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Hey everyone, welcome back to our Python
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beginner series. So today we are going
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to check the presence of an element in
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the list. In the previous episodes, we
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have gone through what is list and some
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exercises regarding the list, its
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built-in functions and everything
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related to the list. If you guys missed
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that episode, I want you to go back and
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check that and come back here and start
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continue learning from here.
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So here we are going to check how to So
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here we are going to learn how to check
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if a number exists in the list or not.
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So here's the idea. We'll ask the user
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to type in a list of numbers. Then we'll
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ask for another number and finally we'll
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check if that number is inside the list
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Well, it is actually easy. But this
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small concept is used all the time in
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All right, let's write this code
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together to understand step by step.
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and dotsplit. I'm separating it right
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away using the split method. It's
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separated with comma. Okay.
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for the number what number the user want
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Okay. So number equal to input.
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So here is where the actual game begins.
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So blindly type whatever I'm typing
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here. Later we'll understand what's
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going on. So check using
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in list input. If there's a number in
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And also I'm using f strings. I have
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already made videos multiple exercises
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on f strings. So print f string
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So we took input from the user. For
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example, I give 1 2 3 and then I give
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the number that I want the program to
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check whether it is there in the list or
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not. Like for example, three. If three
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is in the list, if it if this condition
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is true, if three is in the list, then
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it will print that the number three is
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in the list. Like for example, if I give
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five as input and the five is no, there
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is no chance that five is in the list
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because we didn't give number five in
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the list. Okay. If the five is in the
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list, then it will check if five in
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list. No, then it is false. Then
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automatically it will jump here and it
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will print that the number five is not
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So this is what going to happen.
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1 2 3. Three. The number three is in the
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The number five is not in the list. So
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this is what happens. So what happening
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here? If five in list like in order to
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check whether the number is whether the
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element is in the list or not you just
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have to simply use that if number in. So
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you have to use in in what in list. So
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in list if there is a number or not you
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are asking the program.
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So that is how you will do it. So this
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is just simple syntax to you know
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remember that is why if you know English
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then Python is really easy for you to
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understand. It is very simple you see if
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number in list even in English or even
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when we ask ourselves we obviously use
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this syntax in our mind to check in the
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program. So it will be even easy for us
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to you know remember even when we are
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you know during tracing or when we are
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running something when we want to see
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what's going on there this syntax is
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really easy to remember so that is why
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Python is really you know fast and easy
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to learn language I could say
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so I want I will explain once again so
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when we use dotsplit so it takes the
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input like 1 2 three and turns it into a
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list of items like this.
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Then we ask the user the number to
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check. One more number to check.
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Finally, we use a simple if else
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statement. If the number is inside the
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list, then it will print yes, it is
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there. Else, no, not found.
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And that's it. We just built a simple
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program that checks if something exist
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inside a list or not. Believe me, this
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is kind of the logic you'll use a lot as
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you get better in Python. All right,
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friends, before you go, let me ask you
7:18
this. If this tiny program made you
7:20
smile even once, or if you learned
7:23
something new today, imagine how much
7:25
more you learn if you stick around. So
7:28
go ahead, hit that subscribe button like
7:30
you're pressing enter in Python. And
7:32
don't forget to turn on the bell
7:33
notification so you don't miss the next
7:35
program we build together. Keep coding,
7:37
keep exploring, and I'll see you in the
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next video. So happy coding.
