I have two scripts a.py and b.py, they send data to each other via a local host (mqtt), and they both depend from a configuration file conf.json. I usually execute them in two different terminals,

• a.py in one terminal
• b.py in another

and everything it's OK. I am trying right now to create another script c.py which should do the following:

• for parameter in parameters
• update config.json
• execute a.py and b.py "in two different terminals"
• close a.py, b.py and start again with the new parameters

Now, I am very noob about this, so I tried to use Thread from threading

from threading import Thread

for parameter in parameter 
    #update config.json
    class exp(Thread):
        def __init__(self, name):
            Thread.__init__(self)
            self.name = name
        def run(self):
            if self.name == 0:
               a.runs()
            else:
               b.runs()
    thread1 = exp(0)
    thread1.start()
    thread2 = exp(1)
    thread2.start()

a.py and b.py scripts both end by:

def runs():
    #whatever runs do
if __name__ = 'main':
   runs()

It runs without errors, but it does not work. I am quite sure there should be a nice and standard solution to this problem. Any ideas? Thanks!

CodePudding user response：

You probably want multiprocessing, not the threading library (look up multiprocessing.Process. Another fairly equivalent option is to use subprocess.call to launch the two scripts via shell.

Regarding threads - Keep in mind they are limited due to the Global Interpreter Lock in CPython - which is the prevalent python implementation and the one you probably are using.

CodePudding user response：

you can us qt Threading. Qt has a very powerful library exactly for this purpose.