%f and %z are not standardized by C89 and therefore not always available. They fall under the clause "Additional directives may be supported on certain platforms, but only the ones listed here have a meaning standardized by ANSI C." which is noted for time.strftime(). datetime.strftime() implements %z (and %f from 2.6) separately, therefore it is available there. I've added a bit of clarification in r68726.
History
Date
User
Action
Args
2022-04-11 14:56:44
admin
set
github: 49173
2009-01-18 14:42:36
georg.brandl
set
status: open -> closedresolution: fixedmessages: +