path: root/src/pl/plpython/expected/plpython_types.out

--
-- Test data type behavior
--
--
-- Base/common types
--
CREATE FUNCTION test_type_conversion_bool(x bool) RETURNS bool AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_bool(true);
INFO:  (True, <class 'bool'>)
 test_type_conversion_bool 
---------------------------
 t
(1 row)

SELECT * FROM test_type_conversion_bool(false);
INFO:  (False, <class 'bool'>)
 test_type_conversion_bool 
---------------------------
 f
(1 row)

SELECT * FROM test_type_conversion_bool(null);
INFO:  (None, <class 'NoneType'>)
 test_type_conversion_bool 
---------------------------
 
(1 row)

-- test various other ways to express Booleans in Python
CREATE FUNCTION test_type_conversion_bool_other(n int) RETURNS bool AS $$
# numbers
if n == 0:
   ret = 0
elif n == 1:
   ret = 5
# strings
elif n == 2:
   ret = ''
elif n == 3:
   ret = 'fa' # true in Python, false in PostgreSQL
# containers
elif n == 4:
   ret = []
elif n == 5:
   ret = [0]
plpy.info(ret, not not ret)
return ret
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_bool_other(0);
INFO:  (0, False)
 test_type_conversion_bool_other 
---------------------------------
 f
(1 row)

SELECT * FROM test_type_conversion_bool_other(1);
INFO:  (5, True)
 test_type_conversion_bool_other 
---------------------------------
 t
(1 row)

SELECT * FROM test_type_conversion_bool_other(2);
INFO:  ('', False)
 test_type_conversion_bool_other 
---------------------------------
 f
(1 row)

SELECT * FROM test_type_conversion_bool_other(3);
INFO:  ('fa', True)
 test_type_conversion_bool_other 
---------------------------------
 t
(1 row)

SELECT * FROM test_type_conversion_bool_other(4);
INFO:  ([], False)
 test_type_conversion_bool_other 
---------------------------------
 f
(1 row)

SELECT * FROM test_type_conversion_bool_other(5);
INFO:  ([0], True)
 test_type_conversion_bool_other 
---------------------------------
 t
(1 row)

CREATE FUNCTION test_type_conversion_char(x char) RETURNS char AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_char('a');
INFO:  ('a', <class 'str'>)
 test_type_conversion_char 
---------------------------
 a
(1 row)

SELECT * FROM test_type_conversion_char(null);
INFO:  (None, <class 'NoneType'>)
 test_type_conversion_char 
---------------------------
 
(1 row)

CREATE FUNCTION test_type_conversion_int2(x int2) RETURNS int2 AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_int2(100::int2);
INFO:  (100, <class 'int'>)
 test_type_conversion_int2 
---------------------------
                       100
(1 row)

SELECT * FROM test_type_conversion_int2(-100::int2);
INFO:  (-100, <class 'int'>)
 test_type_conversion_int2 
---------------------------
                      -100
(1 row)

SELECT * FROM test_type_conversion_int2(null);
INFO:  (None, <class 'NoneType'>)
 test_type_conversion_int2 
---------------------------
                          
(1 row)

CREATE FUNCTION test_type_conversion_int4(x int4) RETURNS int4 AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_int4(100);
INFO:  (100, <class 'int'>)
 test_type_conversion_int4 
---------------------------
                       100
(1 row)

SELECT * FROM test_type_conversion_int4(-100);
INFO:  (-100, <class 'int'>)
 test_type_conversion_int4 
---------------------------
                      -100
(1 row)

SELECT * FROM test_type_conversion_int4(null);
INFO:  (None, <class 'NoneType'>)
 test_type_conversion_int4 
---------------------------
                          
(1 row)

CREATE FUNCTION test_type_conversion_int8(x int8) RETURNS int8 AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_int8(100);
INFO:  (100, <class 'int'>)
 test_type_conversion_int8 
---------------------------
                       100
(1 row)

SELECT * FROM test_type_conversion_int8(-100);
INFO:  (-100, <class 'int'>)
 test_type_conversion_int8 
---------------------------
                      -100
(1 row)

SELECT * FROM test_type_conversion_int8(5000000000);
INFO:  (5000000000, <class 'int'>)
 test_type_conversion_int8 
---------------------------
                5000000000
(1 row)

SELECT * FROM test_type_conversion_int8(null);
INFO:  (None, <class 'NoneType'>)
 test_type_conversion_int8 
---------------------------
                          
(1 row)

CREATE FUNCTION test_type_conversion_numeric(x numeric) RETURNS numeric AS $$
# print just the class name, not the type, to avoid differences
# between decimal and cdecimal
plpy.info(str(x), x.__class__.__name__)
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_numeric(100);
INFO:  ('100', 'Decimal')
 test_type_conversion_numeric 
------------------------------
                          100
(1 row)

