threading.Thread

Describing Thread(group, target, name, args)

  • The Thread object creates a new Thread instance
  • The target is a callable object (e.g. function)
  • It is invoked by the run() method
  • Typically, we use the start() method to invoke the run() method
  • By default, target is None
  • Meaning, nothing is called
  • The name is the thread name
  • By default, a unique name of the form Thread-N is created
  • The args is a tuple of arguments passed to the target function

Example of Thread

# sleepy.py
>>> import logging
>>> import threading as t
>>> import time

>>> def sleep_thread(msg):
...     print('thread started')
...     print(msg)
...     time.sleep(2)
...     print('thread done')

>>> if __name__ == "__main__":
...     print('main started')
...     msg = 'i am sleepy'
...     thd = t.Thread(target=sleep_thread, args=(msg,))
...     print('main created thread')
...     thd.start()
...     print('main started thread')
...     print('main done')
# !/bin/sh
$ python3 sleepy.py
main started
main created thread
thread started
i am sleepy
main started thread
main done
thread done

References

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