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[3.14] gh-138774: use value to ast.unparse code when str is None in ast.Interpolation (GH-139415) (#140503)

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gh-138774: use `value` to `ast.unparse` code when `str` is `None` in `ast.Interpolation` (GH-139415)
(cherry picked from commit 4d0849426f)

Co-authored-by: George Ogden <38294960+George-Ogden@users.noreply.github.com>
This commit is contained in:
Miss Islington (bot) 2025-10-23 16:39:02 +02:00 • committed by GitHub
parent d1a434f7b2
commit 564bb00b27
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4 changed files with 102 additions and 12 deletions
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7
Lib/_ast_unparse.py
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@ -658,9 +658,9 @@ def _unparse_interpolation_value(self, inner):
unparser.set_precedence(_Precedence.TEST.next(), inner)
return unparser.visit(inner)
def _write_interpolation(self, node, is_interpolation=False):
def _write_interpolation(self, node, use_str_attr=False):
with self.delimit("{", "}"):
if is_interpolation:
if use_str_attr:
expr = node.str
else:
expr = self._unparse_interpolation_value(node.value)
@ -678,7 +678,8 @@ def visit_FormattedValue(self, node):
self._write_interpolation(node)
def visit_Interpolation(self, node):
self._write_interpolation(node, is_interpolation=True)
# If `str` is set to `None`, use the `value` to generate the source code.
self._write_interpolation(node, use_str_attr=node.str is not None)
def visit_Name(self, node):
self.write(node.id)