SELECT * FROM test_type_conversion_numeric(-100);
INFO:  ('-100', 'Decimal')
 test_type_conversion_numeric 
------------------------------
                         -100
(1 row)

SELECT * FROM test_type_conversion_numeric(100.0);
INFO:  ('100.0', 'Decimal')
 test_type_conversion_numeric 
------------------------------
                        100.0
(1 row)

SELECT * FROM test_type_conversion_numeric(100.00);
INFO:  ('100.00', 'Decimal')
 test_type_conversion_numeric 
------------------------------
                       100.00
(1 row)

SELECT * FROM test_type_conversion_numeric(5000000000.5);
INFO:  ('5000000000.5', 'Decimal')
 test_type_conversion_numeric 
------------------------------
                 5000000000.5
(1 row)

SELECT * FROM test_type_conversion_numeric(1234567890.0987654321);
INFO:  ('1234567890.0987654321', 'Decimal')
 test_type_conversion_numeric 
------------------------------
        1234567890.0987654321
(1 row)

SELECT * FROM test_type_conversion_numeric(-1234567890.0987654321);
INFO:  ('-1234567890.0987654321', 'Decimal')
 test_type_conversion_numeric 
------------------------------
       -1234567890.0987654321
(1 row)

SELECT * FROM test_type_conversion_numeric(null);
INFO:  ('None', 'NoneType')
 test_type_conversion_numeric 
------------------------------
                             
(1 row)

CREATE FUNCTION test_type_conversion_float4(x float4) RETURNS float4 AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_float4(100);
INFO:  (100.0, <class 'float'>)
 test_type_conversion_float4 
-----------------------------
                         100
(1 row)

SELECT * FROM test_type_conversion_float4(-100);
INFO:  (-100.0, <class 'float'>)
 test_type_conversion_float4 
-----------------------------
                        -100
(1 row)

SELECT * FROM test_type_conversion_float4(5000.5);
INFO:  (5000.5, <class 'float'>)
 test_type_conversion_float4 
-----------------------------
                      5000.5
(1 row)

SELECT * FROM test_type_conversion_float4(null);
INFO:  (None, <class 'NoneType'>)
 test_type_conversion_float4 
-----------------------------
                            
(1 row)

CREATE FUNCTION test_type_conversion_float8(x float8) RETURNS float8 AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_float8(100);
INFO:  (100.0, <class 'float'>)
 test_type_conversion_float8 
-----------------------------
                         100
(1 row)

SELECT * FROM test_type_conversion_float8(-100);
INFO:  (-100.0, <class 'float'>)
 test_type_conversion_float8 
-----------------------------
                        -100
(1 row)

SELECT * FROM test_type_conversion_float8(5000000000.5);
INFO:  (5000000000.5, <class 'float'>)
 test_type_conversion_float8 
-----------------------------
                5000000000.5
(1 row)

SELECT * FROM test_type_conversion_float8(null);
INFO:  (None, <class 'NoneType'>)
 test_type_conversion_float8 
-----------------------------
                            
(1 row)

SELECT * FROM test_type_conversion_float8(100100100.654321);
INFO:  (100100100.654321, <class 'float'>)
 test_type_conversion_float8 
-----------------------------
            100100100.654321
(1 row)

CREATE FUNCTION test_type_conversion_oid(x oid) RETURNS oid AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_oid(100);
INFO:  (100, <class 'int'>)
 test_type_conversion_oid 
--------------------------
                      100
(1 row)

SELECT * FROM test_type_conversion_oid(2147483649);
INFO:  (2147483649, <class 'int'>)
 test_type_conversion_oid 
--------------------------
               2147483649
(1 row)

SELECT * FROM test_type_conversion_oid(null);
INFO:  (None, <class 'NoneType'>)
 test_type_conversion_oid 
--------------------------
                         
(1 row)

CREATE FUNCTION test_type_conversion_text(x text) RETURNS text AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_text('hello world');
INFO:  ('hello world', <class 'str'>)
 test_type_conversion_text 
---------------------------
 hello world
(1 row)

SELECT * FROM test_type_conversion_text(null);
INFO:  (None, <class 'NoneType'>)
 test_type_conversion_text 
---------------------------
 
(1 row)

CREATE FUNCTION test_type_conversion_bytea(x bytea) RETURNS bytea AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_bytea('hello world');
INFO:  (b'hello world', <class 'bytes'>)
 test_type_conversion_bytea 
----------------------------
 \x68656c6c6f20776f726c64
(1 row)

SELECT * FROM test_type_conversion_bytea(E'null\\000byte');
INFO:  (b'null\x00byte', <class 'bytes'>)
 test_type_conversion_bytea 
----------------------------
 \x6e756c6c0062797465
(1 row)

