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<!DOCTYPE html>
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<h1>Introduction</h1>
<p>You're knee deep in learning the <a href="http://www.python.org/">Python</a>
programming language. The syntax is starting to make sense. The first
few "<em>ahh-ha</em>!" moments are hitting you as you're learning conditional
statements, for loops and classes while playing around with the open source
libraries that make Python such an amazing language.</p>
<p>Now you want to take your initial Python knowledge and make something real.
A real web application that's available on the web which you can show off or
sell as a service to other people. That's where Full Stack Python comes in.
You've come to the right place to learn everything you need to deploy and
run a production Python web application.</p>
<p>This guide branches out on topic because your learning needs depend on what
you're currently trying to do. </p>
<h3>Let's get started. What do you need to do right now?</h3>
<h1>Web frameworks</h1>
<p>A web framework is a code library that makes a developer's life easier when
building reliable, scalable and maintainable web applications.</p>
<h2>Why are web frameworks necessary?</h2>
<p>Web frameworks encapsulate what developers have learned over the past twenty
years while programming sites and applications for the web. Frameworks make
it easier to reuse code for common HTTP operations and to structure projects
so developers with knowledge of the framework can more quickly build and
maintain the application.</p>
<h2>Common web framework functionality</h2>
<p>Frameworks provide functionality in their code or through extensions to
perform common operations required to run web applications. These common
operations include:</p>
<ol>
<li>URL routing</li>
<li>HTML, XML, JSON, and other output format templating</li>
<li>Database manipulation</li>
<li>Security against Cross-site request forgery (CSRF) and other attacks</li>
</ol>
<p>Not all web frameworks include code for all of the above
functionality. Frameworks fall somewhere between simply executing a
single use case and attempting to be everything to every developer with
increased complexity. Some frameworks take the "batteries-included" approach
where everything possible comes bundled with the framework while others
have a minimal code library that plays well with extensions.</p>
<p>For example, the Django web application framework includes an
Object-Relational Mapping (ORM) layer that abstracts relational database
read, write, query, and delete operations. However, Django's ORM
cannot work without significant modification on non-relational databases such as
<a href="http://www.mongodb.org/">MongoDB</a>.
Some other web frameworks such as Flask and Pyramid are easier to
use with non-relational databases by incorporating external Python libraries.
There is a spectrum between minimal functionality with easy extensibility and
including everything in the framework with tight integration.</p>
<h2>General web framework resources</h2>
<ul>
<li>
<p>"<a href="http://www.jeffknupp.com/blog/2014/03/03/what-is-a-web-framework/">What is a web framework?</a>"
by <a href="https://twitter.com/jeffknupp">Jeff Knupp</a>
is an in-depth explanation of what web frameworks are and their relation
to web servers.</p>
</li>
<li>
<p>Check out the answer to the
"<a href="http://stackoverflow.com/questions/4507506/what-is-a-web-framework-how-does-it-compare-with-lamp">What is a web framework and how does it compare to LAMP?</a>"
question on Stack Overflow.</p>
</li>
<li>
<p><a href="http://youtu.be/W6KCPXl6Zuc">Frameworks</a> is a really well done short video
that explains how to choose between web frameworks. The author has some
particular opinions about what should be in a framework. For the most part
I agree although I've found sessions and database ORMs to be a helpful
part of a framework when done well.</p>
</li>
<li>
<p><a href="https://www.airpair.com/python/posts/django-flask-pyramid">Django vs Flask vs Pyramid: Choosing a Python Web Framework</a>
contains background information and code comparisons for similar
web applications built in these three big Python frameworks.</p>
</li>
<li>
<p>This <a href="http://www.konstruktor.ee/blog/python-web-framework-roundup/">Python web framework roundup</a>
covers Django, Flask and Bottle as well as several other lesser known Python
frameworks.</p>
</li>
<li>
<p>This fascinating blog post takes a look at the
<a href="http://grokcode.com/864/snakefooding-python-code-for-complexity-visualization/">code complexity of several Python web frameworks</a>
by providing visualizations based on their code bases.</p>
</li>
<li>
<p><a href="http://www.reddit.com/r/webdev/comments/2les4x/what_frameworks_do_you_use_and_why_are_they/">What web frameworks do you use and why are they awesome?</a>
is a language agnostic Reddit discussion on web frameworks. It's interesting
to see what programmers in other languages like and dislike about their
suite of web frameworks compared to the main Python frameworks.</p>
</li>
</ul>
<h2>Web frameworks learning checklist</h2>
<p><i class="fa fa-check-square-o"></i>
Choose a major Python web framework (<a href="/django.html">Django</a> or
<a href="/flask.html">Flask</a> are recommended) and stick with it. When you're just
starting it's best to learn one framework first instead of bouncing around
trying to understand every framework. </p>
<p><i class="fa fa-check-square-o"></i>
Work through a detailed tutorial found within the resources links on the
framework's page.</p>
<p><i class="fa fa-check-square-o"></i>
Study open source examples built with your framework of choice so you can
take parts of those projects and reuse the code in your application.</p>
<p><i class="fa fa-check-square-o"></i>
Build the first simple iteration of your web application then go to
the <a href="/deployment.html">deployment</a> section to make it accessible on the
web.</p>
<h3>Which web framework do you want to learn about?</h3>
<h1>Django</h1>
<p><a href="http://www.djangoproject.com/">Django</a> is a widely used Python web
application framework with a "batteries-included" philosophy. The principle
behind batteries-included is that the common functionality for building
web applications should come with the framework instead of as separate
libraries. </p>
<p><a href="http://www.djangoproject.com/" style="border: none;"><img src="theme/img/django-logo-positive.png" width="100%" alt="Official Django logo. Trademark Django Software Foundation." class="technical-diagram" /></a></p>
<p>For example,
<a href="https://docs.djangoproject.com/en/dev/topics/auth/">authentication</a>,
<a href="https://docs.djangoproject.com/en/dev/topics/http/urls/">URL routing</a>, a
<a href="https://docs.djangoproject.com/en/dev/topics/templates/">templating system</a>,
an <a href="https://docs.djangoproject.com/en/dev/topics/db/">object-relational mapper</a>,
and <a href="https://docs.djangoproject.com/en/dev/topics/migrations/">database schema migrations</a>
(as of version 1.7) are all included with the <a href="https://pypi.python.org/pypi/Django/">Django framework</a>.
