drop python 3.8

.github/workflows/ci.yml

@@ -12,11 +12,11 @@ jobs:
       FLAIR_CACHE_ROOT: ./cache/flair
     steps:
       - uses: actions/checkout@v3
-      - name: Set up Python 3.8
+      - name: Set up Python 3.9
         id: setup-python
         uses: actions/setup-python@v4
         with:
-          python-version: 3.8
+          python-version: 3.9
       - name: Install Torch cpu
         run: pip install torch --index-url https://download.pytorch.org/whl/cpu
       - name: Install Flair dependencies

.github/workflows/publish-docs.yml

@@ -10,7 +10,7 @@ jobs:
     name: Build the docs using Sphinx and push to gh-pages
     runs-on: ubuntu-latest
     env:
-      python-version: 3.8
+      python-version: 3.9
     steps:
       - name: Checkout code
         uses: actions/checkout@v3

CONTRIBUTING.md

@@ -24,8 +24,8 @@ the code should hopefully be easy.
 
 ### Setup
 
-Flair requires python-3.8 or higher. To make sure your code also runs on the oldest supported
-python version, it is recommended to use python-3.8.x for flair development.
+Flair requires python-3.9 or higher. To make sure your code also runs on the oldest supported
+python version, it is recommended to use python-3.9.x for flair development.
 
 Create a python environment of your preference and run:
 ```bash

README.md

@@ -52,7 +52,7 @@ In your favorite virtual environment, simply do:
 pip install flair
 ```
 
-Flair requires Python 3.8+. 
+Flair requires Python 3.9+. 
 
 ### Example 1: Tag Entities in Text
 

docs/contributing/local_development.md

@@ -6,8 +6,8 @@ the code should hopefully be easy.
 
 ## Setup
 
-Flair requires python-3.8 or higher. To make sure our code also runs on the oldest supported
-python version, it is recommended to use python-3.8.x for flair development.
+Flair requires python-3.9 or higher. To make sure our code also runs on the oldest supported
+python version, it is recommended to use python-3.9.x for flair development.
 
 Create a python environment of your preference and run:
 ```bash

docs/tutorial/intro.md

@@ -16,7 +16,7 @@ In your favorite virtual environment, simply do:
 pip install flair
 ```
 
-Flair requires Python 3.8+. 
+Flair requires Python 3.9+. 
 
 ## Example 1: Tag Entities in Text
 

flair/class_utils.py

@@ -1,20 +1,21 @@
 import importlib
 import inspect
+from collections.abc import Iterable
 from types import ModuleType
-from typing import Any, Iterable, List, Optional, Type, TypeVar, Union, overload
+from typing import Any, Optional, TypeVar, Union, overload
 
 T = TypeVar("T")
 
 
-def get_non_abstract_subclasses(cls: Type[T]) -> Iterable[Type[T]]:
+def get_non_abstract_subclasses(cls: type[T]) -> Iterable[type[T]]:
     for subclass in cls.__subclasses__():
         yield from get_non_abstract_subclasses(subclass)
         if inspect.isabstract(subclass):
             continue
         yield subclass
 
 
-def get_state_subclass_by_name(cls: Type[T], cls_name: Optional[str]) -> Type[T]:
+def get_state_subclass_by_name(cls: type[T], cls_name: Optional[str]) -> type[T]:
     for sub_cls in get_non_abstract_subclasses(cls):
         if sub_cls.__name__ == cls_name:
             return sub_cls
@@ -26,12 +27,12 @@ def lazy_import(group: str, module: str, first_symbol: None) -> ModuleType: ...
 
 
 @overload
-def lazy_import(group: str, module: str, first_symbol: str, *symbols: str) -> List[Any]: ...
+def lazy_import(group: str, module: str, first_symbol: str, *symbols: str) -> list[Any]: ...
 
 
 def lazy_import(
     group: str, module: str, first_symbol: Optional[str] = None, *symbols: str
-) -> Union[List[Any], ModuleType]:
+) -> Union[list[Any], ModuleType]:
     try:
         imported_module = importlib.import_module(module)
     except ImportError: