Use the Python code in cspProblem .py, which defines a CSP with variables, domains and con- straints. Include costs to CSPs by extending this class to contain a cost and a heuristic function h to work out the Expense. Also use the code in cspConsistency .py. This code implements the https://bookmarkbells.com/story12781949/an-unbiased-view-of-assignment%E4%BB%A3%E5%86%99