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Fix: preserve Python variable name for returned input aliases #2788

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Fix: preserve Python variable name for returned input aliases #2788

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a2dc703
Fix: preserve Python variable name for returned input aliases
Aniketsy Feb 2, 2026
ee6eed8
Merge remote-tracking branch 'upstream/main' into fix-2714
Aniketsy Feb 3, 2026
90b45cc
Fix: preserve Python variable name for returned input aliases
Aniketsy Feb 3, 2026
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7 changes: 5 additions & 2 deletions onnxscript/_internal/converter.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1101,11 +1101,14 @@ def ret(exp, i, suffix):
if val.value.is_graph_input():
# In ONNX, a graph-input cannot be an output of the graph.
# We need to insert a copy.
return_var = self._emit_copy(return_var, preferred_name)
suggested_name = preferred_name
if isinstance(exp, ast.Name):
suggested_name = exp.id
return_var = self._emit_copy(return_var, suggested_name)
for prev_output in self._current_fn.outputs:
if prev_output.name == return_var.name:
# ONNX does not allow duplicate output names.
return_var = self._emit_copy(return_var, f"{return_var}_copy")
return_var = self._emit_copy(return_var, f"{return_var.name}_copy")
break
if self.returntype is not None:
set_type_info(return_var, self.returntype[i])
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