Use a stub rather than TYPE_CHECKING

kittens/ask/main.py

@@ -9,13 +9,13 @@ from typing import TYPE_CHECKING, List, Optional, Tuple
 from kitty.cli import parse_args
 from kitty.cli_stub import AskCLIOptions
 from kitty.constants import cache_dir
+from kitty.typing import BossType
 
 from ..tui.handler import result_handler
 from ..tui.operations import alternate_screen, styled
 
 if TYPE_CHECKING:
     import readline
-    import kitty
 else:
     readline = None
 
@@ -127,7 +127,7 @@ def main(args: List[str]) -> Response:
 
 
 @result_handler()
-def handle_result(args: List[str], data: Response, target_window_id: int, boss: 'kitty.boss.Boss') -> None:
+def handle_result(args: List[str], data: Response, target_window_id: int, boss: BossType) -> None:
     if data['response'] is not None:
         func, *args = data['items']
         getattr(boss, func)(data['response'], *args)

kittens/hints/main.py

@@ -10,8 +10,8 @@ from functools import lru_cache
 from gettext import gettext as _
 from itertools import repeat
 from typing import (
-    TYPE_CHECKING, Any, Callable, Dict, Generator, Iterable, List, Optional,
+    Any, Callable, Dict, Generator, Iterable, List, Optional, Pattern,
-    Pattern, Sequence, Set, Tuple, Type, cast
+    Sequence, Set, Tuple, Type, cast
 )
 
 from kitty.cli import parse_args
@@ -20,30 +20,26 @@ from kitty.fast_data_types import set_clipboard_string
 from kitty.key_encoding import (
     KeyEvent, backspace_key, enter_key, key_defs as K
 )
+from kitty.typing import BossType, KittyCommonOpts
 from kitty.utils import ScreenSize, screen_size_function
 
 from ..tui.handler import Handler, result_handler
 from ..tui.loop import Loop
 from ..tui.operations import faint, styled
 
-if TYPE_CHECKING:
-    from kitty.config import KittyCommonOpts
-    from kitty.boss import Boss
-
 
 @lru_cache()
-def kitty_common_opts() -> 'KittyCommonOpts':
+def kitty_common_opts() -> KittyCommonOpts:
     import json
     v = os.environ.get('KITTY_COMMON_OPTS')
     if v:
-        return cast('KittyCommonOpts', json.loads(v))
+        return cast(KittyCommonOpts, json.loads(v))
     from kitty.config import common_opts_as_dict
     return common_opts_as_dict()
 
 
 DEFAULT_HINT_ALPHABET = string.digits + string.ascii_lowercase
 DEFAULT_REGEX = r'(?m)^\s*(.+)\s*$'
-screen_size = screen_size_function()
 ESCAPE = K['ESCAPE']
 
 
@@ -346,7 +342,7 @@ def parse_input(text: str) -> str:
     try:
         cols = int(os.environ['OVERLAID_WINDOW_COLS'])
     except KeyError:
-        cols = screen_size().cols
+        cols = screen_size_function()().cols
     return convert_text(text, cols)
 
 
@@ -560,7 +556,7 @@ def main(args: List[str]) -> Optional[Dict[str, Any]]:
     return run(opts, text, items)
 
 
-def linenum_handle_result(args: List[str], data: Dict[str, Any], target_window_id: int, boss: 'Boss', extra_cli_args: Sequence[str], *a: Any) -> None:
+def linenum_handle_result(args: List[str], data: Dict[str, Any], target_window_id: int, boss: BossType, extra_cli_args: Sequence[str], *a: Any) -> None:
     for m, g in zip(data['match'], data['groupdicts']):
         if m:
             path, line = g['path'], g['line']
@@ -589,7 +585,7 @@ def linenum_handle_result(args: List[str], data: Dict[str, Any], target_window_i
 
 
 @result_handler(type_of_input='screen')
-def handle_result(args: List[str], data: Dict[str, Any], target_window_id: int, boss: 'Boss') -> None:
+def handle_result(args: List[str], data: Dict[str, Any], target_window_id: int, boss: BossType) -> None:
     if data['customize_processing']:
         m = load_custom_processor(data['customize_processing'])
         if 'handle_result' in m:

kittens/icat/main.py

@@ -13,13 +13,13 @@ from functools import lru_cache
 from math import ceil
 from tempfile import NamedTemporaryFile
 from typing import (
-    TYPE_CHECKING, Dict, Generator, List, NamedTuple, Optional, Pattern, Tuple,
+    Dict, Generator, List, NamedTuple, Optional, Pattern, Tuple, Union
-    Union
 )
 
 from kitty.cli import parse_args
 from kitty.cli_stub import IcatCLIOptions
 from kitty.constants import appname
+from kitty.typing import GRT_f, GRT_t
 from kitty.utils import (
     TTYIO, ScreenSize, ScreenSizeGetter, fit_image, screen_size_function
 )
@@ -30,9 +30,6 @@ from ..tui.images import (
 )
 from ..tui.operations import clear_images_on_screen
 
-if TYPE_CHECKING:
-    from ..tui.images import GRT_f, GRT_t  # noqa
-
 OPTIONS = '''\
 --align
 type=choices

kittens/tui/handler.py

@@ -3,35 +3,29 @@
 # License: GPL v3 Copyright: 2018, Kovid Goyal <kovid at kovidgoyal.net>
 
 
+from types import TracebackType
 from typing import (
-    TYPE_CHECKING, Any, Callable, ContextManager, Dict, Optional, Sequence, Type,
+    Any, Callable, ContextManager, Dict, Optional, Sequence, Type, Union
-    Union
 )
 
-if TYPE_CHECKING:
+from kitty.typing import (
-    from kitty.utils import ScreenSize
+    AbstractEventLoop, BossType, Debug, ImageManagerType, KeyEventType,
-    from .loop import TermManager, Loop, Debug, MouseEvent
+    KittensKeyActionType, LoopType, MouseEvent, ScreenSize, TermManagerType
-    from .images import ImageManager
+)
-    from kitty.conf.utils import KittensKeyAction
-    from kitty.boss import Boss
-    from kitty.key_encoding import KeyEvent
-    from types import TracebackType
-    ScreenSize, TermManager, Loop, Debug, KeyEvent, MouseEvent, TracebackType, Boss, ImageManager
-    import asyncio
 
 
 class Handler:
 
-    image_manager_class: Optional[Type['ImageManager']] = None
+    image_manager_class: Optional[Type[ImageManagerType]] = None
 
     def _initialize(
         self,
-        screen_size: 'ScreenSize',
+        screen_size: ScreenSize,
-        term_manager: 'TermManager',
+        term_manager: TermManagerType,
         schedule_write: Callable[[bytes], None],
-        tui_loop: 'Loop',
+        tui_loop: LoopType,
-        debug: 'Debug',
+        debug: Debug,
-        image_manager: Optional['ImageManager'] = None
+        image_manager: Optional[ImageManagerType] = None
     ) -> None:
         from .operations import commander
         self.screen_size = screen_size
@@ -43,15 +37,15 @@ class Handler:
         self._image_manager = image_manager
 
     @property
-    def image_manager(self) -> 'ImageManager':
+    def image_manager(self) -> ImageManagerType:
         assert self._image_manager is not None
         return self._image_manager
 
     @property
-    def asyncio_loop(self) -> 'asyncio.AbstractEventLoop':
+    def asyncio_loop(self) -> AbstractEventLoop:
         return self._tui_loop.asycio_loop
 
-    def add_shortcut(self, action: 'KittensKeyAction', key: str, mods: Optional[int] = None, is_text: Optional[bool] = False) -> None:
+    def add_shortcut(self, action: KittensKeyActionType, key: str, mods: Optional[int] = None, is_text: Optional[bool] = False) -> None:
         if not hasattr(self, '_text_shortcuts'):
             self._text_shortcuts, self._key_shortcuts = {}, {}
         if is_text:
@@ -59,7 +53,7 @@ class Handler:
         else:
             self._key_shortcuts[(key, mods or 0)] = action
 
-    def shortcut_action(self, key_event_or_text: Union[str, 'KeyEvent']) -> Optional['KittensKeyAction']:
+    def shortcut_action(self, key_event_or_text: Union[str, KeyEventType]) -> Optional[KittensKeyActionType]:
         if isinstance(key_event_or_text, str):
             return self._text_shortcuts.get(key_event_or_text)
         return self._key_shortcuts.get((key_event_or_text.key, key_event_or_text.mods))
@@ -70,7 +64,7 @@ class Handler:
         self.debug.fobj = self
         self.initialize()
 
-    def __exit__(self, etype: type, value: Exception, tb: 'TracebackType') -> None:
+    def __exit__(self, etype: type, value: Exception, tb: TracebackType) -> None:
         del self.debug.fobj
         self.finalize()
         if self._image_manager is not None:
@@ -82,7 +76,7 @@ class Handler:
     def finalize(self) -> None:
         pass
 
