py_module/2

Availability::- use_module(library(janus)).(can be autoloaded)

[det]py_module(+Module:atom, +Source:string)

Load Source into the Python module Module. This is intended to be used together with the string quasi quotation that supports long strings in SWI-Prolog. For example:

:- use_module(library(strings)).
:- py_module(hello,
             {|string||
              | def say_hello_to(s):
              |     print(f"hello {s}")
              |}).

Calling this predicate multiple times with the same Module and Source is a no-op. Called with a different source creates a new Python module that replaces the old in the global namespace.

Errors: python_error(Type, Data) is raised if Python raises an error.