refactor(typing): Use typing.Literal from python 3.8

Author: tony

src/libtmux/neo.py

@@ -7,9 +7,7 @@
 from libtmux.formats import FORMAT_SEPARATOR
 
 if t.TYPE_CHECKING:
-    from typing_extensions import Literal
-
-    ListCmd = Literal["list-sessions", "list-windows", "list-panes"]
+    ListCmd = t.Literal["list-sessions", "list-windows", "list-panes"]
     ListExtraArgs = t.Optional[t.Iterable[str]]
 
     from libtmux.server import Server

src/libtmux/pane.py

@@ -17,8 +17,6 @@
 from . import exc
 
 if t.TYPE_CHECKING:
-    from typing_extensions import Literal
-
     from .server import Server
     from .session import Session
     from .window import Window
@@ -158,8 +156,8 @@ def resize_pane(self, *args: t.Any, **kwargs: t.Any) -> "Pane":
 
     def capture_pane(
         self,
-        start: t.Union["Literal['-']", t.Optional[int]] = None,
-        end: t.Union["Literal['-']", t.Optional[int]] = None,
+        start: t.Union["t.Literal['-']", t.Optional[int]] = None,
+        end: t.Union["t.Literal['-']", t.Optional[int]] = None,
     ) -> t.Union[str, t.List[str]]:
         """
         Capture text from pane.
@@ -248,12 +246,12 @@ def send_keys(
 
     @overload
     def display_message(
-        self, cmd: str, get_text: "Literal[True]"
+        self, cmd: str, get_text: "t.Literal[True]"
     ) -> t.Union[str, t.List[str]]:
         ...
 
     @overload
-    def display_message(self, cmd: str, get_text: "Literal[False]") -> None:
+    def display_message(self, cmd: str, get_text: "t.Literal[False]") -> None:
         ...
 
     def display_message(

src/libtmux/server.py

@@ -30,9 +30,9 @@
 )
 
 if t.TYPE_CHECKING:
-    from typing_extensions import Literal, TypeAlias
+    from typing_extensions import TypeAlias
 
-    DashLiteral: TypeAlias = Literal["-"]
+    DashLiteral: TypeAlias = t.Literal["-"]
 
 logger = logging.getLogger(__name__)
 

tests/test_dataclasses.py

@@ -14,9 +14,7 @@
 from libtmux.window import Window
 
 if t.TYPE_CHECKING:
-    from typing_extensions import Literal
-
-    ListCmd = Literal["list-sessions", "list-windows", "list-panes"]
+    ListCmd = t.Literal["list-sessions", "list-windows", "list-panes"]
     ListExtraArgs = t.Optional[t.Tuple[str]]