some work required on vue.py to be able to bump the version.

2. computed properties where not callable in vue.py
   for this issue I just push a fix to master

[meteozond]

Wow this is super!