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gh-141939: Add colors to interpolated values in argparse #141940

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Merged
savannahostrowski merged 8 commits into from
Dec 12, 2025
+26 −13
Merged

gh-141939: Add colors to interpolated values in argparse #141940

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a3b5687
Add colors to interpolated values in argparse
alexprengere Nov 25, 2025
8c2b3db
Improve testing with more interpolated values
alexprengere Nov 27, 2025
04ea747
Merge branch 'main' into colored_defaults
alexprengere Nov 28, 2025
a7ca5c7
📜🤖 Added by blurb_it.
blurb-it[bot] Nov 28, 2025
802279f
Fix blurb rst formatting
alexprengere Nov 28, 2025
c31f2b7
Fix color spelling
alexprengere Dec 2, 2025
7698ac4
Merge branch 'main' into colored_defaults
alexprengere Dec 12, 2025
82c7551
Merge branch 'main' into colored_defaults
savannahostrowski Dec 12, 2025
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Merge branch 'main' into colored_defaults
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@alexprengere
alexprengere authored Dec 12, 2025
commit 7698ac483d4b3e95b71dd6e230b32eb3aa6c60e5
27 changes: 15 additions & 12 deletions Lib/argparse.py
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Original file line number Diff line number Diff line change
Expand Up @@ -742,18 +742,21 @@ def _get_help_string(self, action):
if help is None:
help = ''

if '%(default)' not in help:
if action.default is not SUPPRESS:
defaulting_nargs = [OPTIONAL, ZERO_OR_MORE]
if action.option_strings or action.nargs in defaulting_nargs:
t = self._theme
default_str = _(" (default: %(default)s)")
prefix, suffix = default_str.split("%(default)s")
help += (
f" {t.default}{prefix.lstrip()}{t.reset}"
f"%(default)s"
f"{t.default}{suffix}{t.reset}"
)
if (
'%(default)' not in help
and action.default is not SUPPRESS
and not action.required
):
defaulting_nargs = (OPTIONAL, ZERO_OR_MORE)
if action.option_strings or action.nargs in defaulting_nargs:
t = self._theme
default_str = _(" (default: %(default)s)")
prefix, suffix = default_str.split("%(default)s")
help += (
f" {t.default}{prefix.lstrip()}{t.reset}"
f"%(default)s"
f"{t.default}{suffix}{t.reset}"
)
return help


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