Seonggi Kim <ksg97...@gmail.com> added the comment:
Base commit : Python 3.8.0a0 (heads/master:b75d7e2435, Aug 1 2018, 10:32:28)
$ test.py
import timeit
queue_setup = '''
from collections import deque
q = deque()
start = 10**5
stop = start + 500
for i in range(0, stop):
q.append(i)
'''
code = '''
index = q.index(30, 1, stop)
assert index == 30
'''
code2 = '''
index = q.index((start >> 1) + 1, start >> 1, stop >> 1)
assert index == (start >> 1) + 1
'''
code3 = '''
index = q.index(start + 1, start, stop)
assert index == start + 1
'''
repeat = 100000
print(timeit.timeit(setup = queue_setup, stmt = code, number = repeat * 20))
print(timeit.timeit(setup = queue_setup, stmt = code2, number = repeat))
print(timeit.timeit(setup = queue_setup, stmt = code3, number = repeat))
$ ./python_cur.exe test.py
2.154346022
2.899595406
5.265440983
$ ./python_ksg.exe test.py
2.1457827320000002
0.717190736
1.9934196979999999
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<https://bugs.python.org/issue34298>
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