8000 gh-128595: Default to stdout isatty for colour detection instead of stderr by hugovk · Pull Request #128498 · python/cpython · GitHub
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gh-128595: Default to stdout isatty for colour detection instead of stderr #128498

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Merged
merged 18 commits into from
Jan 20, 2025
Merged

gh-128595: Default to stdout isatty for colour detection instead of stderr #128498

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4ad090d
Add test class helper to force no terminal colour
hugovk Dec 11, 2024
ab76e1b
Refactor
hugovk Dec 11, 2024
bb90f89
Default to stdout isatty for colour detection instead of stderr
hugovk Jan 4, 2025
172f8c3
Add NEWS
hugovk Jan 7, 2025
bf31943
Merge branch 'main' into 3.14-color-default-stdout
hugovk Jan 13, 2025
b7855ad
Fix merge conflict
hugovk Jan 13, 2025
8e24cc8
Remove unused import
hugovk Jan 13, 2025
2b88c85
Check can_colorize using same output stream as traceback
hugovk Jan 9, 2025
4aa46c5
Check can_colorize using same output stream as unittest
hugovk Jan 9, 2025
d0ce622
Check get_colors using the same output stream
hugovk Jan 13, 2025
7debe69
Apply suggestions from code review
hugovk Jan 13, 2025
6faf53c
Add missing parenthesis
hugovk Jan 13, 2025
e1547d0
Name the argument
hugovk Jan 13, 2025
7612bff
Also print skips to stderr
hugovk Jan 13, 2025
44828f0
Check file not sys.stdout
hugovk Jan 14, 2025
36eb18e
file=stream
hugovk Jan 14, 2025
f5857b5
Print to stdout
hugovk Jan 14, 2025
3047d2a
Log skipped to stdout, log failures to stderr
hugovk Jan 14, 2025
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Check can_colorize using same output stream as traceback
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@hugovk
hugovk committed Jan 13, 2025
commit 2b88c85e729fdc7cbdf5390c95ed4373768d1c69
9 changes: 6 additions & 3 deletions Lib/_colorize.py
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Expand Up @@ -33,7 +33,10 @@ def get_colors(colorize: bool = False) -> ANSIColors:
return NoColors


def can_colorize() -> bool:
def can_colorize(*, file=None) -> bool:
if file is None:
file = sys.stdout

if not sys.flags.ignore_environment:
if os.environ.get("PYTHON_COLORS") == "0":
return False
Expand All @@ -49,7 +52,7 @@ def can_colorize() -> bool:
if os.environ.get("TERM") == "dumb":
return False

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

if sys.platform == "win32":
Expand All @@ -62,6 +65,6 @@ def can_colorize() -> bool:
return False

try:
return os.isatty(sys.stdout.fileno())
return os.isatty(file.fileno())
except io.UnsupportedOperation:
return sys.stdout.isatty()
2 changes: 1 addition & 1 deletion Lib/traceback.py
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Expand Up @@ -135,7 +135,7 @@ def print_exception(exc, /, value=_sentinel, tb=_sentinel, limit=None, \

def _print_exception_bltin(exc, /):
file = sys.stderr if sys.stderr is not None else sys.__stderr__
colorize = _colorize.can_colorize()
colorize = _colorize.can_colorize(file=file)
return print_exception(exc, limit=BUILTIN_EXCEPTION_LIMIT, file=file, colorize=colorize)


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