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One of the most fundamental concepts that you need to know in Python is something called a variable

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a variable.

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Essentially points to a place holder in memory.

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Think of this as kind of like a cookie jar or something that you store value in a value is going to

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be stored in a location in a computer's memory and you're going to refer to that location via a variable

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in this example I've got to put two running in a June 23 topology.

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Don't worry about that.

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Just note that I'm going to start python on the Ubuntu computer.

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And then what I'm gonna do is create a variable called a not a great naming convention but there you

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go and I'm gonna specify a value of five I can use I.D. to see the memory location of that variable

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so that memory location which is not easy to work with it's easier to work with the values such as A

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or something better like root a one or some kind of reference has the value 5 stored in it so notice

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5 displays 5 a displaced 5 because A is pointing to a location in memory where 5 is contained and that

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memory allocation is that be all set to 7.

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So if I type Ida B I can see the memory allocation of B let's create another variable C and I'll set

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C equal to A plus B C's memory location is this but the value of C is twelve so a variable is a basic

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building block in Python that you need to know just think of it as referencing a part of computer memory

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where I've stored a value I can change the value of variables so notice previously a were stored in

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this memory location but if I say A equals one two three now and then I look at the memory location

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of a notice it's changed the value one two three is now stored in a different part of the computer's

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memory make sure that you know what variables are they are again a fundamental building block in Python.