SELECT * FROM test_type_conversion_bytea(null);
INFO:  (None, <class 'NoneType'>)
 test_type_conversion_bytea 
----------------------------
 
(1 row)

CREATE FUNCTION test_type_marshal() RETURNS bytea AS $$
import marshal
return marshal.dumps('hello world')
$$ LANGUAGE plpython3u;
CREATE FUNCTION test_type_unmarshal(x bytea) RETURNS text AS $$
import marshal
try:
    return marshal.loads(x)
except ValueError as e:
    return 'FAILED: ' + str(e)
$$ LANGUAGE plpython3u;
SELECT test_type_unmarshal(x) FROM test_type_marshal() x;
 test_type_unmarshal 
---------------------
 hello world
(1 row)

--
-- Domains
--
CREATE DOMAIN booltrue AS bool CHECK (VALUE IS TRUE OR VALUE IS NULL);
CREATE FUNCTION test_type_conversion_booltrue(x booltrue, y bool) RETURNS booltrue AS $$
return y
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_booltrue(true, true);
 test_type_conversion_booltrue 
-------------------------------
 t
(1 row)

SELECT * FROM test_type_conversion_booltrue(false, true);
ERROR:  value for domain booltrue violates check constraint "booltrue_check"
SELECT * FROM test_type_conversion_booltrue(true, false);
ERROR:  value for domain booltrue violates check constraint "booltrue_check"
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_booltrue"
CREATE DOMAIN uint2 AS int2 CHECK (VALUE >= 0);
CREATE FUNCTION test_type_conversion_uint2(x uint2, y int) RETURNS uint2 AS $$
plpy.info(x, type(x))
return y
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_uint2(100::uint2, 50);
INFO:  (100, <class 'int'>)
 test_type_conversion_uint2 
----------------------------
                         50
(1 row)

SELECT * FROM test_type_conversion_uint2(100::uint2, -50);
INFO:  (100, <class 'int'>)
ERROR:  value for domain uint2 violates check constraint "uint2_check"
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_uint2"
SELECT * FROM test_type_conversion_uint2(null, 1);
INFO:  (None, <class 'NoneType'>)
 test_type_conversion_uint2 
----------------------------
                          1
(1 row)

CREATE DOMAIN nnint AS int CHECK (VALUE IS NOT NULL);
CREATE FUNCTION test_type_conversion_nnint(x nnint, y int) RETURNS nnint AS $$
return y
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_nnint(10, 20);
 test_type_conversion_nnint 
----------------------------
                         20
(1 row)

SELECT * FROM test_type_conversion_nnint(null, 20);
ERROR:  value for domain nnint violates check constraint "nnint_check"
SELECT * FROM test_type_conversion_nnint(10, null);
ERROR:  value for domain nnint violates check constraint "nnint_check"
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_nnint"
CREATE DOMAIN bytea10 AS bytea CHECK (octet_length(VALUE) = 10 AND VALUE IS NOT NULL);
CREATE FUNCTION test_type_conversion_bytea10(x bytea10, y bytea) RETURNS bytea10 AS $$
plpy.info(x, type(x))
return y
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_bytea10('hello wold', 'hello wold');
INFO:  (b'hello wold', <class 'bytes'>)
 test_type_conversion_bytea10 
------------------------------
 \x68656c6c6f20776f6c64
(1 row)

SELECT * FROM test_type_conversion_bytea10('hello world', 'hello wold');
ERROR:  value for domain bytea10 violates check constraint "bytea10_check"
SELECT * FROM test_type_conversion_bytea10('hello word', 'hello world');
INFO:  (b'hello word', <class 'bytes'>)
ERROR:  value for domain bytea10 violates check constraint "bytea10_check"
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_bytea10"
SELECT * FROM test_type_conversion_bytea10(null, 'hello word');
ERROR:  value for domain bytea10 violates check constraint "bytea10_check"
SELECT * FROM test_type_conversion_bytea10('hello word', null);
INFO:  (b'hello word', <class 'bytes'>)
ERROR:  value for domain bytea10 violates check constraint "bytea10_check"
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_bytea10"
--
-- Arrays
--
CREATE FUNCTION test_type_conversion_array_int4(x int4[]) RETURNS int4[] AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_array_int4(ARRAY[0, 100]);
INFO:  ([0, 100], <class 'list'>)
 test_type_conversion_array_int4 
---------------------------------
 {0,100}
(1 row)

SELECT * FROM test_type_conversion_array_int4(ARRAY[0,-100,55]);
INFO:  ([0, -100, 55], <class 'list'>)
 test_type_conversion_array_int4 
---------------------------------
 {0,-100,55}
(1 row)

SELECT * FROM test_type_conversion_array_int4(ARRAY[NULL,1]);
INFO:  ([None, 1], <class 'list'>)
 test_type_conversion_array_int4 
---------------------------------
 {NULL,1}
(1 row)

