Packages are namespaces which contain modules and packages(sub-packages)
They are simply directories
A package allows a developer to group classes or modules together
Programmers also typically use packages to organize classes belonging to the same category or providing similar functionality
Each package in Python is a directory which MUST contain a special file called __init__.py
This file can be empty, and it indicates that the directory it contains is a Python package, so it can be imported the same way a module can be imported
Packages allow for a hierarchical structuring of the module namespace using dot notation
In the same way that modules help avoid collisions between global variable names, packages help avoid collisions between module names
A package in Java is a folder in a file directory, used to group related classes
Packages are used to avoid name conflicts, and to write a better maintainable code
In Node, a package is a file or directory that is described by a package.json file
Node has a package manager called npm, whose registry contains packages, many of which are also Node modules, or contain Node modules
A package must contain a package.json file in order to be published to the npm registry
A package is dependent on another package, if it uses one or more modules of that package
Apart from the modules provided by a programming language, a program might be required to do various other stuff
