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Many reasons exist to store a set of numbers.

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For example, you will need to keep track of the positions of each character in a game, and you might

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want to keep track of a player's high scores as well.

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In data visualizations you will almost always work with a sets of numbers such as temperatures, distances,

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population size or latitude, longitude, values, among other types of numerical sets.

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So lists are ideal for storing sets of numbers, and Python provides a variety of tools to help you

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work efficiently with lists of numbers.

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So once you understand how to use these tools effectively, your code will work well even when your

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list contains millions of items.

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So you can also use the range function.

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So Python's range function makes it easy to generate a series numbers.

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For example, you can use the range function to print a series of numbers like this.

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For my value, my value here in range, for example, from 1 to 10.

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And here we will print the print my value.

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And here you will see us here.

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And here you will see range from one, two, three, four, five, six, seven, eight, nine here.

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So although this code looks like it should print the numbers from 1 to 10, it doesn't print the number

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ten in this example range prints only the numbers from one through ten.

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So I want to explain this by drawing something on the screen here like that, for example, this is

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Range.

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Range.

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Here, for example, we wanted variables.

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One, two, three, four, five, six, seven, eight, nine, nine.

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Oops.

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Nine and ten.

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Here we when we ask range for a number from 1 to 10, it will give us from here.

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And.

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From 1 to 9.

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So this is the number.

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This code will give us here.

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So.

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As I said in this code, the range prints only numbers from one truth for truth nine.

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It's let's run it again.

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And here.

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So this is the another result of the off by one behavior you will see often in programming languages

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and the range function causes Python to start counting at the first value you give it and it stops when

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it reaches the second value you provide because it stops at the second value.

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The output never contains the end value, which would have been ten in this case to print numbers one

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from 1 to 10, you will do this.

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Just 11, right?

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11 And that's it.

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Here.

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As you can see, we printed values from 1 to 10.

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So if your output is different from what you expect when you are using range, try adjusting your end

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value by one.

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So you can also pass range only one argument and it will start a sequence of numbers at zero, for example

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range.

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Range.

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Six here.

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Will return the numbers from 0 to 6.

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So you can also use the range to make a list of numbers.

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So if you want to make a list of numbers, you can convert the results of range directly into list using

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the list function.

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So when you wrap list around the call to range function, the output will be a list of numbers in the

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example the previous section.

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In the example of previous section, we simply printed out series of numbers and we can use list to

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convert that same set of numbers into a list.

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So in order to do that, we will do numbers or my special numbers.

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My special.

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Actual numbers.

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Numbers equals list here and range one.

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One 6 or 111 here.

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So now.

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We have to add here and we will add after that, we will print the my special numbers.

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That's it.

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Here you can see the one, two, three, four, five, six, seven, eight, nine, ten.

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So we can also use the range function to tell Python the skip numbers in a given range.

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If you pass a third argument to a range here, Python uses that value as a step size when generating

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numbers.

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For example, here is our list.

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The even numbers between 1 and 10 we will do here too, and we will do two here again and here.

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And as you can see here, two, four, six, eight and ten.

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So in this example, the range function starts with the value two and then adds two to that value.

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It adds repeatedly until it reaches or passes the end value.

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11 I want to also illustrate this on screen here.

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So here we have one, two, three, four, five.

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Five, six, seven, eight.

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Nine.

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Seven.

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Eight, nine, ten.

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Here.

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So here.

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What you see is.

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So here we will we are seeing that we will start from two and end four from 1011.

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But this means ten here, as you as we explained here.

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So we will start from the two here.

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So we will start first from this.

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Two four, because as you can see here, we are passing two in each number.

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And then we here we come here and here we go to.

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Six.

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And here we come, here and here we go to eight, and here we are.

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And then we are going to ten.

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And this is where our.

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Range ends.

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So you can create almost any sets of numbers or you want to use the.

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So you can also create you can create almost any set of numbers you want to using the range function.

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So for example, consider how might make a list of the first ten square numbers.

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That is the square of each integers from one through ten in Python, which is two asterisks like that.

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So let's actually close this.

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So now here's how you might plot the first ten square numbers onto a list.

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So here we have my special or my squares here, squares, and here we will create an empty list.

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Now we will use the for loop my my value here in range.

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And here we will start from 1 to 11.

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And here we will use the my squares here equals my value asterisk to add an asterisk here.

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And two and here we will use my my ears here that append.

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Append.

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Yeah.

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My value here.

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You must.

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Here my squares that append.

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My square here and it will change with my square equals my value.

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62 And here we will use my squares that append the my.

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Square.

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And that's it.

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And after that, of course, we will need to print the squares here.

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Here, but outside the for loop.

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As you can see here, we are printing outside for loop workers or my spare.

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Yeah, that's it.

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Now let's run it.

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And as you can see here, one, four, nine, 16, 25, 38, 49, 64, 81 and 100.

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So we start with an empty list called squares.

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Actually, let me here.

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So here we start with the empty list called my squares.

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Here, let's actually use that marker.

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So here we start with the empty list called my squares.

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Then we tell Python to loop through each value.

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Loop through each value.

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From one.

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210.

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In this case, we read write 11 using the range function.

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So inside the loop, the current value is raised to the second power and assigned to the variable.

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My square.

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Here.

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Each new value of square is then appended to my square list here.

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As you can see here we are using append here.

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So this worked like that.

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For example, this is our my squares here and here we added and then another loop comes.

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We added another value and then another look loop comes.

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We added another value inside it and until the ten times here.

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So that's it.

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And finally, when the loop has finished running, the list of squares is printed on the screen.