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Python 3 Multithreading Example to Execute Function Code in Parallel & Concurrent Threads
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Jun 3, 2025
Get the full source code of application here: https://codingshiksha.com/python/python-3-multithreading-example-to-execute-function-code-in-parallel-concurrent-threads/
View Video Transcript
0:00
uh hello guys welcome to this video so
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in this video I will show you a Python
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package by which you can implement
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multi-threading or parallel execution of
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multiple functions at a single time so
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we have basically prepared this Python
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script which actually contains multiple
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threads
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and at concurrently it executes multiple
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functions so let me just show you as I
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run this Python script you will
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see it is basically executing multiple
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functions at the same time using uh the
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concept of threading so threading as you
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know that you can see both threads have
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been finished executing
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uh some programming language supports
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multi-threading somes don't but in
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Python as you all know it contains it's
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a multi-threaded language it supports
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multi-threading and JavaScript is a
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single-threaded language c++ also
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supports multi-threading java also
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supports multi-threading so similarly in
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Python we actually use this module which
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is
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threading so this is actually I think
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it's a third party module
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so it makes it easy to implement so just
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search for this module which is
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threading yeah so I think yeah this is
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actually the
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module by
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default you install this pip install
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threading 2 but you import this so I
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will show you the complete example the
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link is given in the description
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so it's a very simple example so first
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of all you simply import the
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module the time module which is a
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built-in module and then from this
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threading
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module I think you don't need to install
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this it's built in inside the latest
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version of Python which is 3
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uh the Python 3 it's built in the
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multi-threading support so you simply
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import this module from threading import
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the thread class after that you simply
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define we define two functions first
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function which
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actually expects a argument to be passed
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here which is a countdown function and
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now inside this while loop we
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simply countdown to those number we
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simply print
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out so this function actually accepts an
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integer to be passed to this function to
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actually render out the countdown string
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so very simple we have defined this
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while loop we wait for 1 second and the
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second function which will be
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responsible again here we'll be
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providing a simple print message actual
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message plus the count variable and then
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we loop through and display these are
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two different functions and now I will
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show you the concept of threading so how
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we do this we
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actually open a new thread by using this
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thread class and we specify the target
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what target code that you want to
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execute so here I will display this
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countdown function that we declared and
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then we can provide the arguments right
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here which is the
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five like this similarly we'll be
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defining the second thread again by
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using the thread class and this time
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we'll be executing the second function
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that we defined which is print
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messages and the arguments that we need
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to pass here the first will be the
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string value hello from thread two and
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then
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five so these are two different threads
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calling two different functions so these
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are the first thread this is a second
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thread calling the second
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function so after that now to start the
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thread we call the start function so t1
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start t2 start so both the threads are
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starting one after the other and
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uh optionally we can also call the join
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function as well so that we get the
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message whenever both the threads have
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been finished so after that we can
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simply print a line both threads have
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finished so now what happen if I execute
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this Python
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script both the threads will start
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concurrently and as you can
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see multi-threading is implemented in
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this format so we have taken a very
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simple example you can see we executed
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both the threads at the same time
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concurrently and then we simply print
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out that both threads have finished so
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in this easy way guys you can get
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started using multi-threading inside
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Python using this threading
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module you define whatever code that you
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need to just assign them into different
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functions and then define different
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threads uh thank you very much for
5:14
watching this video and also check out
5:16
my website freemediattools.com
5:19
uh which contains thousands of tools
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