How super mixins can find metaclass child variable

use_case_get_static_var.py

class MixinsBuilder:
  """From child static variable, i'm going to build attributes"""
  
  def build_attributes(self):
    
    my_meta_var = self.???[0]
    for k, v in my_meta_var:
      if not hasattr(self, k):
        setattr(k, v)

        
class A(MixinsBuilder):
  __schmurf = dict()
  
 
class B(MixinsBuilder):
  __things = dict()