-    def on_resize(self, screen_size: 'ScreenSize') -> None:
+    def on_resize(self, screen_size: ScreenSize) -> None:
         self.screen_size = screen_size
 
     def quit_loop(self, return_code: Optional[int] = None) -> None:
@@ -94,7 +88,7 @@ class Handler:
     def on_text(self, text: str, in_bracketed_paste: bool = False) -> None:
         pass
 
-    def on_key(self, key_event: 'KeyEvent') -> None:
+    def on_key(self, key_event: KeyEventType) -> None:
         pass
 
     def on_mouse(self, mouse_event: 'MouseEvent') -> None:
@@ -127,7 +121,7 @@ class Handler:
         data = sep.join(map(str, args)) + end
         self.write(data)
 
-    def suspend(self) -> ContextManager['TermManager']:
+    def suspend(self) -> ContextManager[TermManagerType]:
         return self._term_manager.suspend()
 
 
@@ -141,7 +135,7 @@ class HandleResult:
         self.no_ui = no_ui
         self.type_of_input = type_of_input
 
-    def __call__(self, args: Sequence[str], data: Any, target_window_id: int, boss: 'Boss') -> Any:
+    def __call__(self, args: Sequence[str], data: Any, target_window_id: int, boss: BossType) -> Any:
         return self.impl(args, data, target_window_id, boss)
 
 

kittens/tui/images.py

@@ -10,10 +10,13 @@ from collections import defaultdict, deque
 from contextlib import suppress
 from itertools import count
 from typing import (
-    TYPE_CHECKING, Any, DefaultDict, Deque, Dict, List, Optional, Sequence,
+    Any, DefaultDict, Deque, Dict, List, Optional, Sequence, Tuple, Union
-    Tuple, Union
 )
 
+from kitty.typing import (
+    CompletedProcess, GRT_a, GRT_d, GRT_f, GRT_m, GRT_o, GRT_t, HandlerType,
+    TypedDict
+)
 from kitty.utils import ScreenSize, fit_image
 
 from .operations import cursor
@@ -25,28 +28,11 @@ except Exception:
     fsenc = 'utf-8'
 
 
-try:
-    from typing import TypedDict, Literal
-    GRT_a = Literal['t', 'T', 'q', 'p', 'd']
-    GRT_f = Literal[24, 32, 100]
-    GRT_t = Literal['d', 'f', 't', 's']
-    GRT_o = Literal['z']
-    GRT_m = Literal[0, 1]
-    GRT_d = Literal['a', 'A', 'c', 'C', 'i', 'I', 'p', 'P', 'q', 'Q', 'x', 'X', 'y', 'Y', 'z', 'Z']
-except ImportError:
-    TypedDict = dict
-
-
-if TYPE_CHECKING:
-    import subprocess
-    from .handler import Handler
-
-
 class ImageData:
 
     def __init__(self, fmt: str, width: int, height: int, mode: str):
         self.width, self.height, self.fmt, self.mode = width, height, fmt, mode
-        self.transmit_fmt: 'GRT_f' = (24 if self.mode == 'rgb' else 32)
+        self.transmit_fmt: GRT_f = (24 if self.mode == 'rgb' else 32)
 
 
 class OpenFailed(ValueError):
@@ -71,7 +57,7 @@ class NoImageMagick(Exception):
     pass
 
 
-def run_imagemagick(path: str, cmd: Sequence[str], keep_stdout: bool = True) -> 'subprocess.CompletedProcess[bytes]':
+def run_imagemagick(path: str, cmd: Sequence[str], keep_stdout: bool = True) -> CompletedProcess:
     import subprocess
     try:
         p = subprocess.run(cmd, stdout=subprocess.PIPE if keep_stdout else subprocess.DEVNULL, stderr=subprocess.PIPE)
@@ -140,16 +126,16 @@ SentImageKey = Tuple[int, int, int]
 
 
 class GraphicsCommand:
-    a: 'GRT_a' = 't'  # action
+    a: GRT_a = 't'  # action
-    f: 'GRT_f' = 32   # image data format
+    f: GRT_f = 32   # image data format
-    t: 'GRT_t' = 'd'  # transmission medium
+    t: GRT_t = 'd'  # transmission medium
     s: int = 0        # sent image width
     v: int = 0        # sent image height
     S: int = 0        # size of data to read from file
     O: int = 0        # offset of data to read from file
     i: int = 0        # image id
-    o: Optional['GRT_o'] = None  # type of compression
+    o: Optional[GRT_o] = None  # type of compression
-    m: 'GRT_m' = 0    # 0 or 1 whether there is more chunked data
+    m: GRT_m = 0    # 0 or 1 whether there is more chunked data
     x: int = 0        # left edge of image area to display
     y: int = 0        # top edge of image area to display
     w: int = 0        # image width to display
@@ -159,7 +145,7 @@ class GraphicsCommand:
     c: int = 0        # number of cols to display image over
     r: int = 0        # number of rows to display image over
     z: int = 0        # z-index
-    d: 'GRT_d' = 'a'  # what to delete
+    d: GRT_d = 'a'  # what to delete
 
     def serialize(self, payload: bytes = b'') -> bytes:
         items = []
@@ -193,7 +179,7 @@ class Placement(TypedDict):
 
 class ImageManager:
 
-    def __init__(self, handler: 'Handler'):
+    def __init__(self, handler: HandlerType):
         self.image_id_counter = count()
         self.handler = handler
         self.filesystem_ok: Optional[bool] = None

kittens/tui/loop.py

@@ -12,9 +12,7 @@ import signal
 import sys
 from contextlib import contextmanager
 from functools import partial
-from typing import (
+from typing import Any, Callable, Dict, Generator, List, NamedTuple, Optional
-    TYPE_CHECKING, Any, Callable, Dict, Generator, List, NamedTuple, Optional
-)
 
 from kitty.constants import is_macos
 from kitty.fast_data_types import (
@@ -24,20 +22,12 @@ from kitty.key_encoding import (
     ALT, CTRL, PRESS, RELEASE, REPEAT, SHIFT, backspace_key, decode_key_event,
     enter_key, key_defs as K
 )
-from kitty.utils import screen_size_function, write_all
+from kitty.typing import ImageManagerType, KeyEventType, Protocol
+from kitty.utils import ScreenSizeGetter, screen_size_function, write_all
 
 from .handler import Handler
 from .operations import init_state, reset_state
 
-if TYPE_CHECKING:
-    from kitty.key_encoding import KeyEvent
-    from .images import ImageManager
-    KeyEvent, ImageManager
-    from typing import Protocol
-else:
-    Protocol = object
-
-
 C, D = K['C'], K['D']
 
 
@@ -156,7 +146,7 @@ class UnhandledException(Handler):
         self.write('\r\n')
         self.write('Press the Enter key to quit')
 
-    def on_key(self, key_event: 'KeyEvent') -> None:
+    def on_key(self, key_event: KeyEventType) -> None:
         if key_event is enter_key:
             self.quit_loop(1)
 
@@ -355,7 +345,7 @@ class Loop:
             self.return_code = return_code
         self.asycio_loop.stop()
 
-    def loop_impl(self, handler: Handler, term_manager: TermManager, image_manager: Optional['ImageManager'] = None) -> Optional[str]:
+    def loop_impl(self, handler: Handler, term_manager: TermManager, image_manager: Optional[ImageManagerType] = None) -> Optional[str]:
         self.write_buf = []
         tty_fd = term_manager.tty_fd
         tb = None
@@ -399,7 +389,7 @@ class Loop:
 
         signal_manager = SignalManager(self.asycio_loop, _on_sigwinch, handler.on_interrupt, handler.on_term)
         with TermManager() as term_manager, signal_manager:
-            self._get_screen_size = screen_size_function(term_manager.tty_fd)
+            self._get_screen_size: ScreenSizeGetter = screen_size_function(term_manager.tty_fd)
             image_manager = None
             if handler.image_manager_class is not None:
                 image_manager = handler.image_manager_class(handler)

kittens/tui/operations.py

@@ -6,20 +6,15 @@ import sys
 from contextlib import contextmanager
 from functools import wraps
 from typing import (
-    IO, TYPE_CHECKING, Any, Callable, Dict, Generator, Optional, Tuple,
+    IO, Any, Callable, Dict, Generator, Optional, Tuple, TypeVar, Union
-    TypeVar, Union
 )
 
 from kitty.rgb import Color, color_as_sharp, to_color
+from kitty.typing import GraphicsCommandType, HandlerType, ScreenSize
 
 from .operations_stub import CMD
 
-if TYPE_CHECKING:
+GraphicsCommandType, ScreenSize  # needed for stub generation
-    from kitty.utils import ScreenSize
-    from .images import GraphicsCommand
-    from .handler import Handler
-    ScreenSize, GraphicsCommand, Handler
-
 S7C1T = '\033 F'
 SAVE_CURSOR = '\0337'
 RESTORE_CURSOR = '\0338'
@@ -232,7 +227,7 @@ def serialize_gr_command(cmd: Dict[str, Union[int, str]], payload: Optional[byte
 
