Python 技巧

1import time
2
3btime = time.time()
4a = [x**3 for x in range(10000000)]
5etime = time.time()
6print("used {:.5}s" % (etime-btime))

1data = (i**2 for i in range(100000))
2dlst = list(data)
3dset = set(data)
4
51234 in dlst
61234 in dset