Fix typing for Python <3.11

magento/client.py

@@ -1163,7 +1163,7 @@ def get_source_items(self, source_code: Optional[str] = None, sku: Optional[str]
 
         return self.get_paginated("/V1/inventory/source-items", query=query, limit=limit, **kwargs)
 
-    def save_source_items(self, source_items: Sequence[SourceItem | SourceItemIn], **kwargs):
+    def save_source_items(self, source_items: Sequence[Union[SourceItem, SourceItemIn]], **kwargs):
         """Save a sequence of source-items. Return None if the sequence is empty.
 
         :param source_items:
@@ -1173,7 +1173,7 @@ def save_source_items(self, source_items: Sequence[SourceItem | SourceItemIn], *
             return None
         return self.post_json_api("/V1/inventory/source-items", json={"sourceItems": source_items}, **kwargs)
 
-    def delete_source_items(self, source_items: Iterable[SourceItem | SourceItemIn], **kwargs):
+    def delete_source_items(self, source_items: Iterable[Union[SourceItem, SourceItemIn]], **kwargs):
         """Delete a sequence of source-items. Only the SKU and the source_code are used.
 
         Note: Magento returns an error if this is called with empty source_items.

magento/types.py

@@ -1,7 +1,13 @@
-from typing import Union, TypedDict, NotRequired
+import sys
+from typing import Union, TypedDict
 
 from api_session import JSONDict
 
+if sys.version_info >= (3, 11):
+    from typing import NotRequired
+else:
+    from typing_extensions import NotRequired
+
 __all__ = (
     'Category',
     'Customer',

pyproject.toml

@@ -27,6 +27,7 @@ api-session = "^1.4.2"
 # https://github.com/jacopok/mlgw_bns/commit/50e82ad2e218873d1b3a8732b6cbeb5f692dd14c
 Sphinx = { version = "^4.4.0", optional = true }
 sphinx-rtd-theme = { version = "^1.0.0", optional = true }
+typing-extensions = { version = "*", python = "<3.11" }
 
 [tool.poetry.group.dev.dependencies]
 mypy = "^1"