Compare that included functionality to the Flask framework which requires a
separate library such as
<a href="https://flask-login.readthedocs.org/en/latest/">Flask-Login</a>
to perform user authentication. </p>
<p>The batteries-included and extensibility philosophies are simply two different
ways to tackle framework building. Neither philosophy is inherently better
than the other.</p>
<h2>Why is Django a good web framework choice?</h2>
<p>The Django project's stability, performance and community have grown
tremendously over the past decade since the framework's creation. Detailed
tutorials and best practices are readily available on the web and in books.
The framework continues to add significant new functionality such as
<a href="https://docs.djangoproject.com/en/dev/topics/migrations/">database migrations</a>
with each release. </p>
<p>I highly recommend the Django framework as a starting place for new Python web
developers because the official documentation and tutorials are some of the
best anywhere in software development. Many cities also have Django-specific
groups such as <a href="http://www.meetup.com/django-district/">Django District</a>,
<a href="http://www.meetup.com/djangoboston/">Django Boston</a> and
<a href="http://www.meetup.com/The-San-Francisco-Django-Meetup-Group/">San Francisco Django</a>
so new developers can get help when they are stuck.</p>
<p>There's some debate on whether
<a href="http://www.jeffknupp.com/blog/2012/12/11/learning-python-via-django-considered-harmful/">learning Python by using Django is a bad idea</a>.
However, that criticism is invalid if you take the time to learn the Python
syntax and language semantics first before diving into web development.</p>
<h2>Django tutorials</h2>
<ul>
<li>
<p><a href="http://www.tangowithdjango.com/book/">Tango with Django</a> is an extensive
set of free introductions to using the most popular Python web framework. Several
current developers said this book really helped them get over the initial
framework learning curve.</p>
</li>
<li>
<p>The <a href="http://tutorial.djangogirls.org/en/index.html">Django Girls Tutorial</a>
is a great tutorial that doesn't assume any prior knowledge of Python or
Django while helping you build your first web application.</p>
</li>
<li>
<p><a href="http://twoscoopspress.com/products/two-scoops-of-django-1-6">2 Scoops of Django</a>
by Daniel Greenfeld and Audrey Roy is well worth the price of admission if
you're serious about learning how to correctly develop Django websites.</p>
</li>
<li>
<p><a href="http://effectivedjango.com/">Effective Django</a> is another free introduction
to the web framework.</p>
</li>
<li>
<p><a href="http://www.obeythetestinggoat.com/">Test-Driven Development with Python</a>
focuses on web development using Django and JavaScript. This book uses
the development of a website using the Django web framework as a real
world example of how to perform test-driven development (TDD). There is
also coverage of NoSQL, websockets and asynchronous responses. The book can
be read online for free or purchased in hard copy via O'Reilly.</p>
</li>
<li>
<p>The <a href="http://www.reddit.com/r/django">Django subreddit</a> often has links to
the latest resources for learning Django and is also a good spot to ask
questions about it.</p>
</li>
<li>
<p>Lincoln Loop wrote a
<a href="http://lincolnloop.com/django-best-practices/">Django Best Practices guide</a>
for the community.</p>
</li>
<li>
<p>Steve Losh wrote an incredibly detailed <a href="http://stevelosh.com/blog/2011/06/django-advice/">Django Advice guide</a>.</p>
</li>
<li>
<p><a href="http://programming.oreilly.com/2014/04/simplifying-django.html">Lightweight Django</a>
has several nice examples for breaking Django into smaller simplier
components.</p>
</li>
<li>
<p>The <a href="https://github.com/rogueleaderr/definitive_guide_to_django_deployment">Definitive Guide to Django Deployment</a>
explains the architecture of the resulting set up and includes Chef scripts
to automate the deployment.</p>
</li>
<li>
<p><a href="http://agiliq.com/blog/2014/08/deploying-a-django-app-on-amazon-ec2-instance/">Deploying a Django app on Amazon EC2 instance</a>
is a detailed walkthrough for deploying an example Django app to Amazon
Web Services.</p>
</li>
<li>
<p>This <a href="http://aliteralmind.wordpress.com/2014/09/21/jquery_django_tutorial/">step-by-step guide for Django</a>
shows how to transmit data via AJAX with JQuery.</p>
</li>
<li>
<p><a href="http://www.nickpolet.com/blog/deploying-django-on-aws/1/">Deploying Django on AWS</a>
is another walkthrough for deploying Django to AWS.</p>
</li>
<li>
<p><a href="https://github.com/rosarior/awesome-django">django-awesome</a> is a curated
list of Django libraries and resources.</p>
</li>
<li>
<p><a href="https://realpython.com/learn/start-django/">Starting a Django Project</a> answers the question, “How do I set up a Django (1.5, 1.6, or /1.7) project from scratch?”</p>
</li>
<li>
<p>The <a href="http://www.revsys.com/blog/2014/nov/21/recommended-django-project-layout/">recommended Django project layout</a>
is helpful for developers new to Django to understand how to structure
the directories and files within apps for projects.</p>
</li>
<li>
<p>The <a href="http://irisbeta.com/article/245366784/the-django-request-response-cycle/">Django Request-Response Cycle</a>
explains what happens when you visit a webpage generated by Django.</p>
</li>
</ul>
<h2>Django videos</h2>
<ul>
<li>
<p>Kate Heddleston and I gave a talk at DjangoCon 2014 called
<a href="https://www.youtube.com/watch?v=QrFEKghISEI">Choose Your Own Django Deployment Adventure</a>
which walked through many of the scenarios you'd face when deploying your
first Django website.</p>
</li>
<li>
<p><a href="https://godjango.com/">GoDjango</a> screencasts and tutorials are free short
videos for learning how to build Django applications.</p>
</li>
<li>
<p><a href="http://gettingstartedwithdjango.com/">Getting Started with Django</a> is a
series of video tutorials for the framework.</p>
</li>
<li>
<p>The videos and slides from
<a href="http://www.djangounderthehood.com/talks/">Django: Under the Hood 2014</a>
are from Django core commiters and provide insight into the ORM,
internationalization, templates and other topics.</p>
</li>
<li>
<p>DjangoCon US videos from
<a href="https://www.youtube.com/playlist?list=PLE7tQUdRKcybbNiuhLcc3h6WzmZGVBMr3">2014</a>,
<a href="http://www.youtube.com/user/TheOpenBastion/videos">2013</a>,
<a href="http://pyvideo.org/category/23/djangocon-2012">2012</a>,
<a href="http://pyvideo.org/category/3/djangocon-2011">2011</a>, as well as<br />
<a href="http://pyvideo.org/category">earlier US and DjangoCon EU conferences</a> are
all available free of charge.</p>
</li>
</ul>
<h2>Django 1.7-specific resources</h2>
<ul>
<li>
<p>Paul Hallett wrote a
<a href="https://www.twilio.com/blog/2014/10/upgrading-your-django-reusable-app-to-support-django-1-7.html">detailed Django 1.7 app upgrade guide</a>
on the Twilio blog from his experience working with the django-twilio
package.</p>
</li>
<li>
<p><a href="http://pyvideo.org/video/2630/designing-djangos-migrations">Designing Django's Migrations</a>
covers Django 1.7's new migrations from the main programmer
of South and now Django's built-in migrations, Andrew Godwin.</p>
</li>
<li>
<p>Real Python's <a href="https://realpython.com/blog/python/django-migrations-a-primer/">migrations primer</a>
explores the difference between South's migrations and the built-in
Django 1.7 migrations as well as how you use them.</p>
</li>
<li>
<p>Andrew Pinkham's "Upgrading to Django 1.7" series is great learning
material for understanding what's changed in this major release and
how to adapt your Django project.
