Python In Practice - 15 Projects to Master Python - callable( )

The video tutorial explains how to determine if a function instance is callable. It begins by introducing the concept of callable functions and proceeds to demonstrate the creation of a simple function. The tutorial then tests the function's callability using the print function, highlighting that parentheses are not needed to check if a function is callable. The video concludes by confirming the function's callability through a program run.

What is the initial step in determining if a function instance is callable?

• Checking the output of the function

• Using parentheses after the function name

• Creating a function similar to 'print'

• Executing the function directly

How can you verify if a function instance is callable?

• By using a loop to iterate over the function

• By directly calling the function with parentheses

• By checking the function's return type

• By using the 'print' function and passing the instance as an argument

What is the significance of not using parentheses after the function name?

• It means the function will return a string

• It indicates that the function is not being called immediately

• It shows that the function is invalid

• It suggests that the function is a built-in function

What does the program output indicate about the function?

• The function is undefined

• The function is not callable

• The function is callable

• The function returns an error

What is the purpose of the demonstration in the final section?

• To demonstrate a loop structure

• To show that the function can be called successfully

• To highlight a variable declaration

• To illustrate a syntax error