Function

Definition

A function in Python is a reusable block of code that performs a specific task. It can accept input arguments and return output values.

5 Must Know Facts For Your Next Test

1. A function is defined using the 'def' keyword followed by the function name and parentheses.
2. Arguments are specified within the parentheses during function definition and can have default values.
3. The 'return' statement is used to send a result back from the function to the caller.
4. Functions help in organizing code, making it more readable and reusable.
5. A function must be called using its name followed by parentheses to execute its block of code.

Review Questions

• How do you define a function in Python?
• What is the purpose of the 'return' statement in a function?
• Why are functions useful in programming?

Related terms

Argument:

A value passed to a function when it is called, which can be used within the function.

Return Value:

The value that a function sends back to its caller after execution via the 'return' statement.

Scope:

The region within a program where a variable or object is accessible, such as local or global scope.