The docs for http2time state that "None is returned if [...] the time is outside the representable range". However, it is raising a ValueError when a year larger than datetime.MAXYEAR is provided (actually raised downstream by calendar.date()).

To reproduce:
import cookielib
print cookielib.http2time("08-Oct-3697739")

Expected Result:
Should return None

Actual Result:
Raises ValueError: year is out of range