SELECT * FROM test_type_conversion_array_int4(ARRAY[]::integer[]);
INFO:  ([], <class 'list'>)
 test_type_conversion_array_int4 
---------------------------------
 {}
(1 row)

SELECT * FROM test_type_conversion_array_int4(NULL);
INFO:  (None, <class 'NoneType'>)
 test_type_conversion_array_int4 
---------------------------------
 
(1 row)

SELECT * FROM test_type_conversion_array_int4(ARRAY[[1,2,3],[4,5,6]]);
INFO:  ([[1, 2, 3], [4, 5, 6]], <class 'list'>)
 test_type_conversion_array_int4 
---------------------------------
 {{1,2,3},{4,5,6}}
(1 row)

SELECT * FROM test_type_conversion_array_int4(ARRAY[[[1,2,NULL],[NULL,5,6]],[[NULL,8,9],[10,11,12]]]);
INFO:  ([[[1, 2, None], [None, 5, 6]], [[None, 8, 9], [10, 11, 12]]], <class 'list'>)
          test_type_conversion_array_int4          
---------------------------------------------------
 {{{1,2,NULL},{NULL,5,6}},{{NULL,8,9},{10,11,12}}}
(1 row)

SELECT * FROM test_type_conversion_array_int4('[2:4]={1,2,3}');
INFO:  ([1, 2, 3], <class 'list'>)
 test_type_conversion_array_int4 
---------------------------------
 {1,2,3}
(1 row)

CREATE FUNCTION test_type_conversion_array_int8(x int8[]) RETURNS int8[] AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_array_int8(ARRAY[[[1,2,NULL],[NULL,5,6]],[[NULL,8,9],[10,11,12]]]::int8[]);
INFO:  ([[[1, 2, None], [None, 5, 6]], [[None, 8, 9], [10, 11, 12]]], <class 'list'>)
          test_type_conversion_array_int8          
---------------------------------------------------
 {{{1,2,NULL},{NULL,5,6}},{{NULL,8,9},{10,11,12}}}
(1 row)

CREATE FUNCTION test_type_conversion_array_date(x date[]) RETURNS date[] AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_array_date(ARRAY[[['2016-09-21','2016-09-22',NULL],[NULL,'2016-10-21','2016-10-22']],
            [[NULL,'2016-11-21','2016-10-21'],['2015-09-21','2015-09-22','2014-09-21']]]::date[]);
INFO:  ([[['09-21-2016', '09-22-2016', None], [None, '10-21-2016', '10-22-2016']], [[None, '11-21-2016', '10-21-2016'], ['09-21-2015', '09-22-2015', '09-21-2014']]], <class 'list'>)
                                                 test_type_conversion_array_date                                                 
---------------------------------------------------------------------------------------------------------------------------------
 {{{09-21-2016,09-22-2016,NULL},{NULL,10-21-2016,10-22-2016}},{{NULL,11-21-2016,10-21-2016},{09-21-2015,09-22-2015,09-21-2014}}}
(1 row)

CREATE FUNCTION test_type_conversion_array_timestamp(x timestamp[]) RETURNS timestamp[] AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_array_timestamp(ARRAY[[['2016-09-21 15:34:24.078792-04','2016-10-22 11:34:24.078795-04',NULL],
            [NULL,'2016-10-21 11:34:25.078792-04','2016-10-21 11:34:24.098792-04']],
            [[NULL,'2016-01-21 11:34:24.078792-04','2016-11-21 11:34:24.108792-04'],
            ['2015-09-21 11:34:24.079792-04','2014-09-21 11:34:24.078792-04','2013-09-21 11:34:24.078792-04']]]::timestamp[]);
INFO:  ([[['Wed Sep 21 15:34:24.078792 2016', 'Sat Oct 22 11:34:24.078795 2016', None], [None, 'Fri Oct 21 11:34:25.078792 2016', 'Fri Oct 21 11:34:24.098792 2016']], [[None, 'Thu Jan 21 11:34:24.078792 2016', 'Mon Nov 21 11:34:24.108792 2016'], ['Mon Sep 21 11:34:24.079792 2015', 'Sun Sep 21 11:34:24.078792 2014', 'Sat Sep 21 11:34:24.078792 2013']]], <class 'list'>)
                                                                                                                                                      test_type_conversion_array_timestamp                                                                                                                                                      
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 {{{"Wed Sep 21 15:34:24.078792 2016","Sat Oct 22 11:34:24.078795 2016",NULL},{NULL,"Fri Oct 21 11:34:25.078792 2016","Fri Oct 21 11:34:24.098792 2016"}},{{NULL,"Thu Jan 21 11:34:24.078792 2016","Mon Nov 21 11:34:24.108792 2016"},{"Mon Sep 21 11:34:24.079792 2015","Sun Sep 21 11:34:24.078792 2014","Sat Sep 21 11:34:24.078792 2013"}}}
(1 row)

