Is there a way to call python using ports, and get the result by receive block? Example code is preferred, thanks in advance.

Well, there is ErlPort . Perhaps it does already do what you need? There is also an elixir wrapper available: export

Here’s a great article on ports: The Erlangelist - Outside Elixir It uses Ruby, not Python, but the general approach should be exactly the same.

I coded a elixir port to julia , but it doesn’t work for python, I don’t know why, will dig into the ruby version. Thanks!

Thanks! I will find out if and how ErlPort works with respect to Python, I just don’t understand why I need use a library instead of plain elixir.

There is no need in using the library, you are free to do all the work again and on your own, that has already been done by the ErlPorts team. [image] cjen07: I coded a elixir port to julia, but it doesn’t work for python, I don’t know why, Perhaps you can show us what you have, and what yo…

I am not understanding something about ports, and it could be that I do not understand Python and NodeJS. First my setup: Mac OSX Elixir 1.8.1 Erlang 21 Python 3.7.2, also tried 2.7.2. In addition I have read Outside Elixir too. I wanted to communicate with a python script via an Elixir port…

{:packet, 4} means, that you need 4 bytes denoting the lenght of the message and no newline after that (unless its part of the message). In elixir syntax the message has to look like this: <<4::integer-size(4)-unit(8), "asdf">> # or <<0, 0, 0, 4, 97, 115, 100, 102>>

I will update more later, but I seem to have found the issue. Above I had been creating the command as python <path_to_script> where the path was the absolute path. When I changed the cmd to python ./src/py_port_test.py I get the response as i would expect. I still do not understand why the absolu…

I’m really wondering why this works, as the message format you use in in python and node is plain wrong. To debug this, you should consider also using stderr_to_stdout and exit_status options when opening the port.

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Elixir call python by ports

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cjen07 July 27, 2017, 1:23pm 7

Sure, I will write a script.