A list item field with value 'PT' being converted to Datetime object

Describe the bug

I am trying to iterate through a SharePoint list entries/rows for further processing:
...
list = await client.sites.by_site_id(site_id).lists.by_list_id(list_id).items.get(request_configuration=request_config)

rows = []
for item_id in list.value:
fields = item_id['fields']
rows.append(fields.additional_data.get("code")) # test
rows

but when text/string field have value 'PT' it is retrieved as a datetime (exactly: "datetime.timedelta(0)"). It makes my code useless for keeping for example 'Country Code' as list's field. I have seen similar issue before with 4-digit strings, so maybe it is related.

Please, take a moment to look at this.

here some screenshots:

list in SP (just field 'code' and its values) :

and my code results:

Expected behavior

Expected behavior would be to display 'code' the same way as it is in SharePoint list, means:
PT
PTA
..

How to reproduce

To reproduce please just create new list with text field. Then add value 'PT' to this field and try to use await client.sites.by_site_id(site_id).lists.by_list_id(list_id).items.get(request_configuration=request_config) for entried reading.

SDK Version

1.40.0

Latest version known to work for scenario above?

No response

Known Workarounds

No response

Debug output

</details>


### Configuration

_No response_

### Other information

_No response_

Commencez par le chemin du Python SDK utilisé par await ...items.get(...) et suivez la désérialisation de la valeur du champ de la liste SharePoint. Reproduisez le cas avec un champ texte contenant "PT" et ajoutez un test de régression ciblé ; c’est terminé lorsque la valeur reste la chaîne "PT" au lieu de devenir datetime.timedelta(0).