CREATE OR REPLACE FUNCTION pyreturnmultidemint4(h int4, i int4, j int4, k int4 ) RETURNS int4[] AS $BODY$
m = [[[[x for x in range(h)] for y in range(i)] for z in range(j)] for w in range(k)]
plpy.info(m, type(m))
return m
$BODY$ LANGUAGE plpython3u;
select pyreturnmultidemint4(8,5,3,2);
INFO:  ([[[[0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7]], [[0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7]], [[0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7]]], [[[0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7]], [[0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7]], [[0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7], [0, 1, 2, 3, 4, 5, 6, 7]]]], <class 'list'>)
                                                                                                                                                                                                                                                                             pyreturnmultidemint4                                                                                                                                                                                                                                                                              
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 {{{{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7}},{{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7}},{{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7}}},{{{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7}},{{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7}},{{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7},{0,1,2,3,4,5,6,7}}}}
(1 row)

CREATE OR REPLACE FUNCTION pyreturnmultidemint8(h int4, i int4, j int4, k int4 ) RETURNS int8[] AS $BODY$
m = [[[[x for x in range(h)] for y in range(i)] for z in range(j)] for w in range(k)]
plpy.info(m, type(m))
return m
$BODY$ LANGUAGE plpython3u;
select pyreturnmultidemint8(5,5,3,2);
INFO:  ([[[[0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4]], [[0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4]], [[0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4]]], [[[0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4]], [[0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4]], [[0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4]]]], <class 'list'>)
                                                                                                                                                                                   pyreturnmultidemint8                                                                                                                                                                                    
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 {{{{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4}},{{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4}},{{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4}}},{{{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4}},{{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4}},{{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4},{0,1,2,3,4}}}}
(1 row)

CREATE OR REPLACE FUNCTION pyreturnmultidemfloat4(h int4, i int4, j int4, k int4 ) RETURNS float4[] AS $BODY$
m = [[[[x for x in range(h)] for y in range(i)] for z in range(j)] for w in range(k)]
plpy.info(m, type(m))
return m
$BODY$ LANGUAGE plpython3u;
select pyreturnmultidemfloat4(6,5,3,2);
INFO:  ([[[[0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5]], [[0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5]], [[0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5]]], [[[0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5]], [[0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5]], [[0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5]]]], <class 'list'>)
                                                                                                                                                                                                                pyreturnmultidemfloat4                                                                                                                                                                                                                 
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 {{{{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5}},{{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5}},{{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5}}},{{{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5}},{{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5}},{{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5},{0,1,2,3,4,5}}}}
(1 row)

CREATE OR REPLACE FUNCTION pyreturnmultidemfloat8(h int4, i int4, j int4, k int4 ) RETURNS float8[] AS $BODY$
m = [[[[x for x in range(h)] for y in range(i)] for z in range(j)] for w in range(k)]
plpy.info(m, type(m))
return m
$BODY$ LANGUAGE plpython3u;
select pyreturnmultidemfloat8(7,5,3,2);
INFO:  ([[[[0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6]], [[0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6]], [[0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6]]], [[[0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6]], [[0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6]], [[0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6], [0, 1, 2, 3, 4, 5, 6]]]], <class 'list'>)
                                                                                                                                                                                                                                              pyreturnmultidemfloat8                                                                                                                                                                                                                                               
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 {{{{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6}},{{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6}},{{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6}}},{{{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6}},{{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6}},{{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6},{0,1,2,3,4,5,6}}}}
(1 row)

CREATE FUNCTION test_type_conversion_array_text(x text[]) RETURNS text[] AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_array_text(ARRAY['foo', 'bar']);
INFO:  (['foo', 'bar'], <class 'list'>)
 test_type_conversion_array_text 
---------------------------------
 {foo,bar}
(1 row)

SELECT * FROM test_type_conversion_array_text(ARRAY[['foo', 'bar'],['foo2', 'bar2']]);
INFO:  ([['foo', 'bar'], ['foo2', 'bar2']], <class 'list'>)
 test_type_conversion_array_text 
---------------------------------
 {{foo,bar},{foo2,bar2}}
(1 row)

CREATE FUNCTION test_type_conversion_array_bytea(x bytea[]) RETURNS bytea[] AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_array_bytea(ARRAY[E'\\xdeadbeef'::bytea, NULL]);
INFO:  ([b'\xde\xad\xbe\xef', None], <class 'list'>)
 test_type_conversion_array_bytea 
----------------------------------
 {"\\xdeadbeef",NULL}
(1 row)

CREATE FUNCTION test_type_conversion_array_mixed1() RETURNS text[] AS $$
return [123, 'abc']
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_array_mixed1();
 test_type_conversion_array_mixed1 
-----------------------------------
 {123,abc}
(1 row)

