refactor: ensure dve working on python 3.10

Author: georgeRobertson

pyproject.toml

@@ -9,14 +9,15 @@ packages = [
 ]
 classifiers = [
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
     "Operating System :: OS Independent",
     "Topic :: Software Development :: Libraries",
     "Typing :: Typed",
 ]
 
 [tool.poetry.dependencies]
-python = ">=3.11,<3.12"
+python = ">=3.10,<3.12"
 boto3 = "1.34.162"
 botocore = "1.34.162"
 delta-spark = "2.4.0"

src/dve/core_engine/backends/readers/xml.py

@@ -3,7 +3,14 @@
 
 import re
 from collections.abc import Collection, Iterator
-from typing import IO, Any, Optional, Union, overload
+from typing import (
+    IO,
+    Any,
+    GenericAlias,  # type: ignore
+    Optional,
+    Union,
+    overload
+)
 
 import polars as pl
 from lxml import etree  # type: ignore
@@ -55,7 +62,7 @@ def create_template_row(schema: type[BaseModel]) -> dict[str, Any]:
             template_row[field_name] = None
             continue
 
-        if isinstance(field_type, type):
+        if isinstance(field_type, type) and not isinstance(field_type, GenericAlias):
             if issubclass(field_type, BaseModel):
                 template_row[field_name] = create_template_row(field_type)
                 continue

src/dve/core_engine/backends/utilities.py

@@ -5,6 +5,7 @@
 from datetime import date, datetime
 from decimal import Decimal
 from typing import Any, ClassVar, Union
+from typing import GenericAlias  # type: ignore
 
 import polars as pl  # type: ignore
 from polars.datatypes.classes import DataTypeClass as PolarsType
@@ -36,9 +37,9 @@
 """A mapping of Python types to the equivalent Polars types."""
 
 
-def stringify_type(type_: type) -> type:
+def stringify_type(type_: Union[type, GenericAlias]) -> type:
     """Stringify an individual type."""
-    if isinstance(type_, type):  # A model, return the contents.
+    if isinstance(type_, type) and not isinstance(type_, GenericAlias):  # A model, return the contents.  # pylint: disable=C0301
         if issubclass(type_, BaseModel):
             return stringify_model(type_)