Open A Python Port From Erlang: No Reply Messages

Based on Chapter 12 of the OTP in Action book and Cesarini's book I wrote this Erlang code: Erlang: p(Param) -> ?DBG('Starting~n', []), Cmd = 'python test.py', Po

Solution 1:

There are two points:

• make sure that Python does not buffer your output, try running python -u in open_port
• using term_to_binary/1 and binary_to_term/1 won't work, since they assume that Python is able to encode/decode Erlang External Term Format, which does not seem to be the case. If you want to go this route, check out ErlPort

Solution 2:

Does your Param contain the command limiter for Python? (in this case I assume newline, "\n"). Also, list_to_binary/1 and then a term_to_binary/1 feels kinda wrong. term_to_binary/1 directly (including the newline) should be sufficient.