fab31

ITERS=10000000AVERAGE=3def bench(fn):    import time    records = []    for _ in range(AVERAGE):        t = time.time()        fn()        records.append( time.time() - t )    print fn.__name__, sum(records) / float(len(records))def outter():    var = 'pika'    for _ in xrange(ITERS):        var + ''def inner():    for _ in xrange(ITERS):        'pika' + ''for n in range(3):    bench(outter)    bench(inner)