 
 @cmd
-def gr_command(cmd: Union[Dict, 'GraphicsCommand'], payload: Optional[bytes] = None) -> str:
+def gr_command(cmd: Union[Dict, 'GraphicsCommandType'], payload: Optional[bytes] = None) -> str:
     if isinstance(cmd, dict):
         raw = serialize_gr_command(cmd, payload)
     else:
@@ -349,14 +344,14 @@ def request_from_clipboard(use_primary: bool = False) -> str:
 # Boilerplate to make operations availble via Handler.cmd  {{{
 
 
-def writer(handler: 'Handler', func: Callable) -> Callable:
+def writer(handler: HandlerType, func: Callable) -> Callable:
     @wraps(func)
     def f(*a: Any, **kw: Any) -> None:
         handler.write(func(*a, **kw))
     return f
 
 
-def commander(handler: 'Handler') -> CMD:
+def commander(handler: HandlerType) -> CMD:
     ans = CMD()
     for name, func in all_cmds.items():
         setattr(ans, name, writer(handler, func))
@@ -374,8 +369,7 @@ def func_sig(func: Callable) -> Generator[str, None, None]:
 def as_type_stub() -> str:
     ans = [
         'from typing import *  # noqa',
-        'from kitty.utils import ScreenSize',
+        'from kitty.typing import GraphicsCommandType, ScreenSize',
-        'from kittens.tui.images import GraphicsCommand',
         'from kitty.rgb import Color',
         'import kitty.rgb',
     ]

kittens/unicode_input/main.py

@@ -10,7 +10,7 @@ from contextlib import suppress
 from functools import lru_cache
 from gettext import gettext as _
 from typing import (
-    TYPE_CHECKING, Any, Dict, FrozenSet, Generator, Iterable, List, Optional, Sequence, Tuple,
+    Any, Dict, FrozenSet, Generator, Iterable, List, Optional, Sequence, Tuple,
     Union
 )
 
@@ -22,6 +22,7 @@ from kitty.fast_data_types import is_emoji_presentation_base, wcswidth
 from kitty.key_encoding import (
     CTRL, RELEASE, SHIFT, KeyEvent, enter_key, key_defs as K
 )
+from kitty.typing import BossType
 from kitty.utils import ScreenSize, get_editor
 
 from ..tui.handler import Handler, result_handler
@@ -32,11 +33,6 @@ from ..tui.operations import (
     sgr, styled
 )
 
-if TYPE_CHECKING:
-    from kitty.boss import Boss
-    Boss
-
-
 HEX, NAME, EMOTICONS, FAVORITES = 'HEX', 'NAME', 'EMOTICONS', 'FAVORITES'
 UP = K['UP']
 DOWN = K['DOWN']
@@ -579,7 +575,7 @@ def main(args: List[str]) -> Optional[str]:
 
 
 @result_handler()
-def handle_result(args: List[str], current_char: str, target_window_id: int, boss: 'Boss') -> None:
+def handle_result(args: List[str], current_char: str, target_window_id: int, boss: BossType) -> None:
     w = boss.window_id_map.get(target_window_id)
     if w is not None:
         w.paste(current_char)

kitty/borders.py

@@ -2,8 +2,9 @@
 # vim:fileencoding=utf-8
 # License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
 
+from enum import IntFlag
 from itertools import chain
-from typing import TYPE_CHECKING, List, Optional, Sequence, Tuple
+from typing import List, Optional, Sequence, Tuple
 
 from .constants import WindowGeometry
 from .fast_data_types import (
@@ -12,17 +13,7 @@ from .fast_data_types import (
 )
 from .options_stub import Options
 from .utils import load_shaders
-
+from .typing import WindowType, LayoutType
-try:
-    from enum import IntFlag
-except ImportError:
-    from enum import IntEnum as IntFlag  # type: ignore
-
-
-if TYPE_CHECKING:
-    from .window import Window
-    from .layout import Layout
-    Window, Layout
 
 
 class BorderColor(IntFlag):
@@ -63,9 +54,9 @@ class Borders:
 
     def __call__(
         self,
-        windows: List['Window'],
+        windows: List[WindowType],
-        active_window: Optional['Window'],
+        active_window: Optional[WindowType],
-        current_layout: 'Layout',
+        current_layout: LayoutType,
         extra_blank_rects: Sequence[Tuple[int, int, int, int]],
         padding_width: int,
         border_width: int,

kitty/boss.py

@@ -10,8 +10,7 @@ from contextlib import suppress
 from functools import partial
 from gettext import gettext as _
 from typing import (
-    TYPE_CHECKING, Any, Callable, Dict, Generator, Iterable, List, Optional,
+    Any, Callable, Dict, Generator, Iterable, List, Optional, Tuple, Union
-    Tuple, Union
 )
 from weakref import WeakValueDictionary
 
@@ -44,6 +43,7 @@ from .session import Session, create_sessions
 from .tabs import (
     SpecialWindow, SpecialWindowInstance, Tab, TabDict, TabManager
 )
+from .typing import PopenType, TypedDict
 from .utils import (
     func_name, get_editor, get_primary_selection, is_path_in_temp_dir,
     log_error, open_url, parse_address_spec, remove_socket_file, safe_print,
@@ -51,13 +51,6 @@ from .utils import (
 )
 from .window import MatchPatternType, Window
 
-if TYPE_CHECKING:
-    from typing import TypedDict
-    from .rc.base import RemoteCommand  # noqa
-    from subprocess import Popen # noqa
-else:
-    TypedDict = dict
-
 
 class OSWindowDict(TypedDict):
     id: int
@@ -149,7 +142,7 @@ class Boss:
     ):
         set_layout_options(opts)
         self.clipboard_buffers: Dict[str, str] = {}
-        self.update_check_process: Optional['Popen'] = None
+        self.update_check_process: Optional[PopenType] = None
         self.window_id_map: WeakValueDictionary[int, Window] = WeakValueDictionary()
         self.startup_colors = {k: opts[k] for k in opts if isinstance(opts[k], Color)}
         self.startup_cursor_text_color = opts.cursor_text_color
@@ -1209,7 +1202,7 @@ class Boss:
             with suppress(FileNotFoundError):
                 os.remove(path)
 
-    def set_update_check_process(self, process: Optional['Popen'] = None) -> None:
+    def set_update_check_process(self, process: Optional[PopenType] = None) -> None:
         if self.update_check_process is not None:
             with suppress(Exception):
                 if self.update_check_process.poll() is None:

kitty/choose_entry.py

@@ -4,15 +4,13 @@
 
 import re
 
-from typing import TYPE_CHECKING, List, Generator, Any, Type
+from typing import List, Generator, Any, Type
 
-if TYPE_CHECKING:
+from .cli_stub import HintsCLIOptions
-    from kitty.cli_stub import HintsCLIOptions
+from .typing import MarkType
-    from kittens.hints.main import Mark as MarkClass
-    HintsCLIOptions, MarkClass
 
 
-def mark(text: str, args: 'HintsCLIOptions', Mark: Type['MarkClass'], extra_cli_args: List[str], *a: Any) -> Generator['MarkClass', None, None]:
+def mark(text: str, args: HintsCLIOptions, Mark: Type[MarkType], extra_cli_args: List[str], *a: Any) -> Generator[MarkType, None, None]:
     for idx, m in enumerate(re.finditer(args.regex, text)):
         start, end = m.span()
         mark_text = text[start:end].replace('\n', '').replace('\0', '')

kitty/cli.py

@@ -7,32 +7,27 @@ import re
 import sys
 from collections import deque
 from typing import (
-    TYPE_CHECKING, Any, Callable, Dict, FrozenSet, Iterable, Iterator, List,
+    Any, Callable, Dict, FrozenSet, Iterable, Iterator, List, Match, Optional,
-    Match, Optional, Sequence, Set, Tuple, Type, TypeVar, Union, cast
+    Sequence, Set, Tuple, Type, TypeVar, Union, cast
 )
 
 from .cli_stub import CLIOptions
 from .conf.utils import resolve_config
+from .config import KeyAction
 from .constants import appname, defconf, is_macos, is_wayland, str_version
 from .options_stub import Options as OptionsStub
+from .typing import BadLineType, KeySpec, SequenceMap, TypedDict
 
-try:
-    from typing import TypedDict
 
-    class OptionDict(TypedDict):
+class OptionDict(TypedDict):
-        dest: str
+    dest: str
-        aliases: FrozenSet[str]
+    aliases: FrozenSet[str]
-        help: str
+    help: str
-        choices: FrozenSet[str]
+    choices: FrozenSet[str]
-        type: str
+    type: str
-        default: Optional[str]
+    default: Optional[str]
-        condition: bool
+    condition: bool
-except ImportError:
-    OptionDict = Dict[str, Any]  # type: ignore
 
-if TYPE_CHECKING:
-    from .config import KeyAction, KeySpec, SequenceMap  # noqa
-    from .conf.utils import BadLine  # noqa
 
 CONFIG_HELP = '''\
 Specify a path to the configuration file(s) to use. All configuration files are
@@ -733,10 +728,10 @@ def parse_args(
 
 
 SYSTEM_CONF = '/etc/xdg/kitty/kitty.conf'
-ShortcutMap = Dict[Tuple['KeySpec', ...], 'KeyAction']
+ShortcutMap = Dict[Tuple[KeySpec, ...], KeyAction]
 
