westonpace commented on code in PR #14024:
URL: https://github.com/apache/arrow/pull/14024#discussion_r962420622


##########
python/pyarrow/_substrait.pyx:
##########
@@ -25,14 +26,84 @@ from pyarrow.includes.libarrow cimport *
 from pyarrow.includes.libarrow_substrait cimport *
 
 
-def run_query(plan):
+cdef shared_ptr[CTable] _process_named_table(dict named_args, const 
std_vector[c_string]& names):
+    cdef:
+        c_string c_name
+        shared_ptr[CTable] empty_table
+    py_names = []
+
+    # provider function could raise an exception
+    try:
+        for i in range(names.size()):
+            c_name = names[i]
+            py_names.append(frombytes(c_name))
+        return pyarrow_unwrap_table(named_args["provider"](py_names))
+    except Exception:
+        return empty_table

Review Comment:
   BindFunction used SafeCallIntoPython.  I  think what you suggested was good.



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