Pythonx BEAM Level

Mix.install([
  {:pythonx, "~> 0.2"},
  {:kino, "~> 0.14"}
])

Initialize

alias Pythonx.Beam

Pythonx.initialize_once()

globals = Beam.encode(%{x: 1})

Pythonx.C.PyObject.print(globals.ref, :stdout, 0)

Beam.decode(globals)

locals = Beam.encode(%{a: 1, b: 2})

Pythonx.C.PyObject.print(locals.ref, :stdout, 0)

Beam.decode(locals)

Run Python code

Beam.PyRun.string("c = a + b", Beam.py_file_input(), globals, locals)
Beam.PyRun.string("l = [i ** 2 for i in range(10)]", Beam.py_file_input(), globals, locals)
Beam.PyRun.string("""
m = {"x": 99, "y": 100}
m["x"] = m["x"] + 2
""", Beam.py_file_input(), globals, locals)

Pythonx.C.PyObject.print(locals.ref, :stdout, 0)

Beam.decode(locals)

py_beam_pipe = fn locals, code ->
  beam_locals = Beam.encode(locals)
  Beam.PyRun.string(code, Beam.py_file_input(), Beam.encode(%{}), beam_locals)
  Beam.decode(beam_locals)
end

%{x: ["a", "b", "c"]}
|> py_beam_pipe.("""
y = {}
for i, v in enumerate(x):
  y[v] = i
""")
|> then(fn locals ->
  Map.put(locals, "elixir", "hello")
end)
|> py_beam_pipe.("""
if len(x) == 3:
  x.sort(reverse=True)
""")
|> then(fn locals ->
  locals
  |> Map.put("y", Map.put(locals["y"], "x", 99))
  |> Map.put("x", ["z" | locals["x"]])
end)
|> py_beam_pipe.("""
python = "hello"
""")