Modules

What is a Module?
Consider a module to be the same as a code library.
A file containing a set of functions you want to include in your application.

Create a Module
To create a module just save the code you want in a file with the file extension .py

def greeting(name):
print("Hello, " + name)

Save this code in a file named mymodule.py

Use a Module
Now we can use the module we just created, by using the import statement

import mymodule
mymodule.greeting("Jonathan")
When using a function from a module, use the syntax: module_name.function_name.

Save this file as mymodule.py
person1 = { "name": "John", "age": 36, "country": "Norway" }
import mymodule a = mymodule.person1["age"] print(a)

Renaming a Module:-
Create an alias for mymodule called mx using 'as' keyword.
import mymodule as mx a = mx.person1["age"] print(a)

Import from module:-
mymodule.py:-
def greeting(name): print("Hello, " + name) person1 = { "name": "John", "age": 36, "country": "Norway" }

Driver code:-
from mymodule import person1 print (person1["age"])

When importing using the from keyword, do not use the module name when referring to elements in the module.
Example: person1["age"], not mymodule.person1["age"]