Starting a thread

A thread is a sequence of instructions in a program which can be executed independently of other code. We can also say that thread is subset of a process and a process is made up of many threads.

Threads sometimes called light-weight processes, and they do not require much memory overhead; they are cheaper than processes.

A thread has a starting point, an execution sequence, and a result.

We have a module thread in python. We can easily import it in our program.

syntax:-

import thread

By this module we can easily start a thread.

syntax:-

thread.start_new_thread (function, args,)

Let us see an example to start a thread.

e..g.,

import time
import _thread
def threadtest(name1, wait):
   i = 0
   while i <= 6:
      time.sleep(wait)
      print("Running %s\n" %name1)
      i = i + 1

   print("%s has finished execution" %name1)

if __name__ == "__main__":
    
    _thread.start_new_thread(threadtest, ("First Thread", 2))
    _thread.start_new_thread(threadtest, ("Second Thread", 4))
    _thread.start_new_thread(threadtest, ("Third Thread", 6))