Python Libraries – Python Standard Library & List of Important Libraries

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After Modules and Python Packages, we shift our discussion to Python Libraries.

This Python Library Tutorial, we will discuss Python Standard library and different libraries offered by Python Programming Language: Matplotlib, scipy, numpy, etc.

So, let’s start the Python Libraries Tutorial.

Python Libraries

Python Libraries – Python Standard Library & List of Important Libraries

What is the Python Libraries?

We know that a module is a file with some Python code, and a package is a directory for sub packages and modules. But the line between a package and a Python library is quite blurred.

A Python library is a reusable chunk of code that you may want to include in your programs/ projects.

Compared to languages like C++ or C, a Python libraries do not pertain to any specific context in Python. Here, a ‘library’ loosely describes a collection of core modules.

Essentially, then, a library is a collection of modules. A package is a library that can be installed using a package manager like rubygems or npm.

Python Standard Library

The Python Standard Library is a collection of exact syntax, token, and semantics of Python. It comes bundled with core Python distribution. We mentioned this when we began with an introduction.

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It is written in C, and handles functionality like I/O and other core modules. All this functionality together makes Python the language it is.

More than 200 core modules sit at the heart of the standard library. This library ships with Python.

But in addition to this library, you can also access a growing collection of several thousand components from the Python Package Index (PyPI). We mentioned it in the previous blog.

Important Python Libraries

Next, we will see twenty Python libraries list that will take you places in your journey with Python.

These are also the Python libraries for Data Science.

1. Matplotlib

Matplotlib helps with data analyzing, and is a numerical plotting library. We talked about it in Python for Data Science.

Python Libraries - Python matplotlib

Python Libraries Tutorial- matplotlib

2. Pandas

Like we’ve said before, Pandas is a must for data-science.

It provides fast, expressive, and flexible data structures to easily (and intuitively) work with structured (tabular, multidimensional, potentially heterogeneous) and time-series data.

Python Pandas

Python Libraries Tutorial – Pandas

3. Requests

Requests is a Python Library that lets you send HTTP/1.1 requests, add headers, form data, multipart files, and parameters with simple Python dictionaries.

It also lets you access the response data in the same way.

Python Requests Library

Python Libraries Tutorial- Requests

4. NumPy

It has advanced math functions and a rudimentary scientific computing package.

Python NumPy

Python Libraries Tutorial – NumPy

5. SQLAlchemy

SQLAIchemy Overview

Python Libraries Tutorial – SQLAIchemy Overview

SQLAlchemy is a library with well-known enterprise-level patterns.

It was designed for efficient and high-performing database-access.

6. BeautifulSoup

It may be a bit slow, BeautifulSoup has an excellent XML- and HTML- parsing library for beginners.


Python Libraries Tutorial – BeautifulSoup

7. Pyglet

Pyglet is an excellent choice for an object-oriented programming interface in developing games.

In fact, it also finds use in developing other visually-rich applications for Mac OS X, Windows, and Linux.

In the 90s, when people were bored, they resorted to playing Minecraft on their computers. Pyglet is the engine behind Minecraft.

Python Pyglet

Python Libraries Tutorial – Pyglet

8. SciPy

Next up is SciPy, one of the libraries we have been talking so much about. It has a number of user-friendly and efficient numerical routines.

These include routines for optimization and numerical integration.

Python SciPy

Python Libraries Tutorial- SciPy

9. Scrapy

If your motive is fast, high-level screen scraping and web crawling, go for Scrapy.

You can use it for purposes from data mining to monitoring and automated testing.

Python Scrapy

Python Libraries Tutorial- Scrapy

10. PyGame

PyGame provides an extremely easy interface to the Simple Directmedia Library (SDL) platform-independent graphic, audio, and input libraries.

Python PyGame

Python Libraries Tutorial – PyGame

11. Python Twisted

An event-driven networking engine, Twisted is written in Python, and licensed under the open-source MIT license.

Python Library - Python Twisted

Python Libraries Tutorial – Twisted

12. Pillow

Pillow is a friendly fork of PIL (Python Imaging Library), but is more user-friendly.

If you work with images, Pillow is your best friend.

Python Library - Python Pillow

Python Libraries Tutorial- Pillow

13. pywin32

This provides useful methods and class for interaction with Windows, as the name suggests.

Python Library - Python pywin32

Python pywin32 Library

14. wxPython

It is a wrapper around wxWidgets for Python.

Python Library - wxPython

Python wxPython Library

15. iPython

iPython Python Library has an architecture that facilitates parallel and distributed computing.

With it, you can develop, execute, debug, and monitor parallel applications.

Python Library - iPython

Python Library – iPython

16. Nose

Nose delivers an alternate test discovery and running process for unittest. This intends to mimic py.test’s behavior as much as it can.

Python Library - Python Nose

Python Nose Library

17. Flask

A web framework, Flask is built with a small core and many extensions.

Python Library - Python Flask

Python Flask Library

18. SymPy

It is an open-source library for symbolic math.

With very simple and comprehensible code that is easily extensible, SymPy is a full-fledged Computer Algebra System (CAS).

It is written in Python, and hence does not need external libraries.

Python Library - Python SymPy

Python SymPy Library

19. Fabric

Along with being a library, Fabric is a command-line tool for streamlining the use of SSH for application deployment or systems administration tasks.

With it, you can execute local or remote shell commands, upload/download files, and even prompt running user for input, or abort execution.

Python Library - Python Fabric

Python Fabric Library

20. PyGTK

PyGTK lets you easily create programs with a GUI (Graphical User Interface) with Python.

Python Library

Python PyGTK Library

So, this was all about Python Libraries Tutorial. Hope you like our explanation.

Python Interview Questions on Libraries

  1. What are libraries in Python?
  2. What is the use of libraries in Python?
  3. How do Python libraries work?
  4. How to install all the Python libraries?
  5. Name some  commonly used Python libraries.


Now you know which libraries to go for if you choose to extend a career in Python. Many of these help us with data-science as well.

Or if you wish to go out of your way, create your own library, and get it published with the PyPI; help the community grow.

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5 Responses

  1. yash says:

    what after basics of python?

  2. Harun says:

    hi, do you know a way to understand Python library? I mean its kinda difficult to learn/read documentaries rather than any website. But tbh, I’m more interested to learn from documentaries so please let me know. Thank you

    • DataFlair says:

      Hi Harun,
      We can find multiple blogs on most of the Python libraries. These might not cover every aspect related to the libraries, but do contain a good amount of information. Another suggestion to get your work done is you can search for the functionality want to get done. I hope it helps!

  3. Dr. Saaie BK says:

    I am a retired engineer having done programing courses. I am learning Python. I don’t understand anything in this article. you have not given descriptions. For example while writing on BeautifulSoup, you should have stated what is BeautifulSoup and where and how it is used. I request to re-walk this article and elaborate it.

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