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Editing: _colorize.py

from __future__ import annotations
import os
import sys

COLORIZE = True

# types
if False:
    from typing import IO

class ANSIColors:
    RESET = "\x1b[0m"

BLACK = "\x1b[30m"
    BLUE = "\x1b[34m"
    CYAN = "\x1b[36m"
    GREEN = "\x1b[32m"
    MAGENTA = "\x1b[35m"
    RED = "\x1b[31m"
    WHITE = "\x1b[37m"  # more like LIGHT GRAY
    YELLOW = "\x1b[33m"

BOLD_BLACK = "\x1b[1;30m"  # DARK GRAY
    BOLD_BLUE = "\x1b[1;34m"
    BOLD_CYAN = "\x1b[1;36m"
    BOLD_GREEN = "\x1b[1;32m"
    BOLD_MAGENTA = "\x1b[1;35m"
    BOLD_RED = "\x1b[1;31m"
    BOLD_WHITE = "\x1b[1;37m"  # actual WHITE
    BOLD_YELLOW = "\x1b[1;33m"

# intense = like bold but without being bold
    INTENSE_BLACK = "\x1b[90m"
    INTENSE_BLUE = "\x1b[94m"
    INTENSE_CYAN = "\x1b[96m"
    INTENSE_GREEN = "\x1b[92m"
    INTENSE_MAGENTA = "\x1b[95m"
    INTENSE_RED = "\x1b[91m"
    INTENSE_WHITE = "\x1b[97m"
    INTENSE_YELLOW = "\x1b[93m"

BACKGROUND_BLACK = "\x1b[40m"
    BACKGROUND_BLUE = "\x1b[44m"
    BACKGROUND_CYAN = "\x1b[46m"
    BACKGROUND_GREEN = "\x1b[42m"
    BACKGROUND_MAGENTA = "\x1b[45m"
    BACKGROUND_RED = "\x1b[41m"
    BACKGROUND_WHITE = "\x1b[47m"
    BACKGROUND_YELLOW = "\x1b[43m"

INTENSE_BACKGROUND_BLACK = "\x1b[100m"
    INTENSE_BACKGROUND_BLUE = "\x1b[104m"
    INTENSE_BACKGROUND_CYAN = "\x1b[106m"
    INTENSE_BACKGROUND_GREEN = "\x1b[102m"
    INTENSE_BACKGROUND_MAGENTA = "\x1b[105m"
    INTENSE_BACKGROUND_RED = "\x1b[101m"
    INTENSE_BACKGROUND_WHITE = "\x1b[107m"
    INTENSE_BACKGROUND_YELLOW = "\x1b[103m"

NoColors = ANSIColors()

for attr in dir(NoColors):
    if not attr.startswith("__"):
        setattr(NoColors, attr, "")

def get_colors(
    colorize: bool = False, *, file: IO[str] | IO[bytes] | None = None
) -> ANSIColors:
    if colorize or can_colorize(file=file):
        return ANSIColors()
    else:
        return NoColors

def can_colorize(*, file: IO[str] | IO[bytes] | None = None) -> bool:

def _safe_getenv(k: str, fallback: str | None = None) -> str | None:
        """Exception-safe environment retrieval. See gh-128636."""
        try:
            return os.environ.get(k, fallback)
        except Exception:
            return fallback

if file is None:
        file = sys.stdout

if not sys.flags.ignore_environment:
        if _safe_getenv("PYTHON_COLORS") == "0":
            return False
        if _safe_getenv("PYTHON_COLORS") == "1":
            return True
    if _safe_getenv("NO_COLOR"):
        return False
    if not COLORIZE:
        return False
    if _safe_getenv("FORCE_COLOR"):
        return True
    if _safe_getenv("TERM") == "dumb":
        return False

if not hasattr(file, "fileno"):
        return False

if sys.platform == "win32":
        try:
            import nt

if not nt._supports_virtual_terminal():
                return False
        except (ImportError, AttributeError):
            return False

try:
        return os.isatty(file.fileno())
    except OSError:
        return hasattr(file, "isatty") and file.isatty()

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