Issue using typing-extensions > 4.5.0

[ondrej-ivanko]

Hi,

when I was trying you package with one of the newest versions of FastaAPI which depends on typing-extension >=4.8.0, I ran into a typing error in your code. It applies I believe only to python version less than 3.10. There were changes to Literal which you're using in cases of some of your pydantic Models

I have to use python 3.9 along with Pydantic 1.10.x for dependency purposes. Our company cannot raise the versions of some libraries without proper testing. Is it possible on you side to create new 0.6.x patch version, which uses typing which would work on Python 3.9.

I added links to the issue in Pydantic.
pydantic/pydantic#5824
python/typing_extensions@fb37b2e
pydantic/pydantic#5821 (comment)
pydantic/pydantic#545 (comment)

for better location of error I added logs. It happens already when trying to import the Model Point

rypmaps-gateway-1  |   File "/varistar/./app/schemas/response_schemas.py", line 3, in <module>
rypmaps-gateway-1  |     from geojson_pydantic import Feature, Point
rypmaps-gateway-1  |   File "/usr/local/lib/python3.9/site-packages/geojson_pydantic/__init__.py", line 3, in <module>
rypmaps-gateway-1  |     from .features import Feature, FeatureCollection  # noqa
rypmaps-gateway-1  |   File "/usr/local/lib/python3.9/site-packages/geojson_pydantic/features.py", line 9, in <module>
rypmaps-gateway-1  |     from geojson_pydantic.geometries import Geometry, GeometryCollection
rypmaps-gateway-1  |   File "/usr/local/lib/python3.9/site-packages/geojson_pydantic/geometries.py", line 114, in <module>
rypmaps-gateway-1  |     class Point(_GeometryBase):
rypmaps-gateway-1  |   File "pydantic/main.py", line 204, in pydantic.main.ModelMetaclass.__new__
rypmaps-gateway-1  |   File "pydantic/fields.py", line 488, in pydantic.fields.ModelField.infer
rypmaps-gateway-1  |   File "pydantic/fields.py", line 419, in pydantic.fields.ModelField.__init__
rypmaps-gateway-1  |   File "pydantic/fields.py", line 534, in pydantic.fields.ModelField.prepare
rypmaps-gateway-1  |   File "pydantic/fields.py", line 638, in pydantic.fields.ModelField._type_analysis
rypmaps-gateway-1  |   File "/usr/local/lib/python3.9/typing.py", line 852, in __subclasscheck__
rypmaps-gateway-1  |     return issubclass(cls, self.__origin__)
rypmaps-gateway-1  | TypeError: issubclass() arg 1 must be a class

code:

from geojson_pydantic import FeatureCollection, Point

Thank you for your help.

[ondrej-ivanko]

A workaround is using no_type_check decorator from typing

from typing import no_type_check

from geojson_pydantic import FeatureCollection, Point
no_type_check(Point)

[vincentsarago]

@ondrej-ivanko I guess you're using geojson-pydantic 0.6

I'll be happy to review any PR patching 0.6 with a fix 🙏