Function

What is Function ?

• A function is a group of related statements that performs a specific task.

• Functions help break our program into smaller and modular chunks.

• As our program grows larger and larger, functions make it more organized and manageable.

Error

• The function needs to be defined before it can be called. Calling a function before its definition will cause an error.

Arguments

• Functions can take arguments, which can be used to generate the function output.

• You can call the same function with different arguments.

• Even better, you can define functions with more than one argument; separate them with commas.

• Arguments can be used as variables inside the function.

• You can have different statements in your functions, working with the argument variables, such as if statements and loops.

Returning from Functions

• Once you return a value from a function, it immediately stops being executed.

• Any code placed after the return statement won’t be executed.

• A function can only return once, thus, if you need to return multiple values, you can use a list.