from typing import Dict, Tuple, Union

from .keys import Keys

# Mapping of vt100 escape codes to Keys.
ANSI_SEQUENCES: Dict[str, Tuple[Keys, ...]] = {
    # Control keys.
    "\x00": (Keys.ControlAt,),  # Control-At (Also for Ctrl-Space)
    "\x01": (Keys.ControlA,),  # Control-A (home)

            

Reported by Pylint.

              from typing import Dict, Tuple, Union

from .keys import Keys

# Mapping of vt100 escape codes to Keys.
ANSI_SEQUENCES: Dict[str, Tuple[Keys, ...]] = {
    # Control keys.
    "\x00": (Keys.ControlAt,),  # Control-At (Also for Ctrl-Space)
    "\x01": (Keys.ControlA,),  # Control-A (home)

            

Reported by Pylint.

              from typing import Dict, Tuple, Union

from .keys import Keys

# Mapping of vt100 escape codes to Keys.
ANSI_SEQUENCES: Dict[str, Tuple[Keys, ...]] = {
    # Control keys.
    "\x00": (Keys.ControlAt,),  # Control-At (Also for Ctrl-Space)
    "\x01": (Keys.ControlA,),  # Control-A (home)

            

Reported by Pylint.

              if sys.version_info >= (3, 8):
    from typing import Protocol
else:
    from typing_extensions import Protocol  # pragma: no cover


class Edge(Protocol):
    """Any object that defines an edge (such as Layout)."""


            

Reported by Pylint.

              from __future__ import annotations

import sys
from fractions import Fraction
from typing import cast, List, Optional, Sequence

if sys.version_info >= (3, 8):
    from typing import Protocol
else:

            

Reported by Pylint.

                  from typing_extensions import Protocol  # pragma: no cover


class Edge(Protocol):
    """Any object that defines an edge (such as Layout)."""

    size: Optional[int] = None
    fraction: int = 1
    min_size: int = 1

            

Reported by Pylint.

              from typing import Iterable, Tuple, TypeVar

T = TypeVar("T")


def loop_first(values: Iterable[T]) -> Iterable[Tuple[bool, T]]:
    """Iterate and generate a tuple with a flag for first value."""
    iter_values = iter(values)
    try:

            

Reported by Pylint.

              from typing import Iterable, Tuple, TypeVar

T = TypeVar("T")


def loop_first(values: Iterable[T]) -> Iterable[Tuple[bool, T]]:
    """Iterate and generate a tuple with a flag for first value."""
    iter_values = iter(values)
    try:

            

Reported by Pylint.

              from contextvars import ContextVar

if TYPE_CHECKING:
    from .app import App

active_app: ContextVar["App"] = ContextVar("active_app")

            

Reported by Pylint.

              from typing import TYPE_CHECKING

from contextvars import ContextVar

if TYPE_CHECKING:
    from .app import App

active_app: ContextVar["App"] = ContextVar("active_app")

            

Reported by Pylint.

              from __future__ import annotations

from functools import lru_cache

from inspect import signature, isawaitable
from typing import Any, Callable


@lru_cache(maxsize=2048)

            

Reported by Pylint.

              import contextlib
from typing import Generator

from . import log


@contextlib.contextmanager
def timer(subject: str = "time") -> Generator[None, None, None]:
    """print the elapsed time. (only used in debugging)"""

            

Reported by Pylint.

              import re

from typing import Match, Pattern


def camel_to_snake(
    name: str, _re_snake: Pattern[str] = re.compile("[a-z][A-Z]")
) -> str:
    """Convert name from CamelCase to snake_case.

            

Reported by Pylint.