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Hey everyone, welcome back to Simplified
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by Singum. Welcome to our Python for
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beginners series. So today's exercise is
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one of the most classic ones you'll ever
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see. Because we are going to print hello
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world not once, not twice, but 10 times.
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Now you might be wondering why do we
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always start with hello world. It's
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simple. Hello world is like tradition in
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programming. It's the first thing almost
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every programmer learns when starting a
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new language. And today we'll repeat it
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10 times using a while loop with the
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Okay, let's break the flowchart down.
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First we set the counter to zero and
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then we enter a loop and this loop keeps
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running until the counter reaches 10.
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And inside the loop, we will increase
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the counter by one. Each time we go
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through the loop, we print hello world.
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And once the counter is no longer less
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than 10, then the loop stops and the
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That's it. It's like telling Python,
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keep saying hello world until you have
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Okay, let's now turn that flowchart into
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a real code. Let's create a variable
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called counter and let's give it zero
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and you just increment counter
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by one every in every loop.
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counter equal to counter + one.
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I'm just writing this in every program
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whenever I use this plus equal to is
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because you guys might get confused as
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you know we are still in the beginning
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stage. I just want you to be clear about
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it how to use it until you get used to
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it. I'm going to do it as much as I can.
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So whenever I'm using it, I'll try to
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use this comment so that you guys can
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remember next time even without this
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comment. If you're practicing with me in
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every video, in every exercise, then you
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will see this like whenever I write
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this, I will write this also because it
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is easy for you to understand and keep
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that in mind that we can write short
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notation something like this. So counter
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plus equal to 1 is nothing but you are
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increasing counter by one which is same
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as counter equal to counter + 1. Now
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let's go line by line.
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So here counter equal to zero. This is
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like starting our stopwatch at zero. And
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while the counter is less than 10 this
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says that as long as the counter is less
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than 10 keep looping. So this is what
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this condition is all about and inside
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the loop what we want we need to print
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hello world. So we are printing hello
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world using the print in Python
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and we are increasing counter by one in
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every loop so that the counter goes to
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second loop, third loop, fourth loop
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until the ninth loop and then it will
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print hello world. Always remember that
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whenever you're looping it could be for
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loop or while loop a loop or any program
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always starts with zero.
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So it goes from 0 1 2 3 till 9. So till
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9 it will be 10 times. So it will print
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the hello world for 10 times. And once
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the counter hits 10 the condition
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becomes false and the loop stops
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So let's quickly run this program.
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And let's see the output.
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So if you see I've printed hello world
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for 10 times. 1 2 3 4 5 6 7 8 9 10.
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And there you go. Python happily prints
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hello world 10 times.
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Awesome. So you just learned how to use
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a while loop to repeat actions in
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Python. Loops are like magic. They save
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you from writing the same line of code
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And also here is a fun challenge for
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you. Try changing the program to print
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hello world for about 20 times instead
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of 10. And also comment below how you
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did it. If this video helped you
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understand loops better, don't forget to
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like, subscribe, and tap that bell icon
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so you never miss another Python lesson.
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Remember, every single line of code you
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write takes you one step closer to
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becoming a confident programmer. See you
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in the next one and until then, keep
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coding and keep saying hello world to
