impala-shell with Python 3 mangles binary output

CREATE TABLE complex_datatype (A INT, b BINARY);
INSERT INTO complex_datatype VALUES (1, CAST("a" as BINARY)), (2, CAST("8" as BINARY)), (3, CAST(NULL as BINARY));

$ IMPALA_PYTHON_EXECUTABLE=python3 impala-shell.sh -q 'select * from complex_datatype'
...
+---+------+
| a | b    |
+---+------+
| 1 | b'a' |
| 2 | b'8' |
| 3 | NULL |
+---+------+
Fetched 3 row(s) in 0.11s

+---+------+
| a | b    |
+---+------+
| 1 | a    |
| 2 | 8    |
| 3 | NULL |
+---+------+