 
-def print_shortcut(key_sequence: Iterable['KeySpec'], action: 'KeyAction') -> None:
+def print_shortcut(key_sequence: Iterable[KeySpec], action: KeyAction) -> None:
     if not getattr(print_shortcut, 'maps', None):
         from kitty.keys import defines
         v = vars(defines)
@@ -764,7 +759,7 @@ def print_shortcut(key_sequence: Iterable['KeySpec'], action: 'KeyAction') -> No
     print('\t', ' > '.join(keys), action)
 
 
-def print_shortcut_changes(defns: ShortcutMap, text: str, changes: Set[Tuple['KeySpec', ...]]) -> None:
+def print_shortcut_changes(defns: ShortcutMap, text: str, changes: Set[Tuple[KeySpec, ...]]) -> None:
     if changes:
         print(title(text))
 
@@ -781,8 +776,8 @@ def compare_keymaps(final: ShortcutMap, initial: ShortcutMap) -> None:
     print_shortcut_changes(final, 'Changed shortcuts:', changed)
 
 
-def flatten_sequence_map(m: 'SequenceMap') -> ShortcutMap:
+def flatten_sequence_map(m: SequenceMap) -> ShortcutMap:
-    ans: Dict[Tuple['KeySpec', ...], 'KeyAction'] = {}
+    ans: Dict[Tuple[KeySpec, ...], KeyAction] = {}
     for key_spec, rest_map in m.items():
         for r, action in rest_map.items():
             ans[(key_spec,) + (r)] = action
@@ -811,7 +806,7 @@ def compare_opts(opts: OptionsStub) -> None:
     compare_keymaps(final, initial)
 
 
-def create_opts(args: CLIOptions, debug_config: bool = False, accumulate_bad_lines: Optional[List['BadLine']] = None) -> OptionsStub:
+def create_opts(args: CLIOptions, debug_config: bool = False, accumulate_bad_lines: Optional[List[BadLineType]] = None) -> OptionsStub:
     from .config import load_config
     config = tuple(resolve_config(SYSTEM_CONF, defconf, args.config))
     if debug_config:

kitty/config.py

@@ -23,14 +23,9 @@ from .config_data import all_options, parse_mods, type_convert
 from .constants import cache_dir, defconf, is_macos
 from .key_names import get_key_name_lookup, key_name_aliases
 from .options_stub import Options as OptionsStub
+from .typing import TypedDict
 from .utils import log_error
 
-try:
-    from typing import TypedDict
-except ImportError:
-    TypedDict = dict
-
-
 KeySpec = Tuple[int, bool, int]
 KeyMap = Dict[KeySpec, 'KeyAction']
 KeySequence = Tuple[KeySpec, ...]

kitty/constants.py

@@ -8,10 +8,9 @@ import pwd
 import sys
 from contextlib import suppress
 from functools import lru_cache
-from typing import TYPE_CHECKING, NamedTuple, Optional, Set
+from typing import NamedTuple, Optional, Set
 
-if TYPE_CHECKING:
+from .options_stub import Options
-    from .options_stub import Options  # noqa
 
 
 class Version(NamedTuple):
@@ -20,11 +19,11 @@ class Version(NamedTuple):
     patch: int
 
 
-appname = 'kitty'
+appname: str = 'kitty'
-version = Version(0, 16, 0)
+version: Version = Version(0, 16, 0)
-str_version = '.'.join(map(str, version))
+str_version: str = '.'.join(map(str, version))
 _plat = sys.platform.lower()
-is_macos = 'darwin' in _plat
+is_macos: bool = 'darwin' in _plat
 base = os.path.dirname(os.path.abspath(__file__))
 
 
@@ -179,7 +178,7 @@ def detect_if_wayland_ok() -> bool:
     return ans == b'YES'
 
 
-def is_wayland(opts: Optional['Options'] = None) -> bool:
+def is_wayland(opts: Optional[Options] = None) -> bool:
     if is_macos:
         return False
     if opts is None:

kitty/fonts/core_text.py

@@ -3,31 +3,25 @@
 # License: GPL v3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
 
 import re
-from typing import (
+from typing import Dict, Generator, Iterable, List, Optional, Tuple
-    TYPE_CHECKING, Dict, Generator, Iterable, List, Optional, Tuple
-)
 
 from kitty.fast_data_types import coretext_all_fonts
 from kitty.options_stub import Options
+from kitty.typing import CoreTextFont
 from kitty.utils import log_error
 
 from . import ListedFont
 
-if TYPE_CHECKING:
-    from kitty.fast_data_types import CoreTextFont as C
-    CoreTextFont = C
-
-
 attr_map = {(False, False): 'font_family',
             (True, False): 'bold_font',
             (False, True): 'italic_font',
             (True, True): 'bold_italic_font'}
 
 
-FontMap = Dict[str, Dict[str, List['CoreTextFont']]]
+FontMap = Dict[str, Dict[str, List[CoreTextFont]]]
 
 
-def create_font_map(all_fonts: Iterable['CoreTextFont']) -> FontMap:
+def create_font_map(all_fonts: Iterable[CoreTextFont]) -> FontMap:
     ans: FontMap = {'family_map': {}, 'ps_map': {}, 'full_map': {}}
     for x in all_fonts:
         f = (x['family'] or '').lower()
@@ -56,11 +50,11 @@ def list_fonts() -> Generator[ListedFont, None, None]:
             yield {'family': f, 'full_name': fn, 'postscript_name': fd['postscript_name'] or '', 'is_monospace': is_mono}
 
 
-def find_best_match(family: str, bold: bool = False, italic: bool = False) -> 'CoreTextFont':
+def find_best_match(family: str, bold: bool = False, italic: bool = False) -> CoreTextFont:
     q = re.sub(r'\s+', ' ', family.lower())
     font_map = all_fonts_map()
 
-    def score(candidate: 'CoreTextFont') -> Tuple[int, int]:
+    def score(candidate: CoreTextFont) -> Tuple[int, int]:
         style_match = 1 if candidate['bold'] == bold and candidate[
             'italic'
         ] == italic else 0
@@ -90,8 +84,8 @@ def resolve_family(f: str, main_family: str, bold: bool = False, italic: bool =
     return f
 
 
-def get_font_files(opts: Options) -> Dict[str, 'CoreTextFont']:
+def get_font_files(opts: Options) -> Dict[str, CoreTextFont]:
-    ans: Dict[str, 'CoreTextFont'] = {}
+    ans: Dict[str, CoreTextFont] = {}
     for (bold, italic), attr in attr_map.items():
         face = find_best_match(resolve_family(getattr(opts, attr), opts.font_family, bold, italic), bold, italic)
         key = {(False, False): 'medium',
@@ -104,6 +98,6 @@ def get_font_files(opts: Options) -> Dict[str, 'CoreTextFont']:
     return ans
 
 
-def font_for_family(family: str) -> Tuple['CoreTextFont', bool, bool]:
+def font_for_family(family: str) -> Tuple[CoreTextFont, bool, bool]:
     ans = find_best_match(resolve_family(family, getattr(get_font_files, 'medium_family')))
     return ans, ans['bold'], ans['italic']

kitty/fonts/fontconfig.py

@@ -4,31 +4,27 @@
 
 import re
 from functools import lru_cache
-from typing import TYPE_CHECKING, Dict, Generator, List, Optional, Tuple, cast
+from typing import Dict, Generator, List, Optional, Tuple, cast
 
 from kitty.fast_data_types import (
     FC_DUAL, FC_MONO, FC_SLANT_ITALIC, FC_SLANT_ROMAN, FC_WEIGHT_BOLD,
     FC_WEIGHT_REGULAR, fc_list, fc_match as fc_match_impl
 )
 from kitty.options_stub import Options
+from kitty.typing import FontConfigPattern
 
 from . import ListedFont
 
-if TYPE_CHECKING:
-    from kitty.fast_data_types import FontConfigPattern as F
-    FontConfigPattern = F
-
-
 attr_map = {(False, False): 'font_family',
             (True, False): 'bold_font',
             (False, True): 'italic_font',
             (True, True): 'bold_italic_font'}
 
 
-FontMap = Dict[str, Dict[str, List['FontConfigPattern']]]
+FontMap = Dict[str, Dict[str, List[FontConfigPattern]]]
 
 
-def create_font_map(all_fonts: Tuple['FontConfigPattern', ...]) -> FontMap:
+def create_font_map(all_fonts: Tuple[FontConfigPattern, ...]) -> FontMap:
     ans: FontMap = {'family_map': {}, 'ps_map': {}, 'full_map': {}}
     for x in all_fonts:
         if 'path' not in x:
@@ -69,15 +65,15 @@ def family_name_to_key(family: str) -> str:
 
 
 @lru_cache()
-def fc_match(family: str, bold: bool, italic: bool, spacing: int = FC_MONO) -> 'FontConfigPattern':
+def fc_match(family: str, bold: bool, italic: bool, spacing: int = FC_MONO) -> FontConfigPattern:
     return fc_match_impl(family, bold, italic, spacing)
 
