fix: Adds support for python 3.9

Author: thiagopena

src/kubedantic/extractor.py

@@ -1,15 +1,15 @@
 import json
 import logging
 from pathlib import Path
-from typing import Any, Generator, Optional, Union
+from typing import Any, Dict, Generator, List, Optional, Union
 
 from kubernetes import client, config
 from pydantic import BaseModel, Field
 
 logger = logging.getLogger(__name__)
 
 
-API_PATH_BY_TITLE: dict[str, Path] = {
+API_PATH_BY_TITLE: Dict[str, Path] = {
     "Kubernetes": Path("k8s"),  # Kubernetes API
     "Kubernetes CRD Swagger": Path("crd"),  # CustomResourceDefinition API
 }
@@ -29,7 +29,7 @@ def path(self) -> Path:
         return API_PATH_BY_TITLE.get(self.title, Path(""))
 
     @classmethod
-    def from_spec(cls, spec: dict[str, Any]) -> "SchemaMetadata":
+    def from_spec(cls, spec: Dict[str, Any]) -> "SchemaMetadata":
         return cls(
             openapi=spec["openapi"],
             title=spec["info"]["title"],
@@ -38,10 +38,10 @@ def from_spec(cls, spec: dict[str, Any]) -> "SchemaMetadata":
 
 
 class Schema(BaseModel):
-    openapi_schema: dict[str, Any] = Field(default_factory=dict)
+    openapi_schema: Dict[str, Any] = Field(default_factory=dict)
     metadata: SchemaMetadata
 
-    def to_openapi(self) -> dict[str, Any]:
+    def to_openapi(self) -> Dict[str, Any]:
         return {
             "openapi": self.metadata.openapi,
             "info": {"title": self.metadata.title, "version": self.metadata.version},
@@ -66,7 +66,7 @@ def _should_skip_path(self, path: str) -> bool:
         stem = Path(path.split("?")[0]).stem
         return not stem.startswith("v") or stem == "version"
 
-    def _add_to_schema_by_path(self, spec: dict[str, Any]):
+    def _add_to_schema_by_path(self, spec: Dict[str, Any]):
         spec_metadata = SchemaMetadata.from_spec(spec)
 
         if not spec_metadata.is_supported:
@@ -129,7 +129,7 @@ def _load_specs(self) -> Generator[Path, None, None]:
             for path, schemas in self.schema_by_path.items()
         )
 
-    def extract(self) -> list[Path]:
+    def extract(self) -> List[Path]:
         """
         Extracts the Kubernetes OpenAPI specs and writes them to the output path.
 

src/kubedantic/main.py

@@ -2,6 +2,7 @@
 import logging
 import sys
 from pathlib import Path
+from typing import Tuple
 
 from datamodel_code_generator.parser.base import Result
 
@@ -38,7 +39,7 @@ def _get_options(args):
     return parser.parse_args(args)
 
 
-def _write_result(path: tuple[str, ...], result: Result, output_path: Path):
+def _write_result(path: Tuple[str, ...], result: Result, output_path: Path):
     output_file = output_path.joinpath(*path[1:]).with_suffix(".py")
     logging.info("Generating %s", output_file)
     output_file.parent.mkdir(parents=True, exist_ok=True)

src/kubedantic/parser.py

@@ -1,7 +1,7 @@
 import logging
 import sys
 from pathlib import Path
-from typing import Any, Optional, Union
+from typing import Any, List, Optional, Tuple, Union
 from urllib.parse import ParseResult
 
 from datamodel_code_generator.format import PythonVersion
@@ -20,7 +20,7 @@ def _get_python_version() -> PythonVersion:
 
 
 class K8sSchemaObject(JsonSchemaObject):
-    def _get_group_version_kind(self) -> tuple[str, str, str]:
+    def _get_group_version_kind(self) -> Tuple[str, str, str]:
         """
         Returns the group, version and kind of the object, if available.
 
@@ -102,7 +102,7 @@ class K8sOpenAPIParser(OpenAPIParser):
     SCHEMA_OBJECT_TYPE = K8sSchemaObject
 
     def __init__(
-        self, source: Union[str, Path, list[Path], ParseResult], **kwargs: Any
+        self, source: Union[str, Path, List[Path], ParseResult], **kwargs: Any
     ):
         target_python_version = kwargs.pop(
             "target_python_version", _get_python_version()

tests/test_parser.py

@@ -1,4 +1,5 @@
 from pathlib import Path
+from typing import Tuple
 from unittest import TestCase
 
 import pytest
@@ -19,7 +20,7 @@ def setUp(self):
             K8sOpenAPIExtractor(output_path=self.specs_path).extract()
         )
 
-    def _compare_with_expected(self, name: tuple[str, ...], result: str):
+    def _compare_with_expected(self, name: Tuple[str, ...], result: str):
         expected_file = self.expected_path.joinpath(*name[4:]).with_suffix(".py")
 
         with open(expected_file, "r") as f: