SELECT * FROM composite_type_as_list_broken();

ERROR: malformed record literal: "first"

DETAIL: Missing left parenthesis.

HINT: To return a composite type in an array, return the composite type as a Python tuple, e.g. "[('foo')]"

HINT: To return a composite type in an array, return the composite type as a Python tuple, e.g., "[('foo',)]".

CONTEXT: while creating return value

PL/Python function "composite_type_as_list_broken"

(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),

errmsg("malformed record literal: \"%s\"",str),

errdetail("Missing left parenthesis."),

errhint("To return a composite type in an array, return the composite type as a Python tuple, e.g. \"[('foo')]\"")));

errhint("To return a composite type in an array, return the composite type as a Python tuple, e.g., \"[('foo',)]\".")));

}

returnInputFunctionCall(&arg->typfunc,

(errcode(ERRCODE_UNDEFINED_COLUMN),

errmsg("attribute \"%s\" does not exist in Python object",key),

inarray ?

errhint("To return a composite type in an array, return the composite type as a Python tuple, e.g. \"[('foo')]\"") :

errhint("To return a composite type in an array, return the composite type as a Python tuple, e.g., \"[('foo',)]\".") :

errhint("To return null in a column, let the returned object have an attribute named after column with value None.")));

}