 
-def find_best_match(family: str, bold: bool = False, italic: bool = False, monospaced: bool = True) -> 'FontConfigPattern':
+def find_best_match(family: str, bold: bool = False, italic: bool = False, monospaced: bool = True) -> FontConfigPattern:
     q = family_name_to_key(family)
     font_map = all_fonts_map(monospaced)
 
-    def score(candidate: 'FontConfigPattern') -> Tuple[int, int]:
+    def score(candidate: FontConfigPattern) -> Tuple[int, int]:
         bold_score = abs((FC_WEIGHT_BOLD if bold else FC_WEIGHT_REGULAR) - candidate.get('weight', 0))
         italic_score = abs((FC_SLANT_ITALIC if italic else FC_SLANT_ROMAN) - candidate.get('slant', 0))
         monospace_match = 0 if candidate.get('spacing') == 'MONO' else 1
@@ -118,8 +114,8 @@ def resolve_family(f: str, main_family: str, bold: bool, italic: bool) -> str:
     return f
 
 
-def get_font_files(opts: Options) -> Dict[str, 'FontConfigPattern']:
+def get_font_files(opts: Options) -> Dict[str, FontConfigPattern]:
-    ans: Dict[str, 'FontConfigPattern'] = {}
+    ans: Dict[str, FontConfigPattern] = {}
     for (bold, italic), attr in attr_map.items():
         rf = resolve_family(getattr(opts, attr), opts.font_family, bold, italic)
         font = find_best_match(rf, bold, italic)
@@ -131,6 +127,6 @@ def get_font_files(opts: Options) -> Dict[str, 'FontConfigPattern']:
     return ans
 
 
-def font_for_family(family: str) -> Tuple['FontConfigPattern', bool, bool]:
+def font_for_family(family: str) -> Tuple[FontConfigPattern, bool, bool]:
     ans = find_best_match(family, monospaced=False)
     return ans, ans.get('weight', 0) >= FC_WEIGHT_BOLD, ans.get('slant', FC_SLANT_ROMAN) != FC_SLANT_ROMAN

kitty/fonts/render.py

@@ -6,9 +6,7 @@ import ctypes
 import sys
 from functools import partial
 from math import ceil, cos, floor, pi
-from typing import (
+from typing import Any, Callable, Dict, List, Optional, Tuple, Union, cast
-    TYPE_CHECKING, Any, Callable, Dict, List, Optional, Tuple, Union, cast
-)
 
 from kitty.config import defaults
 from kitty.constants import is_macos
@@ -21,18 +19,15 @@ from kitty.fonts.box_drawing import (
     BufType, render_box_char, render_missing_glyph
 )
 from kitty.options_stub import Options as OptionsStub
+from kitty.typing import CoreTextFont, FontConfigPattern
 from kitty.utils import log_error
 
 if is_macos:
     from .core_text import get_font_files as get_font_files_coretext, font_for_family as font_for_family_macos
-    if TYPE_CHECKING:
-        from .core_text import CoreTextFont  # noqa
 else:
     from .fontconfig import get_font_files as get_font_files_fontconfig, font_for_family as font_for_family_fontconfig
-    if TYPE_CHECKING:
-        from .fontconfig import FontConfigPattern  # noqa
 
-FontObject = Union['CoreTextFont', 'FontConfigPattern']
+FontObject = Union[CoreTextFont, FontConfigPattern]
 current_faces: List[Tuple[FontObject, bool, bool]] = []
 
 

kitty/key_encoding.py

@@ -3,7 +3,7 @@
 # License: GPL v3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
 
 import string
-from typing import NamedTuple, Optional
+from typing import Dict, NamedTuple, Optional
 
 from . import fast_data_types as defines
 from .key_names import key_name_aliases
@@ -457,14 +457,16 @@ class KeyEvent(NamedTuple):
     key: str
 
 
-PRESS, REPEAT, RELEASE = 1, 2, 4
+PRESS: int = 1
+REPEAT: int = 2
+RELEASE: int = 4
 SHIFT, ALT, CTRL, SUPER = 1, 2, 4, 8
 type_map = {'p': PRESS, 't': REPEAT, 'r': RELEASE}
 rtype_map = {v: k for k, v in type_map.items()}
 mod_map = {c: i for i, c in enumerate('ABCDEFGHIJKLMNOP')}
 rmod_map = {v: k for k, v in mod_map.items()}
 key_rmap = {}
-key_defs = {}
+key_defs: Dict[str, str] = {}
 config_key_map = {}
 config_mod_map = {
     'SHIFT': SHIFT,

kitty/keys.py

@@ -3,20 +3,15 @@
 # License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
 
 import string
-from typing import (
+from typing import Any, Callable, Dict, Iterable, Optional, Tuple, Union
-    TYPE_CHECKING, Any, Callable, Dict, Iterable, Optional, Tuple, Union
-)
 
 from . import fast_data_types as defines
 from .config import KeyAction, KeyMap, KeySpec, SequenceMap, SubSequenceMap
 from .key_encoding import KEY_MAP
 from .terminfo import key_as_bytes, modify_key_bytes
+from .typing import ScreenType, WindowType
 from .utils import base64_encode
 
-if TYPE_CHECKING:
-    from .fast_data_types import Screen  # noqa
-    from .window import Window  # noqa
-
 
 def modify_complex_key(name: Union[str, bytes], amt: int) -> bytes:
     q = name if isinstance(name, bytes) else key_as_bytes(name)
@@ -149,7 +144,7 @@ rmkx_key_map.update({
 cursor_key_mode_map = {True: smkx_key_map, False: rmkx_key_map}
 
 
-def keyboard_mode_name(screen: 'Screen') -> str:
+def keyboard_mode_name(screen: ScreenType) -> str:
     if screen.extended_keyboard:
         return 'kitty'
     return 'application' if screen.cursor_key_mode else 'normal'
@@ -270,7 +265,7 @@ def key_to_bytes(key: int, smkx: bool, extended: bool, mods: int, action: int) -
     return bytes(data)
 
 
-def interpret_key_event(key: int, native_key: int, mods: int, window: 'Window', action: int) -> bytes:
+def interpret_key_event(key: int, native_key: int, mods: int, window: WindowType, action: int) -> bytes:
     screen = window.screen
     if (
             action == defines.GLFW_PRESS or

kitty/layout.py

@@ -5,7 +5,7 @@
 from functools import lru_cache, partial
 from itertools import islice, repeat
 from typing import (
-    TYPE_CHECKING, Callable, Collection, Deque, Dict, FrozenSet, Generator,
+    Callable, Collection, Deque, Dict, FrozenSet, Generator,
     Iterable, List, NamedTuple, Optional, Sequence, Tuple, Union, cast
 )
 
@@ -14,20 +14,7 @@ from .fast_data_types import (
     Region, set_active_window, swap_windows, viewport_for_window
 )
 from .options_stub import Options
-
+from .typing import WindowType, EdgeLiteral, TypedDict
-try:
-    from typing import TypedDict, Literal
-    EdgeLiteral = Literal['left', 'top', 'right', 'bottom']
-except ImportError:
-    TypedDict = dict
-    EdgeLiteral = str  # type: ignore
-
-
-if TYPE_CHECKING:
-    from .window import Window
-    Window
-else:
-    Window = object
 
 
 class Borders(NamedTuple):
@@ -53,7 +40,7 @@ draw_active_borders = True
 align_top_left = False
 LayoutDimension = Generator[Tuple[int, int], None, None]
 DecorationPairs = Sequence[Tuple[int, int]]
-WindowList = Union[List[Window], Deque[Window]]
+WindowList = Union[List[WindowType], Deque[WindowType]]
 
 
 class InternalNeighborsMap(TypedDict):
@@ -70,7 +57,7 @@ class NeighborsMap(TypedDict):
     bottom: Tuple[int, ...]
 
