feat: support new 3.10 union

README.md

@@ -13,6 +13,9 @@ With this library, you can leverage `typing` types at runtime to do that!
 # Check if `my_list` is a list of integers
 isinstancex(my_list, [int])  # shortcut for typing.List[int]
 
+# Check if `my_list` has only numbers (3.10 syntax)
+isinstancex([3, 4, 3.14], list[int | float])
+
 # Check if `my_list` starts with 2 integers and then has only strings
 isinstancex(my_list, [int, int, str, ...])  # shortcut for Listx[int, int, str, ...] (see extra types)
 

tests/test_main.py

@@ -1,3 +1,4 @@
+import sys
 from collections import ChainMap, Counter
 
 import pytest
@@ -202,6 +203,11 @@ def test_isinstancex_union(obj, tp, expected):
     assert isinstancex(obj, tp) is expected
 
 
+@pytest.mark.skipif(sys.version_info < (3, 10), reason="need python 3.10")
+def test_isinstancex_union_310():
+    assert isinstancex([3, 4, 3.14], list[int | float])
+
+
 @pytest.mark.parametrize(
     "obj,tp,expected",
     [

typingx/main.py

@@ -1,4 +1,5 @@
 import collections.abc
+import sys
 from typing import Any, Callable, Dict, List, Set, Union, cast
 
 from .types import Listx, Tuplex
@@ -21,6 +22,12 @@
 
 TYPED_DICT_EXTRA_KEY = "__extra__"
 NONE_TYPES = (None, NoneType, Literal[None])
+if sys.version_info < (3, 10):
+    UNION_TYPES = (Union,)
+else:
+    import types
+
+    UNION_TYPES = (Union, types.Union)
 
 
 def _isinstancex(obj: Any, tp: TypeLike) -> bool:
@@ -52,8 +59,8 @@ def _isinstancex(obj: Any, tp: TypeLike) -> bool:
         elif isinstance(tp, list):
             return _isinstancex(obj, Listx[tuple(tp)])
 
-    # e.g. Union[str, int]
-    if origin is Union:
+    # e.g. Union[str, int] (or str|int in 3.10)
+    if origin in UNION_TYPES:
         return isinstancex(obj, get_args(tp))
 
     # e.g. Dict[str, int]