python subprocess call background process in thread

How do I not make it block the rest of the Python script and then kill it once the python methods have finished running and returned a value? Much thanks.

I can't get the get_user_recommendations to run because the JVM server is blocking the process. Where: from py4j.java_gateway import JavaGateway J_id_list = ListConverter().convert(class_list, self.gateway._gateway_client) Wait for command to complete, then return the returncode attribute. Print 'recommendations' + str(r.get_users_recommendation(sys.argv))ĭef get_users_recommendation(self, user_list): call (args,, stdin None, stdout None, stderr None, shell False, cwd None, timeout None, otherpopenkwargs) Run the command described by args. To limit number of concurrent commands you could use that uses threads and provides the same interface as multiprocessing.Pool that uses processes: from functools import partial from multiprocessing. the process is started in the background and the process ID of the child. Python code: process = subprocess.Popen('runJVM.sh', shell=True, stderr=subprocess.STDOUT)Īssert len(sys.argv) > 1, '%d arguments supplied, one needed' %(len(sys.argv)-1) Octave includes some high-level commands like system and popen for starting. I need the JVM to run while I'm calling another function, and I need to stop the JVM after the process has finished running.

But I dont see the run method invoked when I create instances of thread. However, my problem is that the correct way I have it written, the JVM starts and blocks the rest of the processes that happen after it. I am using python 2.7 and new to Threading. I'm writing an application in python that initiates a JVM in java by calling a shell script using a python subprocess. import time import threading class TestThreading(object): def init(self, interval1): self.interval interval thread threading.

Python subprocess call background process in thread