def forward_checking(csp, var, value, assignment, removals):
    "Prune neighbor values inconsistent with var=value."
    for B in csp.neighbors[var]:
        if B not in assignment:
            for b in csp.curr_domains[B][:]:
                if not csp.constraints(var, value, B, b):
                    csp.prune(B, b, removals)
            if not csp.curr_domains[B]:
                return False
    return True
def forward_checking(csp, var, value, assignment, removals):
    "Prune neighbor values inconsistent with var=value."
    for B in csp.neighbors[var]:
        if B not in assignment:
            for b in csp.curr_domains[B][:]:
                if not csp.constraints(var, value, B, b):
                    csp.prune(B, b, removals)
            if not csp.curr_domains[B]:
                return False
    return True
def forward_checking ( csp , var , value , assignment , removals ) : for B in csp . neighbors [ var ] : if B not in assignment : for b in csp . curr_domains [ B ] [ : ] : if not csp . constraints ( var , value , B , b ) : csp . prune ( B , b , removals ) if not csp . curr_domains [ B ] : return False return True
Prune neighbor values inconsistent with var=value.
Prune neighbor values inconsistent with var = value .