<a href="http://andrewsforge.com/article/upgrading-django-to-17/part-1-introduction-and-django-releases/">Part 1</a>,
<a href="http://andrewsforge.com/article/upgrading-django-to-17/part-2-migrations-in-django-16-and-17/">part 2</a> and
<a href="http://andrewsforge.com/article/upgrading-django-to-17/part-3-django-17-new-features/">part 3</a>
and
<a href="http://andrewsforge.com/article/upgrading-django-to-17/part-4-upgrade-strategies/">part 4</a>
are now all available to read.</p>
</li>
<li>
<p><a href="https://lincolnloop.com/blog/integrating-front-end-tools-your-django-project/">Integerating Front End Tools with Django</a>
is a good post to read for figuring out how to use <a href="http://gulpjs.com/">Gulp</a>
for handling front end tools in development and production Django sites.</p>
</li>
</ul>
<h2>Django with Angular (Djangular) resources</h2>
<ul>
<li>
<p><a href="http://blog.kevinastone.com/getting-started-with-django-rest-framework-and-angularjs.html">Getting Started with Django Rest Framework and AngularJS</a>
is a very detailed introduction to Djangular with example code. </p>
</li>
<li>
<p><a href="https://thinkster.io/brewer/angular-django-tutorial/">Building Web Applications with Django and AngularJS</a>
is a very detailed guide for using Django as an API layer and AngularJS
as the MVC front end in the browser.</p>
</li>
<li>
<p>This <a href="http://blog.mourafiq.com/post/55034504632/end-to-end-web-app-with-django-rest-framework">end to end web app with Django-Rest-Framework & AngularJS part 1</a>
tutorial along with
<a href="http://blog.mourafiq.com/post/55099429431/end-to-end-web-app-with-django-rest-framework">part 2</a>,
<a href="http://blog.mourafiq.com/post/58725341511/end-to-end-web-app-with-django-rest-framework">part 3</a>
and
<a href="http://blog.mourafiq.com/post/58726121556/end-to-end-web-app-with-django-rest-framework">part 4</a>
creates an example blog application with Djangular. There is also a
corresponding <a href="https://github.com/mouradmourafiq/django-angular-blog">GitHub repo</a>
for the project code.</p>
</li>
</ul>
<h2>Django ORM resources</h2>
<p>The <a href="https://docs.djangoproject.com/en/dev/topics/db/">Django ORM</a> works well
for simple and medium-complexity database operations. However, there are often
complaints that the ORM makes complex queries much more complicated than
writing straight SQL or using <a href="http://www.sqlalchemy.org/">SQLAlchemy</a>. </p>
<p>It's technically possible to drop down to SQL but it ties the queries to a
specific database implementation. The ORM is coupled closely with Django so
replacing the default ORM with SQLAlchemy is currently a hack workaround. Note
though that some of the Django core committers believe it is only a matter of
time before the default ORM is replaced with SQLAlchemy. It will be a large
effort to get that working though so it's likely to come in Django 1.9 or
later.</p>
<p>Since the majority of Django projects are tied to the default ORM, it's best to
read up on advanced use cases and tools for doing your best work within the
existing framework.</p>
<ul>
<li>
<p><a href="http://www.dabapps.com/blog/django-models-and-encapsulation/">Django models, encapsulation and data integrity</a>
is a detailed article by Tom Christie on encapsulating Django models for
data integrity.</p>
</li>
<li>
<p><a href="http://django-debug-toolbar.readthedocs.org/en/1.2/">Django Debug Toolbar</a>
is a powerful Django ORM database query inspection tool. Highly recommended
during development to ensure you're writing reasonable query code.
