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Hey guys, welcome to Day 27 of 100 Days of Code. Today

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we're going to be diving into a Graphical User Interfaces using TKinter,

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and we're also going to be learning more about function arguments.

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So we've already seen a little bit of graphical user interfaces when we use our

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turtle module, but I wanna go a little bit more in depth,

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and I want to show you one of the most popular ways of creating a graphical user

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interface. For example, a program like this in a separate window,

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and we're going to be using the inbuilt TKinter module to do this.

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So we're going to learn how to create labels, how to create buttons,

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how to respond to those button clicks as well as things like text inputs and how

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to lay out and design your programs.

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And while we're doing all of this,

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we're going to be looking at more advanced features of Python functions,

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including things such as how to set default arguments and what these Args and

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Kwargs are.

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So a way of being able to pass an undefined amount of inputs into a function,

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and we'll apply these advanced concepts to build a unit converter program using

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TKinter. This program is going to help us convert miles to kilometers or liters

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to gallons, or whatever little conversion that you might often use. For example,

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let's say that I ran 10 miles and I want to know how many kilometers that is.

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If I go ahead and click calculate,

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you can see it generates the equivalent value in kilometers,

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and you can see that our whole program is nicely laid out.

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So it says 10 miles is equal to 16 in kilometers,

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and it's fully responsive to our inputs.

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This is what we're going to be making as our project,

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a fully-fledged Python graphical user interface program that uses our Python

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code. So once you are ready, head over to the next lesson and let's get started by

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learning a bit more about TKinter.