Programming, Python, Algorithms, Python Programming, Computer Science.
online at https://github.com/davecom/ClassicComputerScienceProblemsInPython/tree/master/Chapter3 Listing 1 csp.py from typing import Generic, TypeVar, Dict, List, Optional from abc import ABC, abstractmethod V = TypeVar('V') # variable type D = TypeVar('D') # domain type # Base class for all