CREATE FUNCTION test_type_conversion_array_mixed2() RETURNS int[] AS $$
return [123, 'abc']
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_array_mixed2();
ERROR:  invalid input syntax for type integer: "abc"
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_array_mixed2"
-- check output of multi-dimensional arrays
CREATE FUNCTION test_type_conversion_md_array_out() RETURNS text[] AS $$
return [['a'], ['b'], ['c']]
$$ LANGUAGE plpython3u;
select test_type_conversion_md_array_out();
 test_type_conversion_md_array_out 
-----------------------------------
 {{a},{b},{c}}
(1 row)

CREATE OR REPLACE FUNCTION test_type_conversion_md_array_out() RETURNS text[] AS $$
return [[], []]
$$ LANGUAGE plpython3u;
select test_type_conversion_md_array_out();
 test_type_conversion_md_array_out 
-----------------------------------
 {}
(1 row)

CREATE OR REPLACE FUNCTION test_type_conversion_md_array_out() RETURNS text[] AS $$
return [[], [1]]
$$ LANGUAGE plpython3u;
select test_type_conversion_md_array_out();  -- fail
ERROR:  multidimensional arrays must have array expressions with matching dimensions
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_md_array_out"
CREATE OR REPLACE FUNCTION test_type_conversion_md_array_out() RETURNS text[] AS $$
return [[], 1]
$$ LANGUAGE plpython3u;
select test_type_conversion_md_array_out();  -- fail
ERROR:  multidimensional arrays must have array expressions with matching dimensions
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_md_array_out"
CREATE OR REPLACE FUNCTION test_type_conversion_md_array_out() RETURNS text[] AS $$
return [1, []]
$$ LANGUAGE plpython3u;
select test_type_conversion_md_array_out();  -- fail
ERROR:  multidimensional arrays must have array expressions with matching dimensions
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_md_array_out"
CREATE OR REPLACE FUNCTION test_type_conversion_md_array_out() RETURNS text[] AS $$
return [[1], [[]]]
$$ LANGUAGE plpython3u;
select test_type_conversion_md_array_out();  -- fail
ERROR:  multidimensional arrays must have array expressions with matching dimensions
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_md_array_out"
CREATE FUNCTION test_type_conversion_mdarray_malformed() RETURNS int[] AS $$
return [[1,2,3],[4,5]]
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_mdarray_malformed();
ERROR:  multidimensional arrays must have array expressions with matching dimensions
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_mdarray_malformed"
CREATE FUNCTION test_type_conversion_mdarray_malformed2() RETURNS text[] AS $$
return [[1,2,3], "abc"]
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_mdarray_malformed2();
ERROR:  multidimensional arrays must have array expressions with matching dimensions
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_mdarray_malformed2"
CREATE FUNCTION test_type_conversion_mdarray_malformed3() RETURNS text[] AS $$
return ["abc", [1,2,3]]
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_mdarray_malformed3();
ERROR:  multidimensional arrays must have array expressions with matching dimensions
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_mdarray_malformed3"
CREATE FUNCTION test_type_conversion_mdarray_toodeep() RETURNS int[] AS $$
return [[[[[[[1]]]]]]]
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_mdarray_toodeep();
ERROR:  number of array dimensions exceeds the maximum allowed (6)
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_mdarray_toodeep"
CREATE FUNCTION test_type_conversion_array_record() RETURNS type_record[] AS $$
return [{'first': 'one', 'second': 42}, {'first': 'two', 'second': 11}]
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_array_record();
 test_type_conversion_array_record 
-----------------------------------
 {"(one,42)","(two,11)"}
(1 row)

CREATE FUNCTION test_type_conversion_array_string() RETURNS text[] AS $$
return 'abc'
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_array_string();
 test_type_conversion_array_string 
-----------------------------------
 {a,b,c}
(1 row)

CREATE FUNCTION test_type_conversion_array_tuple() RETURNS text[] AS $$
return ('abc', 'def')
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_array_tuple();
 test_type_conversion_array_tuple 
----------------------------------
 {abc,def}
(1 row)

CREATE FUNCTION test_type_conversion_array_error() RETURNS int[] AS $$
return 5
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_array_error();
ERROR:  return value of function with array return type is not a Python sequence
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_array_error"
--
-- Domains over arrays
--
CREATE DOMAIN ordered_pair_domain AS integer[] CHECK (array_length(VALUE,1)=2 AND VALUE[1] < VALUE[2]);
CREATE FUNCTION test_type_conversion_array_domain(x ordered_pair_domain) RETURNS ordered_pair_domain AS $$
plpy.info(x, type(x))
return x
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_array_domain(ARRAY[0, 100]::ordered_pair_domain);
INFO:  ([0, 100], <class 'list'>)
 test_type_conversion_array_domain 
-----------------------------------
 {0,100}
(1 row)

