I am done

rl/Lib/site-packages/onnx/printer.py

@@ -0,0 +1,17 @@
+# Copyright (c) ONNX Project Contributors
+#
+# SPDX-License-Identifier: Apache-2.0
+from __future__ import annotations
+
+import onnx
+import onnx.onnx_cpp2py_export.printer as C  # noqa: N812
+
+
+def to_text(proto: onnx.ModelProto | onnx.FunctionProto | onnx.GraphProto) -> str:
+    if isinstance(proto, onnx.ModelProto):
+        return C.model_to_text(proto.SerializeToString())
+    if isinstance(proto, onnx.FunctionProto):
+        return C.function_to_text(proto.SerializeToString())
+    if isinstance(proto, onnx.GraphProto):
+        return C.graph_to_text(proto.SerializeToString())
+    raise TypeError("Unsupported argument type.")