On 2014-02-13, Zachary Ware <zachary.ware+pyl...@gmail.com> wrote: > In a fit of curiosity, I did some timings: > > 'and'ed indexing: > > C:\tmp>py -m timeit -s "key = '<test>'" "key[0] == '<' and key[-1] == '>'" > 1000000 loops, best of 3: 0.35 usec per loop > > C:\tmp>py -m timeit -s "key = '<test'" "key[0] == '<' and key[-1] == '>'" > 1000000 loops, best of 3: 0.398 usec per loop > > C:\tmp>py -m timeit -s "key = 'test>'" "key[0] == '<' and key[-1] == '>'" > 1000000 loops, best of 3: 0.188 usec per loop > > C:\tmp>py -m timeit -s "key = 'test'" "key[0] == '<' and key[-1] == '>'" > 10000000 loops, best of 3: 0.211 usec per loop > > C:\tmp>py -m timeit -s "key = ''" "key[0] == '<' and key[-1] == '>'" > Traceback (most recent call last): > File "P:\Python34\lib\timeit.py", line 292, in main > x = t.timeit(number) > File "P:\Python34\lib\timeit.py", line 178, in timeit > timing = self.inner(it, self.timer) > File "<timeit-src>", line 6, in inner > key[0] == '<' and key[-1] == '>' > IndexError: string index out of range
The corrected version key and key[0] == '<' and key[-1] == '>' probably still wins the Pretty Unimportant Olympics. -- Neil Cerutti -- https://mail.python.org/mailman/listinfo/python-list