<a href="http://mtford.co.uk/blog/2/">Django Silk</a> is another inspection tool and
has capabilities to do more than just SQL inspection.</p>
</li>
<li>
<p><a href="http://reinout.vanrees.org/weblog/2014/05/06/making-faster.html">Making a specific Django app faster</a>
is a Django performance blog post with some tips on measuring performance
and optimizing based on the measured results.</p>
</li>
<li>
<p><a href="https://speakerdeck.com/alex/why-i-hate-the-django-orm">Why I Hate the Django ORM</a>
is Alex Gaynor's overview of the bad designs decisions, some of which he
made, while building the Django ORM.</p>
</li>
<li>
<p><a href="https://speakerdeck.com/craigkerstiens/going-beyond-django-orm-with-postgres">Going Beyond Django ORM with Postgres</a>
is specific to using PostgreSQL with Django.</p>
</li>
<li>
<p><a href="http://www.calazan.com/migrating-django-app-from-mysql-to-postgresql/">Migrating a Django app from MySQL to PostgreSQL</a>
is a quick look at how to move from MySQL to PostgreSQL. However, my guess
is that any Django app that's been running for awhile on one relational
database will require a lot more work to port over to another backend
even with the power of the ORM.</p>
</li>
<li>
<p><a href="http://blog.kevinastone.com/django-model-descriptors.html">Django Model Descriptors</a>
discusses and shows how to incorporate business logic into Django models
to reduce complexity from the views and make the code easier to reuse across
separate views.</p>
</li>
</ul>
<h2>Static and media files</h2>
<p>Deploying and handling static and media files can be confusing for new
Django developers. These resources along with the
<a href="/static-content.html">static content</a> page are useful for figuring out how
to handle these files properly.</p>
<ul>
<li>
<p><a href="http://www.caktusgroup.com/blog/2014/11/10/Using-Amazon-S3-to-store-your-Django-sites-static-and-media-files/">Using Amazon S3 to Store your Django Site's Static and Media Files</a>
is a well written guide to a question commonly asked about static and
media file serving.</p>
</li>
<li>
<p><a href="http://www.revsys.com/blog/2014/dec/03/loading-django-files-from-code/">Loading Django FileField and ImageFields from the file system</a>
shows how to load a model field with a file from the file system.</p>
</li>
</ul>
<h2>Open source Django example projects</h2>
<ul>
<li>
<p><a href="https://github.com/makaimc/txt2react">Txt 2 React</a> is a full Django web
app that allows audiences to text in during a presentation with feedback
or questions.</p>
</li>
<li>
<p><a href="https://github.com/ustream/openduty">Openduty</a> is a website status checking
and alert system similar to PagerDuty.</p>
</li>
<li>
<p><a href="https://github.com/myusuf3/courtside">Courtside</a> is a pick up sports web
application written and maintained by the author of PyCoder's Weekly.</p>
</li>
<li>
<p>These two Django Interactive Voice Response (IVR) system web application
repositorities <a href="https://github.com/phalt/twilio-django-part-1">part 1</a> and
<a href="https://github.com/phalt/twilio-django-part-2">part 2</a> show you how to
build a really cool Django application. There's also an accompanying
<a href="https://www.twilio.com/blog/2014/07/build-an-ivr-system-with-twilio-and-django.html">blog post</a>
with detailed explanations of each step.</p>
</li>
<li>
<p><a href="https://github.com/taigaio/taiga-back">Taiga</a> is a project management
tool built with Django as the backend and AngularJS as the front end.</p>
</li>
</ul>
<h2>Django project templates</h2>
<ul>
<li>
<p><a href="https://github.com/caktus/django-project-template">Caktus Group's Django project template</a>
is Django 1.6+ ready.</p>
</li>
<li>
<p><a href="https://github.com/pydanny/cookiecutter-django">Cookiecutter Django</a> is a
project template from Daniel Greenfeld, for use with Audrey Roy's
<a href="https://github.com/audreyr/cookiecutter">Cookiecutter</a>. Heroku
deployment-ready.</p>
</li>
<li>
<p><a href="https://github.com/twoscoops/django-twoscoops-project">Two Scoops Django project template</a>
is also from the PyDanny and Audrey Roy. This one provides a quick scaffold
described in the Two Scoops of Django book.</p>
</li>
</ul>
<h2>Django learning checklist</h2>
<p><i class="fa fa-check-square-o"></i>
<a href="https://docs.djangoproject.com/en/dev/topics/install/">Install Django</a> on
your local development machine.</p>
<p><i class="fa fa-check-square-o"></i>
Work through the initial
<a href="https://docs.djangoproject.com/en/dev/intro/tutorial01/">"polls" tutorial</a>.</p>
<p><i class="fa fa-check-square-o"></i>
Build a few more simple applications using the tutorial resources found
in the "Django resources" section.</p>
<p><i class="fa fa-check-square-o"></i>
Start coding your own Django project with help from the
<a href="https://docs.djangoproject.com/en/dev/">official documentation</a> and
resource links below. You'll make plenty of mistakes which is critical
on your path to learning the right way to build applications.</p>
<p><i class="fa fa-check-square-o"></i>
Read <a href="http://www.amazon.com/Two-Scoops-Django-Best-Practices/dp/098146730X/ref=sr_1_2?ie=UTF8&qid=1391562062&sr=8-2&tag=mlinar-20">2 Scoops of Django</a>
to understand Django best practices and learn better ways of building
Django web applications.</p>
<p><i class="fa fa-check-square-o"></i>
Move on to the <a href="/deployment.html">deployment section</a> to get your Django
project on the web.</p>
<h3>What do you need to learn next for your Django app?</h3>
<h1>Flask</h1>
<p><a href="http://flask.pocoo.org/">Flask</a> is a Python web framework built with a
<a href="http://flask.pocoo.org/docs/design/">small core and easy-to-extend philosophy</a>.
<a href="http://flask.pocoo.org/" style="border: none;"><img src="theme/img/flask.png" width="100%" alt="Official Flask logo. Flask Artwork License." class="technical-diagram" /></a></p>
<h2>Why is Flask a good web framework choice?</h2>
<p>Flask is considered more
<a href="http://blog.startifact.com/posts/older/what-is-pythonic.html">Pythonic</a>
than Django because Flask web application code is in most cases more explicit.
Flask is easy to get started with as a beginner because there is little
boilerplate code for getting a simple app up and running. </p>
<p>For example, here's a valid "hello world" web application with Flask (the
equivalent in Django would be significantly more code):</p>
<div class="codehilite"><pre><span class="n">from</span> <span class="n">flask</span> <span class="n">import</span> <span class="n">Flask</span>
<span class="n">app</span> <span class="o">=</span> <span class="n">Flask</span><span class="p">(</span><span class="n">__name__</span><span class="p">)</span>
<span class="err">@</span><span class="n">app</span><span class="p">.</span><span class="n">route</span><span class="p">(</span><span class="sc">'/'</span><span class="p">)</span>
<span class="n">def</span> <span class="n">hello_world</span><span class="p">()</span><span class="o">:</span>
<span class="k">return</span> <span class="err">'</span><span class="n">Hello</span> <span class="n">World</span><span class="o">!</span><span class="err">'</span>
<span class="k">if</span> <span class="n">__name__</span> <span class="o">==</span> <span class="err">'</span><span class="n">__main__</span><span class="err">'</span><span class="o">:</span>
<span class="n">app</span><span class="p">.</span><span class="n">run</span><span class="p">()</span>
</pre></div>
<p>Flask was also written several years after Django and therefore
learned from the Python community's reactions as the framework evolved.
