Delattr On Class Instance Produces Unexpected Attributeerror

I have the following abstract base class for configuration implementation (cut short): class Config(): ''' Configuration file binding ''' def __init__(self, path

Solution 1:

When defining the subclass __Sysconfig(Config), python obviously binds the attributes to the class. The instance self can access them, but not delete them.

Changing delattr(self, field) to delattr(self.__class__, field) did the trick!