# -- coding: utf-8 --
import cProfile
import pstats

left_column_width = 40
loop_range = range(10000000)

class A:
    def __init__(self):
        self.value = 0

    @property
    def x(self):
        value = self.value
        self.value += 1
        return value

class B:
    def __init__(self, y):
        self.y = y

def test1():
    for z in loop_range:
        pass

def test2():
    b = B(A())
    for z in loop_range:
        if b.y.x:
            pass

def test3():
    b = B(A())
    a = b.y
    for z in loop_range:
        if a.x:
            pass

test1_profile = cProfile.Profile()
test1_profile.runcall(test1)
test1_profile.print_stats(sort='cumtime')

test2_profile = cProfile.Profile()
test2_profile.runcall(test2)
test2_profile.print_stats(sort='cumtime')

test3_profile = cProfile.Profile()
test3_profile.runcall(test3)
test3_profile.print_stats(sort='cumtime')

print('number of loops:'.ljust(left_column_width, ' '), len(loop_range), '\n')

print("pass:".ljust(left_column_width, ' '), pstats.Stats(test1_profile).total_tt)
print("if b.y.x:".ljust(left_column_width, ' '), pstats.Stats(test2_profile).total_tt)
print("if a.x:".ljust(left_column_width, ' '), pstats.Stats(test3_profile).total_tt, '\n')