`not any` vs `all(genexp)` speed test

#!/usr/bin/env python3

''' Compare the speed of `not any` vs `all(genexp)`

    See http://stackoverflow.com/a/38024771/4014959\
    http://pastebin.com/rvVBz0Zs

    Written by PM 2Ring 2016.06.26
'''

from timeit import Timer
import dis

count = [0] * 256

commands = {
    'any': 'not any(count)',
    'all_genexp': 'all(not c for c in count)',
}

def time_test(loops, reps):
    ''' Print timing stats for all the commands '''
    timings = []
    for name, cmd in commands.items():
        setup = 'from __main__ import count'
        t = Timer(cmd, setup)
        result = t.repeat(reps, loops)
        result.sort()
        timings.append((result, name))

    timings.sort()
    for result, name in timings:
        print('{:10} {}'.format(name, result))

    #Find the ratio of slowest / fastest
    tlo, thi = [timings[i][0][0] for i in (0, -1)]
    print('ratio: {:f}'.format(thi / tlo))

def disassemble():
    ''' Show the bytecode of all the commands '''
    for name, cmd in commands.items():
        print(name)
        dis.dis(cmd)
        print()

def verify():
    ''' Verify that all commands give the same result '''
    results = [eval(cmd) for cmd in commands.values()]
    #print(results)
    r0 = results[0]
    print(all(r == r0 for r in results[1:]))

#disassemble()

# Do the tests.
reps = 5
loops = 2000

#The first test is with no element of `count` set.
index = None
for _ in range(10):
    print('\nindex = {}, loops = {}'.format(index, loops))
    verify()
    time_test(loops, reps)

    if index is None:
        index = len(count) - 1
    else:
        index = (index - 1) // 2
        if index > 7:
            loops *= 2

    count[index] = 1