Incompatible ISO8601 format returned by the API

[jooola]

Bug Report

Current Behavior

The floating IP API documentation is using the following ISO8601 format: 2016-01-30T23:55:00+00:00, but the API currently returns a different ISO8601 format: 2023-06-29T15:37:22Z.

We recently removed the python-dateutil package because we assumed the API will return the format in the documentation (without the Z), and use datetime.datetime.fromisoformat to parse the datetime.

Python <3.11 does not support parsing the 2023-06-29T15:37:22Z ISO8601 format, and this breaks our client for all version of Python <3.11.

Input Code

• REPL or Repo link if applicable:

On python 3.9

>>> from datetime import datetime
>>> datetime.fromisoformat("2023-06-29T15:37:22Z")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: Invalid isoformat string: '2023-06-29T15:37:22Z'
>>> datetime.fromisoformat("2016-01-30T23:55:00+00:00")
datetime.datetime(2016, 1, 30, 23, 55, tzinfo=datetime.timezone.utc)

Expected behavior/code

The client should be able to parse the ISO8601 format.

Environment

• Python Version: Python 3.9
• Hcloud-Python Version: c821dbe

Possible Solution

• Change the API to return a ISO8601 format parsable by python <3.11.
• Implement a small wrapper to replace the Z with +00:00.
• Revert feat: remove python-dateutil dependency #221, but we probably don't want that.

Additional context/Screenshots

• feat: remove python-dateutil dependency #221
• https://dev.azure.com/ansible/hetzner.hcloud/_build/results?buildId=82132&view=logs&j=fdb818b8-39d8-529a-d9da-324e304604bc&t=2d52cce2-88ce-5057-da88-145e92cee00f&l=1529

[jooola]

The API is also returning ISO8601 datetime with microseconds precision, some of those microseconds precision (depending on the precision) aren't parsable by fromisoformat for python < 3.11.

Example:
2023-06-30T15:09:46.37719+00:00

>>> from datetime import datetime, timezone
>>> datetime.fromisoformat('2023-06-30T15:09:46.37719+00:00')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: Invalid isoformat string: '2023-06-30T15:09:46.37719+00:00'
>>>