Serializer for timedelta

[davetapley]

Thoughts on including a (de)serializer for timedelta out of the box?

As I hinted on #436 I'm doing it with isodate:

from isodate import parse_duration, duration_isoformat
from serde import field

def field_timedelta():
    return field(
        serializer=lambda d: None if d is None else duration_isoformat(d),
        deserializer=lambda s: None if s is None else parse_duration(s)
    )

... but I feel like it's sufficiently ISO that it could be included?

---

Related:

• pydantic implements it with an f-string and two regexes.

• One day it might be in Python via:

  • isoformat() / fromisoformat() for datetime.timedelta python/cpython#86260

[yukinarit]

Hi @davetapley
timedelta could be included, but I prefer not using third party package just for this. Would you want to try contributing?

[yukinarit]

FYI @davetapley
Although timedelta should probably be implemented in pyserde itself, I fount it a good opportunity to experiment capability of new global custom (de)serializer. I published pyserde-timedelta package in PyPI. Please take a look if it's interesting for you.