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gh-143201: warnings writes the full source line instead of the truncated one #143202

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gh-143201: warnings writes the full source line instead of the truncated one #143202

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1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Core_and_Builtins/2025-12-26-17-18-18.gh-issue-143201.UbXuX4.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Print out the truncated line, not the raw sourceline.
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@ZeroIntensity ZeroIntensity Dec 26, 2025

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This needs some more context; please add something about this being related to warnings.

2 changes: 1 addition & 1 deletion Python/_warnings.c
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Expand Up @@ -697,7 +697,7 @@ show_warning(PyThreadState *tstate, PyObject *filename, int lineno,
if (truncated == NULL)
goto error;

PyFile_WriteObject(sourceline, f_stderr, Py_PRINT_RAW);
PyFile_WriteObject(truncated, f_stderr, Py_PRINT_RAW);
Py_DECREF(truncated);
PyFile_WriteString("\n", f_stderr);
}
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