lesson05_instance_variables.py

# SuperFastPython.com
# example of thread return values via instance variables
from time import sleep
from threading import Thread

# custom thread
class CustomThread(Thread):
 # constructor
 def __init__(self):
 # execute the base constructor
 Thread.__init__(self)
 # set a default value
 self.value = None

 # function executed in a new thread
 def run(self):
 # block for a moment
 sleep(1)
 # store data in an instance variable
 self.value = 'Hello from a new thread'

# protect the entry point
if __name__ == '__main__':
 # create a new thread
 thread = CustomThread()
 # start the thread
 thread.start()
 # wait for the thread to finish
 thread.join()
 # get the value returned from the thread
 data = thread.value
 print(data)