Working with modules and packages in python
Here we demo how to create python modules and packages using Python.
While developing python application we may have split our code in to multiple files and folders.
A single python file is called as module. A module may contain variables/ functions/ classes.
A folder containing multiple python modules is called as python package. A package contains a python file __init__.py.
If a module need to access a variable / function / class defifed in another module then we have to import that using "import" keyword