Python Web Development Libraries 
         
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                                                                                               Python Web Development Libraries 
                     
                    About the Tutorial 
                    Python provides multiple frameworks for the web development. This tutorial covers five 
                    most  commonly used python libraries which  are  used  for  web  development.  All  the 
                    mentioned  libraries  in  this  tutorial  are  the  first  choice  in  certain  project-specific 
                    conditions/requirements. Also, while trying to select the libraries, the developers interest 
                    (based on their queries and community support) is considered. 
                     Audience 
                    This tutorial is designed to compare the basic features of some of the most commonly 
                    used python frameworks. The target audience for this tutorial is: 
                             Anyone who wants to have a basic understanding of Django, Flask, Pyramid, 
                              Web2py and Dash libraries. 
                             Anyone who wants to compare different Python frameworks and choose the most 
                              suitable framework for their projects. 
                             Anyone who wants to explore Python web technologies in detail. 
                    Prerequisites 
                    Though there is no mandatory requirement for this tutorial, any prior knowledge on below 
                    mentioned technologies will be an added advantage: 
                                  Knowledge of any web related technologies 
                                  Python language 
                                  Developers/users who have previously worked on any python framework will 
                                   definitely find it easier to understand 
                    Copyright & Disclaimer 
                     Copyright 2018 by Tutorials Point (I) Pvt. Ltd.  
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                    Pvt. Ltd.  The user of this e-book is prohibited to reuse, retain, copy, distribute or republish 
                    any contents or a part of contents of this e-book in any manner without written consent 
                    of the publisher.   
                    We strive to update the contents of our website and tutorials as timely and as precisely as 
                    possible, however, the contents may contain inaccuracies or errors. Tutorials Point (I) Pvt. 
                    Ltd. provides no guarantee regarding the accuracy, timeliness or completeness of our 
                    website or its contents including this tutorial. If you discover any errors on our website or 
                    in this tutorial, please notify us at contact@tutorialspoint.com 
                     
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                                                                                                       Python Web Development Libraries 
                       
                      Table of Contents 
                           About the Tutorial ........................................................................................................................................... ii 
                           Audience .......................................................................................................................................................... ii 
                           Prerequisites .................................................................................................................................................... ii 
                           Copyright & Disclaimer .................................................................................................................................... ii 
                           Table of Contents ........................................................................................................................................... iii 
                      1.   Python Web Development Libraries – Introduction .................................................................................. 1 
                           Why Web Development? ................................................................................................................................ 1 
                      2.   Python Web Development Libraries – Python Frameworks ...................................................................... 4 
                           Django ............................................................................................................................................................. 4 
                           Flask ................................................................................................................................................................. 4 
                           Web2py ........................................................................................................................................................... 5 
                           Pyramid............................................................................................................................................................ 6 
                           Dash ................................................................................................................................................................. 7 
                      3.   Python Web Development Libraries – Django Framework ........................................................................ 9 
                           Why should you use Django? .......................................................................................................................... 9 
                           Who’s Using Django? ..................................................................................................................................... 11 
                           Installing and Creating a Django project and app ......................................................................................... 15 
                           Creating Django Project ................................................................................................................................. 16 
                           Configuring Django ........................................................................................................................................ 17 
                           Setting the settings ........................................................................................................................................ 18 
                           Setting up a Database .................................................................................................................................... 19 
                           Starting the Web Server ................................................................................................................................ 20 
                           Django Models ............................................................................................................................................... 21 
                           Creating an application .................................................................................................................................. 22 
                           Creating a blog post model............................................................................................................................ 23 
                           Creating tables for models in your database................................................................................................. 25 
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                           Django Admin ................................................................................................................................................ 25 
                      4.   Python Web Development Libraries – Flask Framework ......................................................................... 28 
                           Flask Startup and Configuration .................................................................................................................... 28 
                           Creating an app with flask ............................................................................................................................. 28 
                           Creating URL Routing ..................................................................................................................................... 29 
                      5.   Python Web Development Libraries – Web2py Framework .................................................................... 36 
                           Installing and Configuring Web2py Framework ............................................................................................ 36 
                           Creating an app using Web2py ...................................................................................................................... 38 
                           Deploying the app on cloud platform ............................................................................................................ 40 
                      6.   Python Web Development Libraries – Pyramid Framework .................................................................... 42 
                           Installing, starting up and configuring ........................................................................................................... 42 
                           Core Concepts ............................................................................................................................................... 43 
                           Configuration ................................................................................................................................................. 43 
                           URL generation .............................................................................................................................................. 43 
                           Views ............................................................................................................................................................. 44 
                           Extensibility ................................................................................................................................................... 44 
                           Running a Hello, Pyramid Program................................................................................................................ 44 
                      7.   Python Web Development Libraries – Dash Framework ......................................................................... 47 
                           Dash Setup ..................................................................................................................................................... 47 
                           Dash or App Layout ....................................................................................................................................... 47 
                           Core Components .......................................................................................................................................... 47 
                           Writing Simple Dash app ............................................................................................................................... 48 
                           Running the Dash app ................................................................................................................................... 49 
                           More about HTML ......................................................................................................................................... 51 
                           Reusable Components ................................................................................................................................... 53 
                           More about Visualization .............................................................................................................................. 54 
                           Markdown ..................................................................................................................................................... 56 
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