Tests for Python performance: ht

from timeit import Timerimport datetime# Method returning a generatorclass A(object):  def __iter__(self):    counter = 0    while True:      counter += 1      yield counter# Custom iterator classclass B(object):  def __init__(self):    self.counter = 0  def __iter__(self):    return self  def next(self):    self.counter += 1    return self.counter# B with slotsclass Bs(object):  __slots__ = ['counter']  def __init__(self):    self.counter = 0  def __iter__(self):    return self  def next(self):    self.counter += 1    return self.counter# Comment from the articleclass C(object):    def __iter__(self):        self.counter = 0        while True:            yield self.counter            self.counter += 1    def skipto(self, n):        self.counter = n# C with slotsclass Cs(object):    __slots__ = ['counter']    def __iter__(self):        self.counter = 0        while True:            yield self.counter            self.counter += 1    def skipto(self, n):        self.counter = nif __name__ == '__main__':    print "Test A:"    print Timer("cnt.next()", "from gaap import A; cnt = iter(A())").repeat(3, 100000)    print "Test B:"    print Timer("cnt.next()", "from gaap import B; cnt = iter(B())").repeat(3, 100000)    print "Test Bs:"    print Timer("cnt.next()", "from gaap import Bs; cnt = iter(Bs())").repeat(3, 100000)    print "Test C:"    print Timer("cnt.next()", "from gaap import C; cnt = iter(C())").repeat(3, 100000)    print "Test Cs:"    print Timer("cnt.next()", "from gaap import Cs; cnt = iter(Cs())").repeat(3, 100000)