Jökull Sólberg wrote a great piece articulating to this effect in his
<a href="http://jokull.calepin.co/my-flask-to-django-experience.html">experience switching between Flask and Django</a>.</p>
<h2>Flask resources</h2>
<p>The 18-part Flask mega tutorial is an absolutely amazing starting
resource for using the Flask framework. Yes, there are a lot of posts in
the series. However, each post is focused on a single topic to contain
the complexity while the reader is learning the framework. The whole
series is well worth an in-depth read-through. The
<a href="https://twitter.com/miguelgrinberg">author</a> also wrote the new
<a href="http://shop.oreilly.com/product/0636920031116.do">O'Reilly Flask Web Development</a>
book which is an excellent learning resource.</p>
<ul>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-i-hello-world">Part 1: Hello World</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-ii-templates">Part 2: Templates</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-iii-web-forms">Part 3: Web Forms</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-iv-database">Part 4: Database</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-v-user-logins">Part 5: User Logins</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-vi-profile-page-and-avatars">Part 6: Profile Page and Avatars</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-vii-unit-testing">Part 7: Unit Testing</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-viii-followers-contacts-and-friends">Part 8: Followers, Contacts, and Friends</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-ix-pagination">Part 9: Pagination</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-x-full-text-search">Part 10: Full Text Search</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-xi-email-support">Part 11: Email Support</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-xii-facelift">Part 12: Facelift</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-xiii-dates-and-times">Part 13: Dates and Times</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-xiv-i18n-and-l10n">Part 14: I18n and L10n</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-xv-ajax">Part 15: Ajax</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-xvi-debugging-testing-and-profiling">Part 16: Debugging, Testing and Profiling</a></li>
<li><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-xvii-deployment-on-linux-even-on-the-raspberry-pi">Part 17: Deployment on Linux</a></li>
<li>
<p><a href="http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-xviii-deployment-on-the-heroku-cloud">Part 18: Deployment on the Heroku Cloud</a></p>
</li>
<li>
<p>If you're looking for a fun introduction to Flask and WebSockets, check out
my blog post on creating
<a href="https://www.twilio.com/blog/2014/11/choose-your-own-adventure-presentations-with-reveal-js-python-and-websockets.html">Choose Your Own Adventure Presentations with Reveal.js, Python and WebSockets</a>.
That post is my favorite technical walkthrough I've written to date. There
is also a companion open source
<a href="https://github.com/makaimc/choose-your-own-adventure-presentations">GitHub repository</a>
for the app with tags for each step in the blog post.</p>
</li>
<li>
<p><a href="https://www.twilio.com/blog/2014/10/branded-mms-coupon-generation-with-python-and-twilio.html">Branded MMS Coupon Generation with Python and Twilio</a>
is a Flask tutorial I wrote for building a web application that can send
branded barcode coupons via MMS. The post goes through every step from
a blank directory until you have a working app that you can deploy to
Heroku.</p>
</li>
<li>
<p><a href="http://blog.john.mayonvolcanosoftware.com/building-a-blog-using-flask-and-angularjs-part-1/">Building a blog using Flask and AngularJS Part 1</a>
is the first of a multipart series on working with Flask and an AngularJS
front end.
<a href="http://blog.john.mayonvolcanosoftware.com/building-a-blog-using-flask-and-angularjs-part-2/">Part 2</a> is also available
<a href="https://github.com/basco-johnkevin/building-a-blog-using-flask-and-angularjs">along with the source code</a>.</p>
</li>
<li>
<p><a href="http://flask.pocoo.org/extensions/">The Flask Extensions Registry</a> is a
curated list of the best packages that extend Flask. It's the first location
to look through when you're wondering how to do something that's not in the
core framework.</p>
</li>
<li>
<p><a href="http://exploreflask.com/">Explore Flask</a> is a public domain book that
was previously backed on Kickstarter and cost money for about a year before
being open sourced. The book explains best practices and patterns for
building Flask apps.</p>
</li>
<li>
<p>Randall Degges wrote a detailed walkthrough for
<a href="https://stormpath.com/blog/build-a-flask-app-in-30-minutes/">building a Flask app in 30 minutes</a>.</p>
</li>
<li>
<p><a href="http://charlesleifer.com/blog/saturday-morning-hacks-building-an-analytics-app-with-flask/">Building an Analytics App with Flask</a>
is a detailed walkthrough for collecting and analyzing webpage
analytics with your own Flask app.</p>
</li>
<li>
<p>Nice post by Jeff Knupp on <a href="http://www.jeffknupp.com/blog/2014/01/29/productionizing-a-flask-application/">Productionizing a Flask App</a>.</p>
</li>
<li>
<p><a href="http://maximebf.com/blog/2012/10/building-websites-in-python-with-flask/#.U06EZ-ZdW4J">Building Websites in Python with Flask</a>
is another walkthrough tutorial from first steps through
<a href="http://maximebf.com/blog/2012/11/getting-bigger-with-flask/">getting bigger with Flask</a>.</p>
</li>
<li>
<p>The Plank & Whittle blog has two posts, one on
<a href="http://www.plankandwhittle.com/packaging-a-flask-web-app/">Packaging a Flask web app</a>
and another on
<a href="http://www.plankandwhittle.com/packaging-a-flask-app-in-a-debian-package/">Packaging a Flask app in a Debian package</a>
once you've built an app and want to deploy it.</p>
</li>
<li>
<p>The Tuts+ <a href="http://code.tutsplus.com/tutorials/an-introduction-to-pythons-flask-framework--net-28822">Flask tutorial</a>
is another great walkthrough for getting started with the framework.</p>
</li>
<li>
<p><a href="http://readwrite.com/2014/07/11/one-click-messaging-app">Create Your Own Obnoxiously Simple Messaging App Just Like Yo</a>
is a silly walkthrough of very basic Flask web application that uses
<a href="https://www.nitrous.io/">Nitrous.io</a> to get started and
<a href="https://www.twilio.com/">Twilio</a> for SMS.</p>
</li>
<li>
<p>The blog post series "Things which aren't magic" covers how Flask's
ubiquitous @app.route decorator works under the covers. There are two
parts in the series,
<a href="http://ains.co/blog/things-which-arent-magic-flask-part-1.html">part 1</a>
and
<a href="http://ains.co/blog/things-which-arent-magic-flask-part-2.html">part 2</a>.</p>
</li>
<li>
<p><a href="http://www.realpython.com/blog/python/flask-by-example-part-1-project-setup/">Flask by Example: Part 1</a>
shows the basic first steps for setting up a Flask project.
