Setting a default value for ZoneInfo does not work

[ac3673]

When setting a default value for ZoneInfo a different timezone is used.

Python 3.12.1 (main, Jan  8 2024, 05:53:39) [Clang 17.0.6 ] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pydantic_settings
>>> from zoneinfo import ZoneInfo
>>> from pydantic_settings import BaseSettings
>>> class Test(BaseSettings):
...     tz: ZoneInfo = ZoneInfo("Europe/London")
... 
>>> Test()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/acuthbert2/dev/ves/scripts/.venv/lib/python3.12/site-packages/pydantic_settings/main.py", line 167, in __init__
    super().__init__(
  File "/home/acuthbert2/dev/ves/scripts/.venv/lib/python3.12/site-packages/pydantic/main.py", line 212, in __init__
    validated_self = self.__pydantic_validator__.validate_python(data, self_instance=self)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
pydantic_core._pydantic_core.ValidationError: 1 validation error for Test
tz
  invalid timezone: :Asia/Shanghai [type=zoneinfo_str, input_value=':Asia/Shanghai', input_type=str]
>>> pydantic_settings.__version__
'2.6.1'

• pydantic-settings version: 2.6.1
• python version: 3.12.1
• platform: DISTRIB_ID=Ubuntu
  DISTRIB_RELEASE=22.04
  DISTRIB_CODENAME=jammy
  DISTRIB_DESCRIPTION="Ubuntu 22.04.2 LTS"

[hramezani]

It seems that you have a tz env variable with the value :Asia/Shanghai. The :Asia/Shanghai is an invalid timezone(because of : at the beginning), which is the reason for the error.

[ac3673]

@hramezani I don't (or not that I know).

>>> import os
>>> os.getenv("tz")
>>>

However naming the variable something other than tz does work correctly, so it does look to be something to do with my specific environment rather than a bug. Thanks

[ac3673]

Likely due to my environment, closing.