aima/csp.py
def assign(self, var, val, assignment):
        "Assign var, and keep track of conflicts."
        oldval = assignment.get(var, None)
        if val != oldval:
            if oldval is not None: # Remove old val if there was one
                self.record_conflict(assignment, var, oldval, -1)
            self.record_conflict(assignment, var, val, +1)
            CSP.assign(self, var, val, assignment)
def assign(self, var, val, assignment):
        "Assign var, and keep track of conflicts."
        oldval = assignment.get(var, None)
        if val != oldval:
            if oldval is not None: # Remove old val if there was one
                self.record_conflict(assignment, var, oldval, -1)
            self.record_conflict(assignment, var, val, +1)
            CSP.assign(self, var, val, assignment)
Assign var, and keep track of conflicts.