; docformat = 'rst' ;+ ; Example of communicating with an external program via pipes using SPAWN. ; ; :Params: ; input : in, optional, type=numeric or string ; the input to be doubled by the Python program ;- pro mg_run_python, input compile_opt strictarr _input = n_elements(input) eq 0L ? 1.0 : input spawn, 'python python_doubler.py', unit=lun print, 'Sending ' + strtrim(_input, 2) + ' to python_doubler.py...' printf, lun, _input line = '' readf, lun, line print, 'Response: ' + line free_lun, lun end