REST APIs with Flask and Python - Functions Returning Values

This video tutorial explains the concept of return values in Python functions. It highlights the default behavior of functions returning 'None' and the importance of explicitly returning values. The tutorial differentiates between printing and returning values, discusses the implications of multiple return statements, and advises against returning different data types from a single function. Through examples, it demonstrates common mistakes and best practices for handling return values in Python programming.

What is the default return value of a Python function if no return statement is specified?

• 0

• An empty string

• None

• False

How can you ensure a function returns a specific value instead of 'None'?

• Use a return statement with the desired value

• Assign the value to a global variable

• Call the function twice

• Use a print statement

What happens when a return statement is executed in a function?

• The function prints the return value

• The function continues to execute the remaining lines

• The function terminates and returns the specified value

• The function pauses and waits for user input

What is a common mistake when using print and return in a function?

• Using print instead of return

• Using return instead of print

• Expecting a print statement to return a value

• Expecting a return statement to print a value

What is the effect of placing a return statement before a print statement in a function?

• The print statement will execute first

• The function will return None

• The print statement will not execute

• The function will throw an error

Why is it not recommended to have a function return different types of data?

• It can cause syntax errors

• It is against Python's rules

• It makes the code run slower

• It can lead to unexpected behavior when performing operations on the return value

In a function with multiple return statements, what determines which return statement is executed?

• The first return statement in the function

• All return statements are executed

• The last return statement in the function

• The return statement that is reached first during execution