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[BUG] NO_COLOR enviroment variable not respected for timestamp in rich logging #2100

@swaldhoer

Description

@swaldhoer

The TERM=dumb environment variable is respected for rich-logging, but the NO_COLOR=1 environment variable not.

NO_COLOR is just respected for the logging type (e.g., INFO), but not for the timestamp.

Run the following commands with the settings for TERM and NO_COLOR and you will see the bug yourself:

import logging
from rich.logging import RichHandler
logging.basicConfig(level="NOTSET", format="%(message)s", datefmt="[%X]", handlers=[RichHandler()])
log = logging.getLogger("rich")
log.info("Hello, World!")

And here is a screenshot of the above mentioned code run:
image

image

Platform

Click to expand

Windows 10, Windows Terminal, PowerShell Core
Windows 10, Windows Terminal, cmd.exe

C:\> python -m rich.diagnose
╭───────────────────────── <class 'rich.console.Console'> ─────────────────────────╮
│ A high level console interface.                                                  │
│                                                                                  │
│ ╭──────────────────────────────────────────────────────────────────────────────╮ │
│ │ <console width=138 ColorSystem.TRUECOLOR>                                    │ │
│ ╰──────────────────────────────────────────────────────────────────────────────╯ │
│                                                                                  │
│     color_system = 'truecolor'                                                   │
│         encoding = 'utf-8'                                                       │
│             file = <_io.TextIOWrapper name='<stdout>' mode='w' encoding='utf-8'> │
│           height = 37                                                            │
│    is_alt_screen = False                                                         │
│ is_dumb_terminal = False                                                         │
│   is_interactive = True                                                          │
│       is_jupyter = False                                                         │
│      is_terminal = True                                                          │
│   legacy_windows = False                                                         │
│         no_color = False                                                         │
│          options = ConsoleOptions(                                               │
│                        size=ConsoleDimensions(width=138, height=37),             │
│                        legacy_windows=False,                                     │
│                        min_width=1,                                              │
│                        max_width=138,                                            │
│                        is_terminal=True,                                         │
│                        encoding='utf-8',                                         │
│                        max_height=37,                                            │
│                        justify=None,                                             │
│                        overflow=None,                                            │
│                        no_wrap=False,                                            │
│                        highlight=None,                                           │
│                        markup=None,                                              │
│                        height=None                                               │
│                    )                                                             │
│            quiet = False                                                         │
│           record = False                                                         │
│         safe_box = True                                                          │
│             size = ConsoleDimensions(width=138, height=37)                       │
│        soft_wrap = False                                                         │
│           stderr = False                                                         │
│            style = None                                                          │
│         tab_size = 8                                                             │
│            width = 138                                                           │
╰──────────────────────────────────────────────────────────────────────────────────╯
╭── <class 'rich._windows.WindowsConsoleFeatures'> ───╮
│ Windows features available.                         │
│                                                     │
│ ╭─────────────────────────────────────────────────╮ │
│ │ WindowsConsoleFeatures(vt=True, truecolor=True) │ │
│ ╰─────────────────────────────────────────────────╯ │
│                                                     │
│ truecolor = True                                    │
│        vt = True                                    │
╰─────────────────────────────────────────────────────╯
╭────── Environment Variables ───────╮
│ {                                  │
│     'TERM': None,                  │
│     'COLORTERM': None,             │
│     'CLICOLOR': None,              │
│     'NO_COLOR': None,              │
│     'TERM_PROGRAM': None,          │
│     'COLUMNS': '138',              │
│     'LINES': None,                 │
│     'JPY_PARENT_PID': None,        │
│     'VSCODE_VERBOSE_LOGGING': None │
│ }                                  │
╰────────────────────────────────────╯
platform="Windows"
C:\> pip freeze | findstr rich
rich==12.0.0

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