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correctly match free-threaded python versions #999

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Merged
henryiii merged 1 commit into from
Oct 8, 2025
Merged

correctly match free-threaded python versions #999

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5 changes: 3 additions & 2 deletions nox/virtualenv.py
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Original file line number Diff line number Diff line change
Expand Up @@ -622,10 +622,11 @@ def _resolved_interpreter(self) -> str:

# If this is just a X, X.Y, or X.Y.Z string, extract just the X / X.Y
# part and add Python to the front of it.
match = re.match(r"^(?P<xy_ver>\d(\.\d+)?)(\.\d+)?$", self.interpreter)
match = re.match(r"^(?P<xy_ver>\d(\.\d+)?)(\.\d+)?(?P<t>t?)$", self.interpreter)
if match:
xy_version = match.group("xy_ver")
cleaned_interpreter = f"python{xy_version}"
t = match.group("t")
cleaned_interpreter = f"python{xy_version}{t}"

# If the cleaned interpreter is on the PATH, go ahead and return it.
if shutil.which(cleaned_interpreter):
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2 changes: 2 additions & 0 deletions tests/test_virtualenv.py
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Expand Up @@ -1097,6 +1097,8 @@ def test__resolved_interpreter_none(
("3.6.2", "python3.6"),
("3.10", "python3.10"),
("2.7.15", "python2.7"),
("3.13t", "python3.13t"),
("3.14.1t", "python3.14t"),
],
)
@mock.patch("nox.virtualenv._PLATFORM", new="linux")
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