Improve django.template (#210)

- `django.template.loader.get_template` returns `django.template.base.Template`.
- `django.template.loader.select_template` returns `django.template.base.Template`.
- `django.template.utils.EngineHandler.__iter__` returns an iterator of `django.template.backends.base.BaseEngine`.
- `django.template.utils.get_app_template_dirs` returns a tuple of `pathlib.Path`.

django-stubs/template/loader.pyi

@@ -1,16 +1,17 @@
 from typing import Any
 
 from django.http.request import HttpRequest
+from django.template.base import Template
 from django.template.exceptions import (  # noqa: F401
     TemplateDoesNotExist as TemplateDoesNotExist,
 )
 
 from . import engines as engines  # noqa: F401
 
-def get_template(template_name: str, using: str | None = ...) -> Any: ...
+def get_template(template_name: str, using: str | None = ...) -> Template: ...
 def select_template(
     template_name_list: list[str] | str, using: str | None = ...
-) -> Any: ...
+) -> Template: ...
 def render_to_string(
     template_name: list[str] | str,
     context: dict[str, Any] | None = ...,

django-stubs/template/utils.pyi

@@ -1,4 +1,5 @@
-import collections
+from collections.abc import Iterator
+from pathlib import Path
 from typing import Any
 
 from django.core.exceptions import ImproperlyConfigured
@@ -7,10 +8,11 @@ from django.template.backends.base import BaseEngine
 class InvalidTemplateEngineError(ImproperlyConfigured): ...
 
 class EngineHandler:
-    templates: collections.OrderedDict[Any, Any]
     def __init__(self, templates: list[dict[str, Any]] = ...) -> None: ...
+    @property
+    def templates(self) -> dict[str, dict[str, Any]]: ...
     def __getitem__(self, alias: str) -> BaseEngine: ...
-    def __iter__(self) -> Any: ...
+    def __iter__(self) -> Iterator[BaseEngine]: ...
     def all(self) -> list[BaseEngine]: ...
 
-def get_app_template_dirs(dirname: str) -> tuple[Any, ...]: ...
+def get_app_template_dirs(dirname: str) -> tuple[Path, ...]: ...