Keywords: functions, input parameters, top-down programming
A function in Python is a block of operations performed when the function is called. The function can take input parameters and use these to make calculations. Functions can also return values when the function is executed.
By writing your code as functions, you can easily reuse the same code several times in different places in the program. This chapter goes through how to create and use functions with the following articles
A significant advantage of functions in python is that you do not need to write the same code multiple times. You can call the function instead. A function is a block of operations that are performed when called. This means that instead of rewriting the same code several times, we can instead reuse code that is run multiple times, in different places in the program. A function can get one or more values, so-called input parameters, and can also send back, return one or no value. By return is meant what the method “returns” when it has performed the operations it contains. A method is always terminated when a value has been returned.
A function in Python performs a sequence, a block of operations when the method is called.
Functions are a very powerful tool because they are entirely independent of other code and can be called from other functions if desired. The uses of functions are many, and they help to structure and simplify the programs we create.
You can imagine a functions like a black box.
A function in Python can be structured in a couple of different ways. On the one hand, you can choose whether the function should take in information, in other words, if the function should take any input. But also what should come out of the function, quite simply, what the function returns and what will be the result when we use the function.
Therefore, in general, we can say that we need to state two things when we create the function:
If we illustrate the different alternatives of methods
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