Zachary Ware added the comment:
I think the minimum bound for dt could stand to be relaxed very slightly,
here's some results from my 64-bit Win7 box running 32-bit Python:
3.4.0b1 (default:eae6966d9734+, Dec 21 2013, 15:47:14) [MSC v.1600 32 bit
(Intel)]
sys.getwindowsversion(major=6, minor=1, build=7601, platform=2,
service_pack='Service Pack 1')
Running:
import time
import sys
print(sys.version)
print(sys.getwindowsversion())
with open(__file__) as file:
print('Running:')
print(file.read())
for i in range(10):
# copied from test_monotonic, with regular assert and added prints
t1 = time.monotonic()
time.sleep(0.5)
t2 = time.monotonic()
dt = t2 - t1
assert t2 > t1
print(i, t1, t2, dt, sep='\t')
print(' assertion', 'passed' if 0.5 <= dt <= 1.0 else 'failed')
0 243323.54200000002 243324.041 0.4989999999816064
assertion failed
1 243324.041 243324.54 0.4990000000107102
assertion failed
2 243324.54 243325.03900000002 0.4990000000107102
assertion failed
3 243325.03900000002 243325.53900000002 0.5
assertion passed
4 243325.53900000002 243326.038 0.4989999999816064
assertion failed
5 243326.038 243326.537 0.4990000000107102
assertion failed
6 243326.537 243327.036 0.4989999999816064
assertion failed
7 243327.036 243327.535 0.4990000000107102
assertion failed
8 243327.535 243328.035 0.5
assertion passed
9 243328.035 243328.534 0.4990000000107102
assertion failed
I suspect there's some rounding going on somewhere, making dt usually about
0.499, not 0.5. Relaxing the condition to '0.498 < dt < 1.0' should be
adequate, since I don't think a thousandth of a second only part of the time is
enough to say there's a behavior issue.
I haven't seen this fail on any buildbots, but I suspect most of them are just
loaded a bit heavier than my laptop is when I see this.
----------
nosy: +zach.ware
_______________________________________
Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue19999>
_______________________________________
_______________________________________________
Python-bugs-list mailing list
Unsubscribe:
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