<a href="http://www.realpython.com/blog/flask-by-example-part-2-postgres-sqlalchemy-and-alembic/">Part 2</a>
explains how to use PostgreSQL, SQLAlchemy and Alembic.
<a href="https://realpython.com/blog/python/flask-by-example-part-3-text-processing-with-requests-beautifulsoup-nltk/">Part 3</a>
describes text processing with BeautifulSoup and NLTK.
<a href="https://realpython.com/blog/python/flask-by-example-implementing-a-redis-task-queue/">Part 4</a>
shows how to build a task queue with Flask and Redis.</p>
</li>
<li>
<p>Along with the above FLask by Example series, there's also a
<a href="https://github.com/realpython/discover-flask">Discover Flask</a> series of
videos. The GitHub repo contains the code and the 25+ videos are hosted
on YouTube.</p>
</li>
<li>
<p><a href="https://www.digitalocean.com/community/articles/how-to-structure-large-flask-applications">How to Structure Large Flask Applications</a>
covers a subject that comes up quickly once you begin adding significant
functionality to your Flask application.</p>
</li>
<li>
<p><a href="http://blog.miguelgrinberg.com/post/video-streaming-with-flask">Video streaming with Flask</a>
is another fantastic tutorial by Miguel Grinberg that covers video
streaming.</p>
</li>
<li>
<p>"<a href="https://medium.com/@5hreyans/the-one-weird-trick-that-cut-our-flask-page-load-time-by-70-87145335f679">One line of code cut our Flask page load times by 60%</a>
is an important note about optimizing Flask template cache size to
dramatically increase performance in some cases.</p>
</li>
<li>
<p><a href="https://www.twilio.com/blog/2014/03/unit-testing-your-twilio-app-using-pythons-flask-and-nose.html">Unit Testing Your Twilio App Using Python’s Flask and Nose</a>
covers integrating the Twilio API into a Flask application and how to test
that functionality with <a href="https://nose.readthedocs.org/en/latest/">nose</a>.</p>
</li>
<li>
<p>The Flask documentation has some quick examples for how to deploy Flask
with
<a href="http://flask.pocoo.org/docs/deploying/wsgi-standalone/">standalone WSGI containers</a>.</p>
</li>
<li>
<p><a href="https://realpython.com/blog/python/handling-email-confirmation-in-flask/">Handling Email Confirmation in Flask</a>
is a great walkthrough for a common use case of ensuring an email address
matches with the user's login information.</p>
</li>
</ul>
<h2>Open source Flask example projects</h2>
<ul>
<li>
<p><a href="https://github.com/miguelgrinberg/microblog">Microblog</a> is the companion
open source project that goes along with Miguel Grinberg's O'Reilly Flask
book.</p>
</li>
<li>
<p><a href="https://github.com/JackStouffer/Flask-Foundation">Flask Foundation</a> is a
starting point for new Flask projects. There's also a
<a href="https://jackstouffer.github.io/Flask-Foundation/">companion website</a> for
the project that explains what extensions the base project includes.</p>
</li>
<li>
<p><a href="https://github.com/sloria/cookiecutter-flask">Cookiecutter Flask</a> is a project
template for use with <a href="https://github.com/audreyr/cookiecutter">Cookiecutter</a>.</p>
</li>
<li>
<p><a href="https://github.com/mjhea0/flaskr-tdd">Flaskr TDD</a> takes the official Flask
tutorial and adds test driven development and JQuery to the project. </p>
</li>
<li>
<p>Use the <a href="https://github.com/kamalgill/flask-appengine-template">Flask App Engine Template</a>
for getting set up on Google App Engine with Flask.</p>
</li>
<li>
<p>Here is a
<a href="http://charlesleifer.com/blog/saturday-morning-hack-a-little-note-taking-app-with-flask/">note-taking app</a>
along with the
<a href="https://gist.github.com/coleifer/632d3c9aa6b2ea519384">source code in Gists</a>.</p>
</li>
<li>
<p><a href="https://github.com/BouncyNudibranch/bean-counter">Bean Counter</a> is an
open source Flask app for tracking coffee.</p>
</li>
<li>
<p><a href="http://flaskbb.org/">FlaskBB</a> is a Flask app for a discussion forum.</p>
</li>
<li>
<p><a href="https://github.com/Jahaja/psdash">psdash</a> is an app built with Flask and
psutils to display information about the computer it is running on.</p>
</li>
</ul>
<h2>Flask framework learning checklist</h2>
<p><i class="fa fa-check-square-o"></i>
<a href="http://flask.pocoo.org/docs/installation/">Install Flask</a> on
your local development machine.</p>
<p><i class="fa fa-check-square-o"></i>
Work through the 18-part Flask tutorial listed first under "Flask resources"
below.</p>
<p><i class="fa fa-check-square-o"></i>
Read through <a href="http://flask.pocoo.org/extensions/">Flask Extensions Registry</a>
to find out what extensions you'll need to build your project.</p>
<p><i class="fa fa-check-square-o"></i>
Start coding your Flask app based on what you learned from the 18 part
Flask tutorial plus open source example applications found below. </p>
<p><i class="fa fa-check-square-o"></i>
Move on to the <a href="/deployment.html">deployment section</a> to get your initial
Flask project on the web.</p>
<h3>What do you need to learn about web frameworks next?</h3>
<h1>Vim</h1>
<p>Vim, shorthand for Vi IMproved, is a text editor with numerous configuration
options and wide-ranging extensions that can be used to write Python code.</p>
<h2>Why is Vim a good Python development environment?</h2>
<p>Vim's philosophy is that developers are fastest when they never take their
hands off the keys. Even using the mouse is a detriment to the rate at which
your thoughts can flow into code. </p>
<p>Vim has a language behind its commands. When a beginner is learning the
editor she may feel like it is impossible to understand all the key commands.
