gadgets.lca

Lastest Common Ancestor of Two Classes.

pythonic_fp.gadgets.lca.latest_common_ancestor(cls1: type, cls2: type) → type | Never

Find the least upper bound in the inheritance graph of two classes.

Warning

This function can fail with a TypeError. Some error messages seen are

• multiple bases have instance lay-out conflict

• type ‘bool’ is not an acceptable base type

This happens frequently when the function is given Python builtin types.

Parameters:

• cls1 – first class

• cls2 – second class

Returns:

least common ancestor base class of cls1 and cls2

Raises:

TypeError – theoretically only from inspect.getmto