SELECT * FROM test_type_conversion_array_domain(NULL::ordered_pair_domain);
INFO:  (None, <class 'NoneType'>)
 test_type_conversion_array_domain 
-----------------------------------
 
(1 row)

CREATE FUNCTION test_type_conversion_array_domain_check_violation() RETURNS ordered_pair_domain AS $$
return [2,1]
$$ LANGUAGE plpython3u;
SELECT * FROM test_type_conversion_array_domain_check_violation();
ERROR:  value for domain ordered_pair_domain violates check constraint "ordered_pair_domain_check"
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_array_domain_check_violation"
--
-- Arrays of domains
--
CREATE FUNCTION test_read_uint2_array(x uint2[]) RETURNS uint2 AS $$
plpy.info(x, type(x))
return x[0]
$$ LANGUAGE plpython3u;
select test_read_uint2_array(array[1::uint2]);
INFO:  ([1], <class 'list'>)
 test_read_uint2_array 
-----------------------
                     1
(1 row)

CREATE FUNCTION test_build_uint2_array(x int2) RETURNS uint2[] AS $$
return [x, x]
$$ LANGUAGE plpython3u;
select test_build_uint2_array(1::int2);
 test_build_uint2_array 
------------------------
 {1,1}
(1 row)

select test_build_uint2_array(-1::int2);  -- fail
ERROR:  value for domain uint2 violates check constraint "uint2_check"
CONTEXT:  while creating return value
PL/Python function "test_build_uint2_array"
--
-- ideally this would work, but for now it doesn't, because the return value
-- is [[2,4], [2,4]] which our conversion code thinks should become a 2-D
-- integer array, not an array of arrays.
--
CREATE FUNCTION test_type_conversion_domain_array(x integer[])
  RETURNS ordered_pair_domain[] AS $$
return [x, x]
$$ LANGUAGE plpython3u;
select test_type_conversion_domain_array(array[2,4]);
ERROR:  return value of function with array return type is not a Python sequence
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_domain_array"
select test_type_conversion_domain_array(array[4,2]);  -- fail
ERROR:  return value of function with array return type is not a Python sequence
CONTEXT:  while creating return value
PL/Python function "test_type_conversion_domain_array"
CREATE FUNCTION test_type_conversion_domain_array2(x ordered_pair_domain)
  RETURNS integer AS $$
plpy.info(x, type(x))
return x[1]
$$ LANGUAGE plpython3u;
select test_type_conversion_domain_array2(array[2,4]);
INFO:  ([2, 4], <class 'list'>)
 test_type_conversion_domain_array2 
------------------------------------
                                  4
(1 row)

select test_type_conversion_domain_array2(array[4,2]);  -- fail
ERROR:  value for domain ordered_pair_domain violates check constraint "ordered_pair_domain_check"
CREATE FUNCTION test_type_conversion_array_domain_array(x ordered_pair_domain[])
  RETURNS ordered_pair_domain AS $$
plpy.info(x, type(x))
return x[0]
$$ LANGUAGE plpython3u;
select test_type_conversion_array_domain_array(array[array[2,4]::ordered_pair_domain]);
INFO:  ([[2, 4]], <class 'list'>)
 test_type_conversion_array_domain_array 
-----------------------------------------
 {2,4}
(1 row)

---
--- Composite types
---
CREATE TABLE employee (
    name text,
    basesalary integer,
    bonus integer
);
INSERT INTO employee VALUES ('John', 100, 10), ('Mary', 200, 10);
CREATE OR REPLACE FUNCTION test_composite_table_input(e employee) RETURNS integer AS $$
return e['basesalary'] + e['bonus']
$$ LANGUAGE plpython3u;
SELECT name, test_composite_table_input(employee.*) FROM employee;
 name | test_composite_table_input 
------+----------------------------
 John |                        110
 Mary |                        210
(2 rows)

ALTER TABLE employee DROP bonus;
SELECT name, test_composite_table_input(employee.*) FROM employee;
ERROR:  KeyError: 'bonus'
CONTEXT:  Traceback (most recent call last):
  PL/Python function "test_composite_table_input", line 2, in <module>
    return e['basesalary'] + e['bonus']
PL/Python function "test_composite_table_input"
ALTER TABLE employee ADD bonus integer;
UPDATE employee SET bonus = 10;
SELECT name, test_composite_table_input(employee.*) FROM employee;
 name | test_composite_table_input 
------+----------------------------
 John |                        110
 Mary |                        210
(2 rows)

CREATE TYPE named_pair AS (
    i integer,
    j integer
);
CREATE OR REPLACE FUNCTION test_composite_type_input(p named_pair) RETURNS integer AS $$
return sum(p.values())
$$ LANGUAGE plpython3u;
SELECT test_composite_type_input(row(1, 2));
 test_composite_type_input 
---------------------------
                         3
(1 row)