However, the commands stack together in a logical way so that over time
the editor becomes predictable.</p>
<h2>General Vim resources</h2>
<ul>
<li>
<p><a href="http://yannesposito.com/Scratch/en/blog/Learn-Vim-Progressively/">Learn Vim Progressively</a>
is a wonderful tutorial that follows the path I took when learning Vim:
learn just enough to survive with it as your day-to-day editor then begin
adding more advanced commands on top.</p>
</li>
<li>
<p><a href="http://haridas.in/vim-as-your-ide.html">Vim as Your IDE</a> discusses how to
set up Vim for greater productivity once you learn the initial Vim language
for using the editor.</p>
</li>
<li>
<p><a href="http://benmccormick.org/2014/07/02/learning-vim-in-2014-vim-as-language/">Vim as a Language</a>
explains the language syntax and how you can build up over time to master
the editor.</p>
</li>
</ul>
<h3>What do you want to learn about Python development?</h3>
<h1>Bottle</h1>
<p><a href="http://bottlepy.org/docs/dev/index.html">Bottle</a> is a WSGI-compliant
<a href="https://github.com/defnull/bottle/blob/master/bottle.py">single source file</a>
web framework with no external dependencies except for the standard library
included with Python.</p>
<h2>Bottle resources</h2>
<ul>
<li>
<p>The <a href="http://bottlepy.org/docs/dev/tutorial.html">official Bottle tutorial</a>
provides a thorough view of basic concepts and features for the framework.</p>
</li>
<li>
<p>Digital Ocean provides an extensive <a href="https://www.digitalocean.com/community/articles/how-to-use-the-bottle-micro-framework-to-develop-python-web-apps">introductory post on Bottle</a>.</p>
</li>
<li>
<p>This tutorial provides a walkthrough for
<a href="http://www.giantflyingsaucer.com/blog/?p=3598">getting started with Bottle</a>.</p>
</li>
<li>
<p>Here's a short code snippet for
<a href="http://myadventuresincoding.wordpress.com/2011/01/02/creating-a-rest-api-in-python-using-bottle-and-mongodb/">creating a RESTful API with Bottle and MongoDB</a>.</p>
</li>
<li>
<p>This <a href="http://gotofritz.net/blog/weekly-challenge/restful-python-api-bottle/">tutorial</a>
is another Bottle walkthrough for creating a RESTful web API.</p>
</li>
<li>
<p><a href="http://reachtim.com/articles/BAM-Short-Stack.html">BAM! A Web Framework "Short Stack"</a>
is a walkthrough of using Bottle, Apache and MongoDB to create a web
application.</p>
</li>
<li>
<p><a href="http://gengo.github.io/decanter/">Decanter</a> is a library for structuring
Bottle projects.</p>
</li>
</ul>
<h2>Open source Bottle example projects</h2>
<ul>
<li><a href="https://github.com/thekad/pasttle">Pattle</a> is a pastebin clone built with
Bottle.</li>
</ul>
<h2>Bottle framework learning checklist</h2>
<p><i class="fa fa-check-square-o"></i>
<a href="https://github.com/defnull/bottle/raw/master/bottle.py">Download Bottle</a> or
install via pip with <code>pip install bottle</code> on your local development machine.</p>
<p><i class="fa fa-check-square-o"></i>
Work through the official
<a href="http://bottlepy.org/docs/dev/tutorial.html">Bottle tutorial</a>.</p>
<p><i class="fa fa-check-square-o"></i>
Start coding your Bottle app based on what you learned in the official
tutorial plus reading open source example applications found below. </p>
<p><i class="fa fa-check-square-o"></i>
Move on to the <a href="/deployment.html">deployment section</a> to get your initial
Bottle application on the web.</p>
<h3>What do you need to learn next?</h3>
<h2>Morepath</h2>
<p><a href="http://morepath.readthedocs.org/en/latest/">Morepath</a> is a micro web
framework with a model-driven approach to creating web applications and web
APIs.</p>
<p>Morepath's framework philosophy is that the data models should drive the
creation via the web framework. By default the framework routes URLs directly
to model code, unlike for example Django which requires explicit URL routing
by the developer.</p>
<h2>Why is Morepath an interesting web framework?</h2>
<p>Simple <a href="http://en.wikipedia.org/wiki/Create,_read,_update_and_delete">CRUD web applications and APIs</a>
can be tedious to build when they are driven straight from data models without
much logic between the model and the view. </p>
<p>With the rise of front end JavaScript frameworks, many Python web frameworks
are first being used to build
<a href="/application-programming-interfaces.html">RESTful APIs</a> that return JSON
instead rendering HTML via a templating system. Morepath appears to have
been created with the RESTful API model approach in mind and cuts out the
assumption that templates will drive the user interface.</p>
<h3>Morepath resources</h3>
<ul>
<li>
<p><a href="http://blog.startifact.com/posts/on-the-morepath.html">On the Morepath</a>
is a blog post by Startifact on how they use Morepath and some of the
features of the framework.</p>
</li>
<li>
<p>Morepath's creator gave a
<a href="https://www.youtube.com/watch?v=gyDKMAWPyuY">great talk on the motivation and structure for the new framework</a>
at EuroPython 2014.</p>
</li>
</ul>
<h3>Do you want to learn more about frameworks or web APIs?</h3>
<h1>Other Web Frameworks</h1>
<p>Python has a significant number of web frameworks outside the usual Django,
Flask and Bottle suspects.</p>
<h2>Pyramid</h2>
<p>The <a href="http://www.pylonsproject.org/">Pyramid framework</a> stems from the Pylons
project which develops a set of open source web application frameworks.
