Python run one function multiple times at the same time

Question

I am writing one bot and it needs to run multiple instances: first you input how many you want:

instances = int(input('How many instances?: '))

Then the code will run one function (the main and only thing it does) and thats it. The bot is just Selenium, if that is relevant in any way

Tldr: Need to execute one function multiple times but at the same time

I tried

    if __name__ == '__main__':
        executor.submit(functionname)

but the problem is that I need to input how many instances of the bot at the same time should be ran, and this way of adding lines is extremely janky

Answer 1

Pythons multiprocessing module should do what you want. From the docs :

from multiprocessing import Process

def f(name):
    print('hello', name)

if __name__ == '__main__':
    p = Process(target=f, args=('bob',))
    p.start()
    p.join()

Multiple processes can be called like this:

for num in range(10):
        Process(target=f, args=(lock, num)).start()

Answer 2

you should use loop for this and initialize with a constant value 1 if you want to run your function one time and also Use methods of start and join.

Answer 3

Thank you user-na! What I did was

if __name__ == '__main__':
    for num in range(instances):
        Process(target=functionname).start()