 
-def idx_for_id(win_id: int, windows: Iterable[Window]) -> Optional[int]:
+def idx_for_id(win_id: int, windows: Iterable[WindowType]) -> Optional[int]:
     for i, w in enumerate(windows):
         if w.id == win_id:
             return i
@@ -134,7 +121,7 @@ class Rect(NamedTuple):
     bottom: int
 
 
-def process_overlaid_windows(all_windows: WindowList) -> Tuple[FrozenSet[Window], WindowList]:
+def process_overlaid_windows(all_windows: WindowList) -> Tuple[FrozenSet[WindowType], WindowList]:
     id_map = {w.id: w for w in all_windows}
     overlaid_windows = frozenset(w for w in all_windows if w.overlay_window_id is not None and w.overlay_window_id in id_map)
     windows = [w for w in all_windows if w not in overlaid_windows]
@@ -151,25 +138,25 @@ def layout_single_window(xdecoration_pairs: DecorationPairs, ydecoration_pairs:
     return window_geometry(xstart, xnum, ystart, ynum)
 
 
-def left_blank_rect(w: Window, rects: List[Rect]) -> None:
+def left_blank_rect(w: WindowType, rects: List[Rect]) -> None:
     lt = w.geometry.left
     if lt > central.left:
         rects.append(Rect(central.left, central.top, lt, central.bottom + 1))
 
 
-def right_blank_rect(w: Window, rects: List[Rect]) -> None:
+def right_blank_rect(w: WindowType, rects: List[Rect]) -> None:
     r = w.geometry.right
     if r < central.right:
         rects.append(Rect(r, central.top, central.right + 1, central.bottom + 1))
 
 
-def top_blank_rect(w: Window, rects: List[Rect]) -> None:
+def top_blank_rect(w: WindowType, rects: List[Rect]) -> None:
     t = w.geometry.top
     if t > central.top:
         rects.append(Rect(central.left, central.top, central.right + 1, t))
 
 
-def bottom_blank_rect(w: Window, rects: List[Rect]) -> None:
+def bottom_blank_rect(w: WindowType, rects: List[Rect]) -> None:
     b = w.geometry.bottom
     # Need to use <= here as otherwise a single pixel row at the bottom of the
     # window is sometimes not covered. See https://github.com/kovidgoyal/kitty/issues/506
@@ -177,7 +164,7 @@ def bottom_blank_rect(w: Window, rects: List[Rect]) -> None:
         rects.append(Rect(central.left, b, central.right + 1, central.bottom + 1))
 
 
-def blank_rects_for_window(w: Window) -> List[Rect]:
+def blank_rects_for_window(w: WindowType) -> List[Rect]:
     ans: List[Rect] = []
     left_blank_rect(w, ans)
     top_blank_rect(w, ans)
@@ -288,7 +275,7 @@ class Layout:  # {{{
                     data[k] = v
         return type(self.layout_opts)(data)
 
-    def nth_window(self, all_windows: WindowList, num: int) -> Window:
+    def nth_window(self, all_windows: WindowList, num: int) -> WindowType:
         windows = process_overlaid_windows(all_windows)[1]
         w = windows[min(num, len(windows) - 1)]
         return w
@@ -370,7 +357,7 @@ class Layout:  # {{{
     def swap_windows_in_layout(self, all_windows: WindowList, a: int, b: int) -> None:
         all_windows[a], all_windows[b] = all_windows[b], all_windows[a]
 
-    def add_window(self, all_windows: WindowList, window: Window, current_active_window_idx: int, location: Optional[str] = None) -> int:
+    def add_window(self, all_windows: WindowList, window: WindowType, current_active_window_idx: int, location: Optional[str] = None) -> int:
         active_window_idx = None
         if window.overlay_for is not None:
             i = idx_for_id(window.overlay_for, all_windows)
@@ -390,7 +377,7 @@ class Layout:  # {{{
         self.set_active_window_in_os_window(active_window_idx)
         return active_window_idx
 
-    def do_add_window(self, all_windows: WindowList, window: Window, current_active_window_idx: Optional[int], location: Optional[str]) -> int:
+    def do_add_window(self, all_windows: WindowList, window: WindowType, current_active_window_idx: Optional[int], location: Optional[str]) -> int:
         active_window_idx = None
         if location is not None:
             if location in ('after', 'vsplit', 'hsplit') and current_active_window_idx is not None and len(all_windows) > 1:
@@ -409,7 +396,7 @@ class Layout:  # {{{
             all_windows.append(window)
         return active_window_idx
 
-    def remove_window(self, all_windows: WindowList, window: Window, current_active_window_idx: int, swapped: bool = False) -> int:
+    def remove_window(self, all_windows: WindowList, window: WindowType, current_active_window_idx: int, swapped: bool = False) -> int:
         try:
             active_window = all_windows[current_active_window_idx]
         except Exception:
@@ -443,7 +430,7 @@ class Layout:  # {{{
             self(all_windows, active_window_idx)
         return self.set_active_window(all_windows, active_window_idx)
 
-    def update_visibility(self, all_windows: WindowList, active_window: Window, overlaid_windows: Optional[FrozenSet[Window]] = None) -> None:
+    def update_visibility(self, all_windows: WindowList, active_window: WindowType, overlaid_windows: Optional[FrozenSet[WindowType]] = None) -> None:
         if overlaid_windows is None:
             overlaid_windows = process_overlaid_windows(all_windows)[0]
         for i, w in enumerate(all_windows):
@@ -492,7 +479,7 @@ class Layout:  # {{{
         return cast(int, idx_for_id(active_window.id, all_windows))
 
     # Utils {{{
-    def layout_single_window(self, w: Window) -> None:
+    def layout_single_window(self, w: WindowType) -> None:
         mw = self.margin_width if self.single_window_margin_width < 0 else self.single_window_margin_width
         decoration_pairs = ((self.padding_width + mw, self.padding_width + mw),)
         wg = layout_single_window(decoration_pairs, decoration_pairs)
@@ -521,19 +508,19 @@ class Layout:  # {{{
             height = central.height
         return layout_dimension(top, height, cell_height, decoration_pairs, bias=bias, left_align=align_top_left)
 
-    def simple_blank_rects(self, first_window: Window, last_window: Window) -> None:
+    def simple_blank_rects(self, first_window: WindowType, last_window: WindowType) -> None:
         br = self.blank_rects
         left_blank_rect(first_window, br)
         top_blank_rect(first_window, br)
         right_blank_rect(last_window, br)
 
-    def between_blank_rect(self, left_window: Window, right_window: Window, vertical: bool = True) -> None:
+    def between_blank_rect(self, left_window: WindowType, right_window: WindowType, vertical: bool = True) -> None:
         if vertical:
             self.blank_rects.append(Rect(left_window.geometry.right, central.top, right_window.geometry.left, central.bottom + 1))
         else:
             self.blank_rects.append(Rect(central.left, left_window.geometry.top, central.right + 1, right_window.geometry.bottom))
 
-    def bottom_blank_rect(self, window: Window) -> None:
+    def bottom_blank_rect(self, window: WindowType) -> None:
         self.blank_rects.append(Rect(window.geometry.left, window.geometry.bottom, window.geometry.right, central.bottom + 1))
     # }}}
 
@@ -543,24 +530,24 @@ class Layout:  # {{{
     def do_layout_all_windows(self, windows: WindowList, active_window_idx: int, all_windows: WindowList) -> None:
         raise NotImplementedError()
 
-    def neighbors_for_window(self, window: Window, windows: WindowList) -> InternalNeighborsMap:
+    def neighbors_for_window(self, window: WindowType, windows: WindowList) -> InternalNeighborsMap:
         return {'left': [], 'right': [], 'top': [], 'bottom': []}
 
-    def compute_needs_borders_map(self, windows: WindowList, active_window: Optional[Window]) -> Dict[int, bool]:
+    def compute_needs_borders_map(self, windows: WindowList, active_window: Optional[WindowType]) -> Dict[int, bool]:
         return {w.id: ((w is active_window and draw_active_borders) or w.needs_attention) for w in windows}
 
-    def resolve_borders(self, windows: WindowList, active_window: Optional[Window]) -> Generator[Borders, None, None]:
+    def resolve_borders(self, windows: WindowList, active_window: Optional[WindowType]) -> Generator[Borders, None, None]:
         if draw_minimal_borders:
             needs_borders_map = self.compute_needs_borders_map(windows, active_window)
             yield from self.minimal_borders(windows, active_window, needs_borders_map)
         else:
             yield from Layout.minimal_borders(self, windows, active_window, {})
 
-    def window_independent_borders(self, windows: WindowList, active_window: Optional[Window] = None) -> Generator[Tuple[int, int, int, int], None, None]:
+    def window_independent_borders(self, windows: WindowList, active_window: Optional[WindowType] = None) -> Generator[Tuple[int, int, int, int], None, None]:
         return
         yield (0, 0, 0, 0)  # type: ignore
 
-    def minimal_borders(self, windows: WindowList, active_window: Optional[Window], needs_borders_map: Dict[int, bool]) -> Generator[Borders, None, None]:
+    def minimal_borders(self, windows: WindowList, active_window: Optional[WindowType], needs_borders_map: Dict[int, bool]) -> Generator[Borders, None, None]:
         for w in windows:
             if (w is active_window and draw_active_borders) or w.needs_attention:
                 yield all_borders
@@ -592,7 +579,7 @@ class Stack(Layout):  # {{{
 # Tall {{{
 
 
-def neighbors_for_tall_window(num_full_size_windows: int, window: Window, windows: WindowList) -> InternalNeighborsMap:
+def neighbors_for_tall_window(num_full_size_windows: int, window: WindowType, windows: WindowList) -> InternalNeighborsMap:
     idx = windows.index(window)
     prev = None if idx == 0 else windows[idx-1]
     nxt = None if idx == len(windows) - 1 else windows[idx+1]
@@ -713,10 +700,10 @@ class Tall(Layout):
         # left, top and right blank rects
         self.simple_blank_rects(windows[0], windows[-1])
 
-    def neighbors_for_window(self, window: Window, windows: WindowList) -> InternalNeighborsMap:
+    def neighbors_for_window(self, window: WindowType, windows: WindowList) -> InternalNeighborsMap:
         return neighbors_for_tall_window(self.num_full_size_windows, window, windows)
 
