Returns a string representation of this duration using
a long unit name without padding.

The unit is determined by `unit_for_as_string`, preferring the
largest unit whose integer part still contains at least two digits.

The representation is not exact. Fractional parts are omitted.

Example:

0.099dev (GIT hash 02118e9cbed77f3897084a4a507da3f11ac8881e)

last changed: 2026-09-02

as_string_long

time.duration.as_string_long