[larkeith]

`datetime.fromisoformat()`, as of 3.7 :D

Though `dateutil` is still recommended for most cases.

[wwright]

That parses a subset and is only guaranteed to be compatible with Python’s “.toisoformat()”. (I imagine it would be backwards compatible to expand it to cover all of ISO8601 and I can’t tell why they haven’t.)

[londt8]

ISO8601 is quite large, they probably don't want to ship that big standard library modules which would parse 100% of ISO8601