5.5 Janus class Term

Class janus.Term() encapsulates a Prolog term. Similarly to the Python object reference (see py_is_object/1), the class allows Python to represent arbitrary Prolog data, typically with the intend to pass it back to Prolog.

Term janus.Term(*args)

Instances are never created explicitly by the user. An instance is created by handling a term prolog(Term) to the data conversion process. As a result, we can do

?- py_call(janus:echo(prolog(hello(world))), Obj,
           [py_object(true)]).
Obj = <py_Term>(0x7f7a14512050).
?- py_call(print($Obj)).
hello(world)
Obj = <py_Term>(0x7f7a14512050).

Term janus.Term.__str__()

Return the output of print/1 on the term. This is what is used by the Python function print().

Term janus.Term.__repr__()

Return the output of write_canonical/1 on the term.