Re: [Python-ideas] Length hinting and preallocation for container types

Am 05.03.2013 18:10, schrieb Antoine Pitrou:

So how about benchmark numbers?

The speedup is smallish: $ ./python -m timeit -n1000 "l = []" "l.__preallocate__(10000)" "app = l.append" "for i in range(10000): app(i)" "l.__shrink__()" 1000 loops, best of 3: 3.68 msec per loop $ ./python -m timeit -n1000 "l = []" "app = l.append" "for i in range(10000): app(i)" 1000 loops, best of 3: 3.75 msec per loop