#100DaysOfCode in Python Transcripts
Chapter: Appendix: Python language concepts
Lecture: Concept: Calling functions
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Functions are reusable blocks of functionality.
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And of course, they play an absolutely central role in Python.
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Now, in Python we can have functions that are just stand alone, isolated functions,
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and these are quite common,
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or we can have functions bound to classes and objects
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that bind together specific data about an object along with those behaviors,
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we call those methods.
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The way we define them, interact with them, is basically the same,
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regardless whether they are functions or methods.
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Here you can see we have a main method, we want to call it,
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it takes no parameters, and returns nothing or nothing that we care about,
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so we just say main open close parenthese, like so,
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we can also call functions that take arguments,
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here is a function called input, and it gathers input from the user, on the consoles,
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it will give them a prompt, and this argument we are passing here is a string,
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and this is the prompt to share to the user,
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pauses the input on the console and waits for them to type something and hit enter,
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when they do, the return value comes back
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and is stored in this new variable called "saying".
