# SuperFastPython.com

# example of shared ctype accessed in multiple processes

from random import random

from multiprocessing import Value

from multiprocessing import Process

# custom function to be executed in a child process

def task(shared_var):

# generate a single floating point value

generated = random()

# store value

shared_var.value = generated

# report progress

print(f'Wrote: {shared_var.value}', flush=True)

# protect the entry point

if __name__ == '__main__':

# create shared variable

variable = Value('f', 0.0)

# create a child process process

process = Process(target=task, args=(variable,))

# start the process

process.start()

# wait for the process to finish

process.join()

# read the value

data = variable.value

# report the value

print(f'Read: {data}')