[misc] upgrade format to py39 (#7256)

src/llamafactory/webui/manager.py

@@ -12,7 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from typing import TYPE_CHECKING, Dict, Generator, List, Set, Tuple
+from collections.abc import Generator
+from typing import TYPE_CHECKING
 
 
 if TYPE_CHECKING:
@@ -20,54 +21,41 @@ if TYPE_CHECKING:
 
 
 class Manager:
-    r"""
-    A class to manage all the gradio components in Web UI.
-    """
+    r"""A class to manage all the gradio components in Web UI."""
 
     def __init__(self) -> None:
-        self._id_to_elem: Dict[str, "Component"] = {}
-        self._elem_to_id: Dict["Component", str] = {}
+        self._id_to_elem: dict[str, Component] = {}
+        self._elem_to_id: dict[Component, str] = {}
 
-    def add_elems(self, tab_name: str, elem_dict: Dict[str, "Component"]) -> None:
-        r"""
-        Adds elements to manager.
-        """
+    def add_elems(self, tab_name: str, elem_dict: dict[str, "Component"]) -> None:
+        r"""Add elements to manager."""
         for elem_name, elem in elem_dict.items():
             elem_id = f"{tab_name}.{elem_name}"
             self._id_to_elem[elem_id] = elem
             self._elem_to_id[elem] = elem_id
 
-    def get_elem_list(self) -> List["Component"]:
-        r"""
-        Returns the list of all elements.
-        """
+    def get_elem_list(self) -> list["Component"]:
+        r"""Return the list of all elements."""
         return list(self._id_to_elem.values())
 
-    def get_elem_iter(self) -> Generator[Tuple[str, "Component"], None, None]:
-        r"""
-        Returns an iterator over all elements with their names.
-        """
+    def get_elem_iter(self) -> Generator[tuple[str, "Component"], None, None]:
+        r"""Return an iterator over all elements with their names."""
         for elem_id, elem in self._id_to_elem.items():
             yield elem_id.split(".")[-1], elem
 
     def get_elem_by_id(self, elem_id: str) -> "Component":
-        r"""
-        Gets element by id.
+        r"""Get element by id.
 
         Example: top.lang, train.dataset
         """
         return self._id_to_elem[elem_id]
 
     def get_id_by_elem(self, elem: "Component") -> str:
-        r"""
-        Gets id by element.
-        """
+        r"""Get id by element."""
         return self._elem_to_id[elem]
 
-    def get_base_elems(self) -> Set["Component"]:
-        r"""
-        Gets the base elements that are commonly used.
-        """
+    def get_base_elems(self) -> set["Component"]:
+        r"""Get the base elements that are commonly used."""
         return {
             self._id_to_elem["top.lang"],
             self._id_to_elem["top.model_name"],