REST APIs with Flask and Python - Functions in Python

This video tutorial introduces the concept of functions in Python, explaining how to define and call them. It covers the creation of callable variables, the importance of indentation, and the separation between defining and running code. The tutorial also highlights common mistakes, such as variable shadowing and using functions before they are defined, providing examples and tips for effective function usage.

What keyword is used to define a function in Python?

• def

• func

• define

• function

What is a callable variable in Python?

• A variable that can be executed

• A variable that holds a number

• A variable that stores a string

• A variable that is undefined

What must you do to execute a function after defining it?

• Run the code in a terminal

• Type the function name with brackets

• Type the function name without brackets

• Press the play button

Why is it beneficial to separate code definition from execution conceptually?

• It reduces the number of lines in the code

• It allows for more errors

• It helps in understanding and organizing the code

• It makes the code run faster

What happens if you define a function with the same name as a built-in function?

• It has no effect

• It enhances the built-in function

• It creates a new built-in function

• It overrides the built-in function

What is the issue with shadowing a variable name from an outer scope?

• It makes the code run slower

• It can lead to unexpected behavior

• It creates a new global variable

• It causes a syntax error

What error occurs if you use a function before it is defined?

• ValueError

• SyntaxError

• NameError

• TypeError

What is a potential issue when modifying a global list within a function?

• The list is converted to a string

• The list can have duplicate entries

• The list is deleted

• The list becomes immutable

Why should global variables be defined at the top of the code?

• To prevent syntax errors

• To avoid confusion

• To make the code run faster

• To increase security

What is the result of calling a function multiple times that appends to a list?

• The list is cleared

• The list remains unchanged

• The list is sorted

• The list has multiple new entries