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-: Welcome back.

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Remember in Python that string is written as str

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and this is a special word?

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Actually, it's a built-in, what we call, "function,"

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or a built in action that we can take.

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Now let me ask you this:

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What happens if I do string 100?

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100 is clearly a number, an integer.

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But what if we run the string function on this?

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Let's find out.

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Let's do print here and then run this.

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If I click run, I get a hundred.

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All right.

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But, hmm, is this an int or a string?

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To find that out, once again, let's wrap this

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so the answer of whatever this value is into type,

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like so.

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I know this is a lot of brackets, but remember,

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we're evaluating this piece of code.

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So we're turning 100 into a string,

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or running the string action,

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and then we're gonna check the type of this entire thing,

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and then we're going to print it out.

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If I click run, I see that it's a string type.

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So we've converted 100 into string using this.

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Now, just to confuse you a little bit more,

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what if we do something like int, like this?

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All right, even more brackets. What happens now?

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Can you guess?

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Well, we convert a hundred into a string,

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then convert it back into an integer

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and then we check the type of it,

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which is a class int, and then we print that.

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So remember, this was the same as me saying

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A equals str 100.

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And then B is going to equal int of A,

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because we're evaluating this part.

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And then I'm saying C is going to equal the type

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of whatever B is.

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And then finally we're printing C.

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So that piece of code was the same as doing this.

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Very, very cool.

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Now this is the idea of type conversion.

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Again, if I were to write that down,

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it's called type conversion.

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We're converting the type of our data types

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and you can do that throughout programming.

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And we'll talk a lot about this throughout the course.

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But it's the main reason we have things

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like str, int, we have things like float

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and many other data types that we're gonna talk about.

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I'll see you in the next video.

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Bye-bye.