Pyramid applications are built using a model-view-controller architecture.</p>
<h2>TurboGears2</h2>
<p><a href="http://www.turbogears.org">TurboGears2</a> born as a full stack layer on top
of Pylons is now a standalone web framework that can act both as a full stack
solution (like Django) or as a micro framework.</p>
<h2>Falcon</h2>
<p><a href="http://falconframework.org/">Falcon</a> is a minimalist web framework designed
with web application speed as a top priority.</p>
<h2>web.py</h2>
<p><a href="http://webpy.org/">web.py</a> is a Python web framework designed for simplicity
in building web applications.</p>
<ul>
<li>See this Reddit discussion on
<a href="http://www.reddit.com/r/Python/comments/2sjghv/is_there_any_reason_to_not_use_webpy/">reasons why to not use web.py</a>
for some insight into the state of the project.</li>
</ul>
<h2>web2py</h2>
<p><a href="http://www.web2py.com/">Web2py</a> is a batteries-included philosophy framework
with project structure based on model-view-controller patterns.</p>
<h2>CherryPy</h2>
<p><a href="http://www.cherrypy.org/">CherryPy</a> is billed as a minimalist web framework,
from the perspective of the amount of code needed to write a web application
using the framework. The project has a
<a href="http://w3techs.com/technologies/details/ws-cherrypy/all/all">long history</a>
and made a major transition between the second and third release. There's an
<a href="https://groups.google.com/forum/#!msg/cherrypy-users/lT1cxovGyy8/JKCPrE51CXIJ">interesting recent discussion</a>
about moving the project forward, especially the number of open outstanding
issues that exist in the tracker.</p>
<h2>Other web framework resources</h2>
<ul>
<li>
<p>This <a href="http://codecondo.com/14-minimal-web-frameworks-for-python/">roundup of 14 minimal Python frameworks</a>
contains both familiar and less known Python libraries.</p>
</li>
<li>
<p>The <a href="http://www.slideshare.net/r1chardj0n3s/web-microframework-battle/">web micro-framework battle</a>
presentation goes over Bottle, Flask, and many other lesser known Python
web frameworks.</p>
</li>
<li>
<p>A Python newcomer asked the Python Subreddit to
<a href="http://www.reddit.com/r/Python/comments/28qr7c/can_anyone_explain_the_differences_between_web2py/">explain the differences between numerous Python web frameworks</a>
and received some interesting responses from other users.</p>
</li>
</ul>
<h2>Other frameworks learning checklist</h2>
<p><i class="fa fa-check-square-o"></i>
Read through the web frameworks listed above and check out their project
websites. </p>
<p><i class="fa fa-check-square-o"></i>
It's useful to know what other web frameworks exist besides Django and Flask.
However, when you're just starting to learn to program there are significantly
more tutorials and resources for <a href="/django.html">Django</a> and
<a href="/flask.html">Flask</a> on the web. My recommendation is to start with one of
those two frameworks then expand your knowledge from there.</p>
<h3>What do you need to learn next?</h3>
<h1>Deployment</h1>
<p>Deployment involves packaging up your web application and putting it in a
production environment that can run the app.</p>
<h2>Why is deployment necessary?</h2>
<p>Your web application must live somewhere other than your own desktop or
laptop. A production environment is the canonical version of your current
application and its associated data.</p>
<h2>Deployment topics map</h2>
<p>Python web application deployments are comprised of many pieces that need to
be individually configured. Here is a map that visually depicts how each
deployment topic relates to each other. Click the image to pull up a PDF
version.</p>
<p><a href="/full-stack-python-map.pdf" target="_blank" style="border: none;"><img src="theme/img/full-stack-python-map.png" width="100%" alt="Full Stack Python site map." class="technical-diagram" /></a></p>
<h2>Deployment hosting options</h2>
<p>There are four options for deploying and hosting a web application:</p>
<ol>
<li>
<p><a href="/servers.html">"Bare metal" servers</a></p>
</li>
<li>
<p><a href="/servers.html">Virtualized servers</a></p>
</li>
<li>
<p><a href="/servers.html">Infrastructure-as-a-service</a></p>
</li>
<li>
<p><a href="/platform-as-a-service.html">Platform-as-a-service</a></p>
</li>
</ol>
<p>The first three options are similar. The deployer needs to provision one or
more servers with a Linux distribution. System packages, a web server,
WSGI server, database and the Python environment are then installed. Finally
the application can be pulled from source and installed in the environment.</p>
<p>Note that there are other ways of installing a Python web application through
system-specific package management systems. We won't cover those in this
guide as they are considered advanced deployment techniques.</p>
<h2>Deployment resources</h2>
<ul>
<li>
<p><a href="http://omniti.com/seeds/thoughts-on-web-application-deployment">Thoughts on web application deployment</a>
walks through stages of deployment with source control, planning,
continuous deployment and monitoring the results.</p>
</li>
<li>
<p><a href="http://blogs.atlassian.com/2014/04/practical-continuous-deployment/">Practical continuous deployment</a>
defines delivery versus deployment and walks through a continuous deployment
workflow.</p>
</li>
<li>
<p>If you're using Flask this
<a href="https://realpython.com/blog/python/kickstarting-flask-on-ubuntu-setup-and-deployment/">detailed post on deploying it to Ubuntu</a>
is a great way to familiarize yourself with the deployment process.</p>
</li>
</ul>
<h2>Deployment learning checklist</h2>
<p><i class="fa fa-check-square-o"></i>
If you're tight on time look at the
<a href="/platform-as-a-service.html">platform-as-a-service (PaaS)</a> options. You can
deploy a low traffic project web app for free or low cost. You won't have to
worry about setting up the operating system and web server compared to going
the traditional server route. In theory you should be able to get your
application live on the web sooner with PaaS hosting.</p>
<p><i class="fa fa-check-square-o"></i>
<a href="/servers.html">Traditional server options</a> are your best bet for learning
how the entire Python web stack works. You'll often save money with a virtual
private server instead of a platform-as-a-service as you scale up.</p>
<p><i class="fa fa-check-square-o"></i>
Read about servers, <a href="/operating-systems.html">operating systems</a>,
<a href="/web-servers.html">web servers</a> and <a href="/wsgi-servers.html">WSGI servers</a> to get
a broad picture of what components need to be set up to run a Python web
application.</p>
<h3>How would you like to deploy your web app?</h3>
<h1>Servers</h1>
<p>Servers are the physical infrastructure to run all the layers of software
so your web application can respond to requests from clients such as web
browsers.</p>
<h2>Why are servers necessary?</h2>
<p>Your web application must live somewhere other than your own desktop or
laptop. Servers should ideally be accessible 24 hours a day, 7 days a week,
with no unplanned downtime. The servers that host your web application for
actual users (as opposed to test users) are known as <em>production</em> servers.