Is it possible to combine Py.Import.add_module and Py.Run.eval ?

[UnixJunkie]

i.e. I want to interpret some python lines (at run-time; e.g. using Py.Run.eval) and declare that this defines a new module
with a given name (like Py.Import.add_module does).

In other word, I would like pyml to be able to interpret some python code that is hard-coded into
my ocaml program, to define a new python module at run-time.
However, this Python module source file would not be installed on the system (because I don't want to have to,
so that the ocaml executable/library is easier to deploy).

I suspect pyml already provides this functionality, but I could not find it.

Thanks,
F.

[thierry-martinez]

You may combine Py.compile and Py.Import.exec_code_module to import a module from a string. For instance, you may declare the following function:

let import_python_source ~module_name ~filename ~source =
  let bytecode = Py.compile ~filename ~source `Exec in
  Py.Import.exec_code_module module_name bytecode

and use it as follows:

let () =
  Py.initialize ~version:3 ();
  let m = import_python_source ~module_name:"toto" ~filename:"toto.py"
    ~source:{|
def f():
  print("Hello, world!")
|} in
  assert (Py.Module.get_function m "f" [| |] = Py.none)

[UnixJunkie]

Ok, thanks a lot!
If I manage to make it work, I might send a PR to update the documentation.

[UnixJunkie]

was related to #25