Week 4 - modules

Question 1

What is a module?

Answer 1

It is similar to a library.

And the library contains classes and functions.

Question 2

How do you use a module?

Answer 2

You import the module.
To create a module all you need to do is save a file with an extension .py
Module are always written in the lower case.

Question 3

How do you use a function in a module?

Answer 3

You call it by  module_name.function_name.
The dot notation must separate the module name and function name.

Question 4

What is a local variable?

Answer 4

A variable created within a function. Therefore it can only be used in the function.

Question 5

What is a global variable?

Answer 5

A variable within the main body of the program. It can be used inside or outside the function.

Question 6

What does the keyword “global” do?

Answer 6

It makes any variable a global variable, which means even if it is created with the function it can be used anywhere in the program.