python functions in separate file
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title: a beginner's guide to python functions
in this tutorial, we'll explore python functions, one of the fundamental building blocks of python programming. we'll cover what functions are, how to define and call them, different types of arguments, return values, and more. let's dive in!
1. what are functions?
in python, a function is a block of reusable code that performs a specific task. functions provide modularity to your code by allowing you to break it into smaller, more manageable pieces. you can call a function multiple times throughout your program, making it easier to maintain and debug.
2. defining a function
to define a function in python, you use the def keyword followed by the function name and parentheses containing optional parameters. here's a basic example:
in this example, greet is the function name, and name is a parameter. parameters are variables that hold the values passed to the function when it's called.
3. calling a function
once you've defined a function, you can call it by using its name followed by parentheses containing the arguments you want to pass, if any. continuing from the previous example:
this will output:
4. types of arguments
there are different types of arguments you can pass to a function:
here's an example demonstrating these types:
5. return values
functions can also return values using the return statement. here's an example:
this will output:
6. conclusion
functions are an essential concept in python programming. they allow you to write reusable code, making your programs more organized and easier to maintain. by understanding how to define, call, and use functions effectively, you can write more efficient and scalable python code. experiment with the examples provided in this tutorial to deepen your understanding of python functions. happy coding!
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