I'm trying to keep a subprocess alive, so that I can interact with it later. So far, I've tried to make the subprocess an attribute of a class, and have methods to interact with it. However, this doesn't seem to work. I've seen a related case in here, but I was expecting some upgrades in the subprocess library in the last years. Also, I'm actively avoiding pexpect for reasons related to the place I work at. I would expect to have a persistent background shell session (with several environmental variables set only in that shell) that allows me to run commands and programs, and gets closed only when I call a specific method. The output should go into a log file. Can someone please tell me what I'm doing wrong? from subprocess import Popen, PIPE import time class Session: def __init__( self, first_commands : list ): self._log = open("session.log", "w") self._proc = Popen( first_commands, stdin=PIPE, stdout=self._log, stderr=PIPE, universal_newlines=True, shell=True ) def send(self, new_command : str): self._proc.stdin.write(new_command) self._proc.stdin.flush() def close(self): self._proc.stdin.write("echo Bye bye!") self._proc.stdin.flush() self._proc.kill() self._log.close() if __name__ == "__main__": sass = Session(["echo 'So it begins!'"]) sass.send("pwd") time.sleep(2) sass.send("ls") sass.send("touch eternity.end") sass.send("mkdir LookWhatICreated") sass.close() Continue reading...
