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[3.12] gh-128978: Fix a NameError in sysconfig.expand_makefile_vars (GH-128979) #129066

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[3.12] gh-128978: Fix a NameError in sysconfig.expand_makefile_vars (GH-128979) #129066

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3 changes: 3 additions & 0 deletions Lib/sysconfig.py
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Original file line number Diff line number Diff line change
Expand Up @@ -845,6 +845,9 @@ def expand_makefile_vars(s, vars):
"""
import re

_findvar1_rx = r"\$\(([A-Za-z][A-Za-z0-9_]*)\)"
_findvar2_rx = r"\${([A-Za-z][A-Za-z0-9_]*)}"

# This algorithm does multiple expansion, so if vars['foo'] contains
# "${bar}", it will expand ${foo} to ${bar}, and then expand
# ${bar}... and so forth. This is fine as long as 'vars' comes from
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2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Library/2025-01-18-11-04-44.gh-issue-128978.hwg7-w.rst
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@@ -0,0 +1,2 @@
Fix a :exc:`NameError` in :func:`!sysconfig.expand_makefile_vars`. Patch by
Bénédikt Tran.
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