-    def minimal_borders(self, windows: WindowList, active_window: Optional[Window], needs_borders_map: Dict[int, bool]) -> Generator[Borders, None, None]:
+    def minimal_borders(self, windows: WindowList, active_window: Optional[WindowType], needs_borders_map: Dict[int, bool]) -> Generator[Borders, None, None]:
         last_i = len(windows) - 1
         for i, w in enumerate(windows):
             if needs_borders_map[w.id]:
@@ -778,7 +765,7 @@ class Fat(Tall):  # {{{
         # left, top and right blank rects
         self.simple_blank_rects(windows[0], windows[-1])
 
-    def neighbors_for_window(self, window: Window, windows: WindowList) -> InternalNeighborsMap:
+    def neighbors_for_window(self, window: WindowType, windows: WindowList) -> InternalNeighborsMap:
         idx = windows.index(window)
         prev = None if idx == 0 else windows[idx-1]
         nxt = None if idx == len(windows) - 1 else windows[idx+1]
@@ -925,7 +912,7 @@ class Grid(Layout):
         for i in range(ncols - 1):
             self.between_blank_rect(win_col_map[i][0], win_col_map[i + 1][0])
 
-    def minimal_borders(self, windows: WindowList, active_window: Optional[Window], needs_borders_map: Dict[int, bool]) -> Generator[Borders, None, None]:
+    def minimal_borders(self, windows: WindowList, active_window: Optional[WindowType], needs_borders_map: Dict[int, bool]) -> Generator[Borders, None, None]:
         n = len(windows)
         ncols, nrows, special_rows, special_col = calc_grid_size(n)
         blank_row: List[Optional[int]] = [None for i in range(ncols)]
@@ -962,7 +949,7 @@ class Grid(Layout):
                 bottom_neighbor_id is not None and not needs_borders_map[bottom_neighbor_id]
             )
 
-    def neighbors_for_window(self, window: Window, windows: WindowList) -> InternalNeighborsMap:
+    def neighbors_for_window(self, window: WindowType, windows: WindowList) -> InternalNeighborsMap:
         n = len(windows)
         if n < 4:
             return neighbors_for_tall_window(1, window, windows)
@@ -1051,7 +1038,7 @@ class Vertical(Layout):  # {{{
         # left, top and right blank rects
         self.simple_blank_rects(windows[0], windows[-1])
 
-    def minimal_borders(self, windows: WindowList, active_window: Optional[Window], needs_borders_map: Dict[int, bool]) -> Generator[Borders, None, None]:
+    def minimal_borders(self, windows: WindowList, active_window: Optional[WindowType], needs_borders_map: Dict[int, bool]) -> Generator[Borders, None, None]:
         last_i = len(windows) - 1
         for i, w in enumerate(windows):
             if needs_borders_map[w.id]:
@@ -1065,7 +1052,7 @@ class Vertical(Layout):  # {{{
             else:
                 yield self.only_between_border
 
-    def neighbors_for_window(self, window: Window, windows: WindowList) -> InternalNeighborsMap:
+    def neighbors_for_window(self, window: WindowType, windows: WindowList) -> InternalNeighborsMap:
         idx = windows.index(window)
         before = [] if window is windows[0] else [windows[idx-1].id]
         after = [] if window is windows[-1] else [windows[idx+1].id]
@@ -1220,7 +1207,7 @@ class Pair:
             tuple(map(pair.balanced_add, q))
         return pair
 
-    def apply_window_geometry(self, window_id: int, window_geometry: WindowGeometry, id_window_map: Dict[int, Window], id_idx_map: Dict[int, int]) -> None:
+    def apply_window_geometry(self, window_id: int, window_geometry: WindowGeometry, id_window_map: Dict[int, WindowType], id_idx_map: Dict[int, int]) -> None:
         w = id_window_map[window_id]
         w.set_geometry(id_idx_map[window_id], window_geometry)
         if w.overlay_window_id is not None:
@@ -1228,7 +1215,7 @@ class Pair:
             if q is not None:
                 q.set_geometry(id_idx_map[q.id], window_geometry)
 
-    def blank_rects_for_window(self, layout_object: Layout, window: Window, left: int, top: int, width: int, height: int) -> None:
+    def blank_rects_for_window(self, layout_object: Layout, window: WindowType, left: int, top: int, width: int, height: int) -> None:
         right = left + width - 1
         bottom = top + height - 1
         g = window.geometry
@@ -1249,7 +1236,7 @@ class Pair:
     def layout_pair(
         self,
         left: int, top: int, width: int, height: int,
-        id_window_map: Dict[int, Window],
+        id_window_map: Dict[int, WindowType],
         id_idx_map: Dict[int, int],
         layout_object: Layout
     ) -> None:
@@ -1436,7 +1423,7 @@ class Splits(Layout):
     def do_add_window(
         self,
         all_windows: WindowList,
-        window: Window,
+        window: WindowType,
         current_active_window_idx: Optional[int],
         location: Optional[str]
     ) -> int:
@@ -1490,14 +1477,14 @@ class Splits(Layout):
             pair.bias = 0.5
         return True
 
-    def window_independent_borders(self, windows: WindowList, active_window: Optional[Window] = None) -> Generator[Tuple[int, int, int, int], None, None]:
+    def window_independent_borders(self, windows: WindowList, active_window: Optional[WindowType] = None) -> Generator[Tuple[int, int, int, int], None, None]:
         if not draw_minimal_borders:
             return
         for pair in self.pairs_root.self_and_descendants():
             if pair.between_border is not None:
                 yield pair.between_border
 
-    def neighbors_for_window(self, window: Window, windows: WindowList) -> InternalNeighborsMap:
+    def neighbors_for_window(self, window: WindowType, windows: WindowList) -> InternalNeighborsMap:
         window_id = window.overlay_for or window.id
         pair = self.pairs_root.pair_for_window(window_id)
         ans: InternalNeighborsMap = {'left': [], 'right': [], 'top': [], 'bottom': []}

kitty/remote_control.py

@@ -10,7 +10,7 @@ import types
 from contextlib import suppress
 from functools import partial
 from typing import (
-    TYPE_CHECKING, Any, Dict, Generator, Iterable, List, Optional, Tuple,
+    Any, Dict, Generator, Iterable, List, Optional, Tuple,
     Union, cast
 )
 
@@ -22,14 +22,11 @@ from .rc.base import (
     PayloadGetter, all_command_names, command_for_name,
     no_response as no_response_sentinel, parse_subcommand_cli
 )
+from .typing import BossType, WindowType
 from .utils import TTYIO, parse_address_spec
 
-if TYPE_CHECKING:
-    from .boss import Boss  # noqa
-    from .window import Window  # noqa
 
-
+def handle_cmd(boss: BossType, window: Optional[WindowType], serialized_cmd: str) -> Optional[Dict[str, Any]]:
-def handle_cmd(boss: 'Boss', window: Optional['Window'], serialized_cmd: str) -> Optional[Dict[str, Any]]:
     cmd = json.loads(serialized_cmd)
     v = cmd['version']
     no_response = cmd.get('no_response', False)

kitty/session.py

@@ -4,20 +4,16 @@
 
 import shlex
 import sys
-from typing import (
+from typing import Generator, List, NamedTuple, Optional, Tuple, Union
-    TYPE_CHECKING, Generator, List, NamedTuple, Optional, Tuple, Union
-)
 
+from .cli_stub import CLIOptions
 from .config_data import to_layout_names
 from .constants import kitty_exe
 from .layout import all_layouts
 from .options_stub import Options
+from .typing import SpecialWindowInstance
 from .utils import log_error, resolved_shell
 
-if TYPE_CHECKING:
-    from .tabs import SpecialWindowInstance  # noqa
-    from .cli_stub import CLIOptions  # noqa
-
 
 class WindowSizeOpts(NamedTuple):
 
@@ -135,7 +131,7 @@ def parse_session(raw: str, opts: Options, default_title: Optional[str] = None)
 
 def create_sessions(
     opts: Options,
-    args: Optional['CLIOptions'] = None,
+    args: Optional[CLIOptions] = None,
     special_window: Optional['SpecialWindowInstance'] = None,
     cwd_from: Optional[int] = None,
     respect_cwd: bool = False,

kitty/tabs.py

@@ -7,7 +7,7 @@ from collections import deque
 from contextlib import suppress
 from functools import partial
 from typing import (
-    TYPE_CHECKING, Deque, Dict, Generator, Iterator, List, NamedTuple,
+    Deque, Dict, Generator, Iterator, List, NamedTuple,
     Optional, Pattern, Sequence, Tuple, cast
 )
 
