def main():
A1 = fset.LeftSkewTrapezoid('A1', (0, 0), (1, 1), (4, 0))
A2 = fset.Triangle('A2', (2, 0), (5, 1), (8, 0))
A3 = fset.RightSkewTrapezoid('A3', (6, 0), (8, 1), (10, 0))
rule1 = 'IF x IS A1 THEN y IS B1'
rule2 = 'IF x IS A2 THEN y IS B2'
rule3 = 'IF x IS A3 THEN y IS B3'
fsets = [A1, A2, A3]
rules = [rule1, rule2, rule3]
inferencer = Inferencer()
inferencer.add_fsets(fsets)
inferencer.add_rules(rules)
input_test = {'x': 7}
print inferencer.evaluate(input_test)