ALTER TYPE named_pair RENAME TO named_pair_2;
SELECT test_composite_type_input(row(1, 2));
 test_composite_type_input 
---------------------------
                         3
(1 row)

--
-- Domains within composite
--
CREATE TYPE nnint_container AS (f1 int, f2 nnint);
CREATE FUNCTION nnint_test(x int, y int) RETURNS nnint_container AS $$
return {'f1': x, 'f2': y}
$$ LANGUAGE plpython3u;
SELECT nnint_test(null, 3);
 nnint_test 
------------
 (,3)
(1 row)

SELECT nnint_test(3, null);  -- fail
ERROR:  value for domain nnint violates check constraint "nnint_check"
CONTEXT:  while creating return value
PL/Python function "nnint_test"
--
-- Domains of composite
--
CREATE DOMAIN ordered_named_pair AS named_pair_2 CHECK((VALUE).i <= (VALUE).j);
CREATE FUNCTION read_ordered_named_pair(p ordered_named_pair) RETURNS integer AS $$
return p['i'] + p['j']
$$ LANGUAGE plpython3u;
SELECT read_ordered_named_pair(row(1, 2));
 read_ordered_named_pair 
-------------------------
                       3
(1 row)

SELECT read_ordered_named_pair(row(2, 1));  -- fail
ERROR:  value for domain ordered_named_pair violates check constraint "ordered_named_pair_check"
CREATE FUNCTION build_ordered_named_pair(i int, j int) RETURNS ordered_named_pair AS $$
return {'i': i, 'j': j}
$$ LANGUAGE plpython3u;
SELECT build_ordered_named_pair(1,2);
 build_ordered_named_pair 
--------------------------
 (1,2)
(1 row)

SELECT build_ordered_named_pair(2,1);  -- fail
ERROR:  value for domain ordered_named_pair violates check constraint "ordered_named_pair_check"
CONTEXT:  while creating return value
PL/Python function "build_ordered_named_pair"
CREATE FUNCTION build_ordered_named_pairs(i int, j int) RETURNS ordered_named_pair[] AS $$
return [{'i': i, 'j': j}, {'i': i, 'j': j+1}]
$$ LANGUAGE plpython3u;
SELECT build_ordered_named_pairs(1,2);
 build_ordered_named_pairs 
---------------------------
 {"(1,2)","(1,3)"}
(1 row)

SELECT build_ordered_named_pairs(2,1);  -- fail
ERROR:  value for domain ordered_named_pair violates check constraint "ordered_named_pair_check"
CONTEXT:  while creating return value
PL/Python function "build_ordered_named_pairs"
--
-- Prepared statements
--
CREATE OR REPLACE FUNCTION test_prep_bool_input() RETURNS int
LANGUAGE plpython3u
AS $$
plan = plpy.prepare("SELECT CASE WHEN $1 THEN 1 ELSE 0 END AS val", ['boolean'])
rv = plpy.execute(plan, ['fa'], 5) # 'fa' is true in Python
return rv[0]['val']
$$;
SELECT test_prep_bool_input(); -- 1
 test_prep_bool_input 
----------------------
                    1
(1 row)

CREATE OR REPLACE FUNCTION test_prep_bool_output() RETURNS bool
LANGUAGE plpython3u
AS $$
plan = plpy.prepare("SELECT $1 = 1 AS val", ['int'])
rv = plpy.execute(plan, [0], 5)
plpy.info(rv[0])
return rv[0]['val']
$$;
SELECT test_prep_bool_output(); -- false
INFO:  {'val': False}
 test_prep_bool_output 
-----------------------
 f
(1 row)

CREATE OR REPLACE FUNCTION test_prep_bytea_input(bb bytea) RETURNS int
LANGUAGE plpython3u
AS $$
plan = plpy.prepare("SELECT octet_length($1) AS val", ['bytea'])
rv = plpy.execute(plan, [bb], 5)
return rv[0]['val']
$$;
SELECT test_prep_bytea_input(E'a\\000b'); -- 3 (embedded null formerly truncated value)
 test_prep_bytea_input 
-----------------------
                     3
(1 row)

CREATE OR REPLACE FUNCTION test_prep_bytea_output() RETURNS bytea
LANGUAGE plpython3u
AS $$
plan = plpy.prepare("SELECT decode('aa00bb', 'hex') AS val")
rv = plpy.execute(plan, [], 5)
plpy.info(rv[0])
return rv[0]['val']
$$;
SELECT test_prep_bytea_output();
INFO:  {'val': b'\xaa\x00\xbb'}
 test_prep_bytea_output 
------------------------
 \xaa00bb
(1 row)