On 28/07/2022 10:54, Ben Hirsig wrote:
Hi, I noticed this when using the requests library in the response.elapsed
object (type timedelta). Tested using the standard datetime library alone
with the example displayed on
https://docs.python.org/3/library/datetime.html#examples-of-usage-timedelta
It appears as though the timedelta object recursively adds its own
attributes (min, max, resolution) as further timedelta objects. I’m not
sure how deep they go, but presumably hitting the recursion limit.
from datetime import timedelta
year = timedelta(days=365)
print(year.max)
999999999 days, 23:59:59.999999
print(year.max.min.max.resolution.max.min)
-999999999 days, 0:00:00
I’m using 3.10.3
It's not recursion, it's a reference cycle. In fact, more than one:
>>> from datetime import timedelta
>>> year = timedelta(days=365)
>>> type(year)
<class 'datetime.timedelta'>
>>> type(year.max)
<class 'datetime.timedelta'>
>>> year.max is year.max.max
True
>>> type(year.min)
<class 'datetime.timedelta'>
>>> year.min is year.min.min
True
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