@@ -27,13 +27,7 @@ from .options_stub import Options
 from .tab_bar import TabBar, TabBarData
 from .utils import log_error, resolved_shell
 from .window import Window, WindowDict
-
+from .typing import TypedDict, SessionTab, SessionType
-if TYPE_CHECKING:
-    from .session import Session, Tab as SessionTab
-    SessionTab, Session
-    from typing import TypedDict
-else:
-    TypedDict = dict
 
 
 class TabDict(TypedDict):
@@ -555,7 +549,7 @@ class Tab:  # {{{
 
 class TabManager:  # {{{
 
-    def __init__(self, os_window_id: int, opts: Options, args: CLIOptions, startup_session: Optional['Session'] = None):
+    def __init__(self, os_window_id: int, opts: Options, args: CLIOptions, startup_session: Optional[SessionType] = None):
         self.os_window_id = os_window_id
         self.last_active_tab_id = None
         self.opts, self.args = opts, args

kitty/typing.py

@@ -0,0 +1,21 @@
+#!/usr/bin/env python
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2020, Kovid Goyal <kovid at kovidgoyal.net>
+
+from typing import Tuple
+
+
+BossType = ChildType = TabType = WindowType = ScreenType = None
+BadLineType = KeySpec = SequenceMap = KeyActionType = None
+AddressFamily = PopenType = Socket = StartupCtx = None
+SessionTab = SessionType = LayoutType = SpecialWindowInstance = None
+MarkType = RemoteCommandType = CoreTextFont = FontConfigPattern = None
+KeyEventType = ImageManagerType = KittyCommonOpts = HandlerType = None
+GRT_t = GRT_a = GRT_d = GRT_f = GRT_m = GRT_o = None
+ScreenSize = KittensKeyActionType = MouseEvent = AbstractEventLoop = None
+TermManagerType = LoopType = Debug = GraphicsCommandType = None
+
+CompletedProcess = Tuple
+TypedDict = dict
+EdgeLiteral = str
+Protocol = object

kitty/typing.pyi

@@ -0,0 +1,51 @@
+from asyncio import AbstractEventLoop as AbstractEventLoop  # noqa
+from socket import AddressFamily as AddressFamily, socket as Socket  # noqa
+from typing import (  # noqa
+    Literal, Protocol as Protocol, TypedDict as TypedDict
+)
+
+from kittens.hints.main import Mark as MarkType  # noqa
+from kittens.tui.handler import Handler as HandlerType  # noqa
+from kittens.tui.images import (  # noqa
+    GraphicsCommand as GraphicsCommandType, ImageManager as ImageManagerType
+)
+from kittens.tui.loop import (  # noqa
+    Debug as Debug, Loop as LoopType, MouseEvent as MouseEvent,
+    TermManager as TermManagerType
+)
+from kitty.conf.utils import KittensKeyAction as KittensKeyActionType  # noqa
+
+from .boss import Boss as BossType  # noqa
+from .child import Child as ChildType  # noqa
+from .conf.utils import BadLine as BadLineType  # noqa
+from .fast_data_types import (  # noqa
+    CoreTextFont as CoreTextFont, FontConfigPattern as FontConfigPattern,
+    Screen as ScreenType, StartupCtx as StartupCtx
+)
+from .key_encoding import KeyEvent as KeyEventType  # noqa
+from .layout import Layout as LayoutType  # noqa
+from .rc.base import RemoteCommand as RemoteCommandType  # noqa
+from .session import Session as SessionType, Tab as SessionTab  # noqa
+from .tabs import (  # noqa
+    SpecialWindowInstance as SpecialWindowInstance, Tab as TabType
+)
+from .utils import ScreenSize as ScreenSize  # noqa
+from .window import Window as WindowType  # noqa
+
+from subprocess import (  # noqa; noqa
+    CompletedProcess as CompletedProcess, Popen as PopenType
+)
+
+
+from .config import (  # noqa; noqa
+    KeyAction as KeyActionType, KeyMap as KeyMap, KeySpec as KeySpec,
+    KittyCommonOpts as KittyCommonOpts, SequenceMap as SequenceMap
+)
+
+EdgeLiteral = Literal['left', 'top', 'right', 'bottom']
+GRT_a = Literal['t', 'T', 'q', 'p', 'd']
+GRT_f = Literal[24, 32, 100]
+GRT_t = Literal['d', 'f', 't', 's']
+GRT_o = Literal['z']
+GRT_m = Literal[0, 1]
+GRT_d = Literal['a', 'A', 'c', 'C', 'i', 'I', 'p', 'P', 'q', 'Q', 'x', 'X', 'y', 'Y', 'z', 'Z']

kitty/utils.py

@@ -14,8 +14,8 @@ from contextlib import suppress
 from functools import lru_cache
 from time import monotonic
 from typing import (
-    TYPE_CHECKING, Any, Callable, Dict, Generator, Iterable, List,
+    Any, Callable, Dict, Generator, Iterable, List, NamedTuple, Optional,
-    NamedTuple, Optional, Tuple, Union, cast
+    Tuple, Union, cast
 )
 
 from .constants import (
@@ -23,11 +23,7 @@ from .constants import (
 )
 from .options_stub import Options
 from .rgb import Color, to_color
-
+from .typing import AddressFamily, PopenType, Socket, StartupCtx
-if TYPE_CHECKING:
-    from subprocess import Popen  # noqa
-    from .fast_data_types import StartupCtx  # noqa
-    from socket import socket as Socket, AddressFamily  # noqa
 
 BASE = os.path.dirname(os.path.abspath(__file__))
 
@@ -182,7 +178,7 @@ def command_for_open(program: Union[str, List[str]] = 'default') -> List[str]:
     return cmd
 
 
-def open_cmd(cmd: Union[Iterable[str], List[str]], arg: Union[None, Iterable[str], str] = None, cwd: Optional[str] = None) -> 'Popen':
+def open_cmd(cmd: Union[Iterable[str], List[str]], arg: Union[None, Iterable[str], str] = None, cwd: Optional[str] = None) -> PopenType:
     import subprocess
     if arg is not None:
         cmd = list(cmd)
@@ -193,7 +189,7 @@ def open_cmd(cmd: Union[Iterable[str], List[str]], arg: Union[None, Iterable[str
     return subprocess.Popen(tuple(cmd), stdin=subprocess.DEVNULL, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, cwd=cwd or None)
 
 
-def open_url(url: str, program: Union[str, List[str]] = 'default', cwd: Optional[str] = None) -> 'Popen':
+def open_url(url: str, program: Union[str, List[str]] = 'default', cwd: Optional[str] = None) -> PopenType:
     return open_cmd(command_for_open(program), url, cwd=cwd)
 
 
@@ -367,7 +363,7 @@ class SingleInstance:
 single_instance = SingleInstance()
 
 
-def parse_address_spec(spec: str) -> Tuple['AddressFamily', Union[Tuple[str, int], str], Optional[str]]:
+def parse_address_spec(spec: str) -> Tuple[AddressFamily, Union[Tuple[str, int], str], Optional[str]]:
     import socket
     protocol, rest = spec.split(':', 1)
     socket_path = None

kitty/window.py

@@ -10,8 +10,8 @@ from collections import deque
 from enum import IntEnum
 from itertools import chain
 from typing import (
-    TYPE_CHECKING, Any, Callable, Deque, Dict, List, Optional, Pattern,
+    Any, Callable, Deque, Dict, List, Optional, Pattern, Sequence, Tuple,
-    Sequence, Tuple, Union
+    Union
 )
 
 from .child import ProcessDesc
@@ -32,20 +32,13 @@ from .keys import defines, extended_key_event, keyboard_mode_name
 from .options_stub import Options
 from .rgb import to_color
 from .terminfo import get_capabilities
+from .typing import ChildType, TabType, TypedDict
 from .utils import (
     color_as_int, get_primary_selection, load_shaders, open_cmd, open_url,
     parse_color_set, read_shell_environment, sanitize_title,
     set_primary_selection
 )
 
-if TYPE_CHECKING:
-    from .tabs import Tab
-    from .child import Child
-    from typing import TypedDict
-    Tab, Child
-else:
-    TypedDict = dict
-
 MatchPatternType = Union[Pattern[str], Tuple[Pattern[str], Optional[Pattern[str]]]]
 
 
@@ -183,8 +176,8 @@ class Window:
 
     def __init__(
         self,
-        tab: 'Tab',
+        tab: TabType,
-        child: 'Child',
+        child: ChildType,
         opts: Options,
         args: CLIOptions,
         override_title: Optional[str] = None,
@@ -207,7 +200,7 @@ class Window:
             raise Exception('No tab with id: {} in OS Window: {} was found, or the window counter wrapped'.format(tab.id, tab.os_window_id))
         self.tab_id = tab.id
         self.os_window_id = tab.os_window_id
-        self.tabref: Callable[[], Optional['Tab']] = weakref.ref(tab)
+        self.tabref: Callable[[], Optional[TabType]] = weakref.ref(tab)
         self.clipboard_control_buffers = {'p': '', 'c': ''}
         self.destroyed = False
         self.geometry = WindowGeometry(0, 0, 0, 0, 0, 0)
@@ -221,7 +214,7 @@ class Window:
         else:
             setup_colors(self.screen, opts)
 
-    def change_tab(self, tab: 'Tab') -> None:
+    def change_tab(self, tab: TabType) -> None:
         self.tab_id = tab.id
         self.os_window_id = tab.os_window_id
         self.tabref = weakref.ref(tab)