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In light of this, you will use and see functions in many programming languages and data analytics projects.
As a result, the ability to understand them has become important.
Functions serve a number of benefits:
- You can pass a number of arguments to them to be processed.
- It reduces repetition as the function can be called from many places with a program.
- They are easily identified by using the def keyword in your code.
- A return statement can give you the output of the function to show on the screen or pass to another function.
It compliments r-tutorial-how-to-pass-data-between-functions/ as a result this is a handy bit of functionality used widely across many different programming languages.
Classes by their nature have methods, which are called on the objects that created them ( the class), and can alter their state, whereas a function will run and just return a value.
It is important to understand the distinction as while the two will most likely achieve the same outcome, it is the ability to change the class state that will differentiate the two.