Transcripts for the course.

Author: mikeckennedy

transcripts/ch01-welcome-to-the-course/1.txt

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+00:00 Hello and welcome to Data Driven Web Apps in Pyramid.
+00:04 In this course, we are going to take the Pyramid web framework
+00:07 which is a Python-based web framework
+00:10 and we're going to build some amazing
+00:12 data driven web applications.
+00:14 We're going to use Bootstrap which is one
+00:16 of the most popular CSS front end design frameworks
+00:19 to make our web app we build in Python look great.
+00:23 Of course, almost all web applications access databases.
+00:27 At least the dynamic ones do.
+00:29 And we're going to use the most popular
+00:30 and powerful Python-based ORM called SQLAlchemy
+00:34 to write Python classes and map those to our database.
+00:39 Welcome, welcome, welcome
+00:40 to Data Driven Web Apps in Pyramid.
+00:43 We're going to have a great time building
+00:45 some real world applications and learning
+00:47 some real world ways to put them into production.

transcripts/ch01-welcome-to-the-course/2.txt

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+00:00 Before we dig into all the code that we're going to write
+00:02 and the technologies we're going to use
+00:04 and the types of things we can even build
+00:06 let's just take a moment and admire the
+00:08 incredible power of the web.
+00:10 The web is one of the most flexible
+00:12 and certainly the most widely deployed
+00:14 and used technology out there.
+00:17 Think about YouTube.
+00:19 YouTube is an amazing web application.
+00:22 It really has brought video sharing to the entire world.
+00:26 It also happens to be a Python-based web app
+00:29 and handles millions of requests per second.
+00:32 Think about Airbnb.
+00:34 With this web application, and a unique sharing philosophy
+00:38 they've literally transformed the way people travel
+00:41 and stay in cities.
+00:43 Netflix uses their web app to redefine
+00:46 TV for many, many people.
+00:49 In fact, this web app and their infrastructure
+00:51 account for 35% of the bandwidth
+00:54 of the United States in the evening.
+00:56 That's pretty incredible.
+00:58 Hey, let's throw one more in.
+00:59 You're taking an amazing course
+01:01 and you're going to be learning all about building web apps.
+01:04 Here's another one, Talk Python Training.
+01:06 This site is built, of course, on Python and Pyramid
+01:09 and has taught a ton of people about Python.
+01:12 In fact, many of the techniques and the lessons
+01:15 learned in building this site
+01:17 along with some of the others
+01:18 I'm going to bring into this course.
+01:21 So it's not just about looking out there
+01:22 and seeing some incredible web apps built
+01:24 it's also taking a pretty amazing web app
+01:27 that I have built
+01:28 and taking the lessons and techniques from that
+01:30 and sharing them with you with Pyramid
+01:32 SQLAlchemy, and so on.
+01:35 Do you have an idea?
+01:36 Something you want to build for everyone?
+01:37 Well, the techniques and technology you're about to learn
+01:40 will let you unleash this incredible power of the web
+01:44 to bring your idea to life.

transcripts/ch01-welcome-to-the-course/3.txt

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+00:00 In this course, you're going to learn
+00:01 what's sometimes referred to as full-stack web development.
+00:05 Now, we don't spend that much time
+00:07 on the JavaScript side of things
+00:09 but everything else we do spend a fair amount of time on.
+00:11 So, what the heck is full-stack anyway?
+00:14 Let's look at all the pieces involved
+00:16 in a typical web application interaction.  We have a browser
+00:20 we have our server running out on some cloud hosting
+00:23 we have usually a virtual machine
+00:25 or set of virtual machines in the background
+00:27 and our database we're working with.
+00:29 So, a request is going to come in.
+00:30 It's going to magically find it's way
+00:33 through the internet to our server.
+00:34 Our server is going to do some processing
+00:37 talk to the database, and so on.
+00:40 Where's the full-stack part come in?
+00:41 Well, let's look at the technologies involved here.
+00:45 On the server side
+00:47 there are a bunch of different technologies
+00:48 you need to learn.
+00:50 We're going to learn Python.
+00:51 Well, we're going to use Python at least
+00:53 and we'll probably learn little bits of it along the way
+00:55 but we're going to focus on using Python
+00:58 along with Pyramid
+01:00 the web framework that we're going to work with.
+01:02 The dynamic HTML templates
+01:05 in this case Chameleon.
+01:07 The data access layer SQLAlchemy.
+01:10 In order to deploy and configure our servers
+01:12 we're going to need to know a little bit of Linux.
+01:14 Learn that.
+01:15 We're going to use Nginx and uWSGI.
+01:18 These are two cooperating web servers
+01:20 that we're going to with to run our Python code in Pyramid.
+01:24 Then we're going to talk to the database.
+01:26 Well, what do you need to know for that?
+01:27 Well, maybe this is Postgres or MongoDB.
+01:31 For the course, we're actually going to use SQLite
+01:33 and also a little bit of touch of MongoDB at the end
+01:36 but it's easier to switch to something like Postgres.
+01:39 You many need to know the query language to get to that
+01:43 like SQL, or MongoDB's query syntax
+01:46 it's like a JSON type thing.
+01:48 We're not going to actually focus much on the query syntax
+01:52 because we're going to use SQLAlchemy
+01:53 which lets us sort of abstract that away
+01:56 but you would more or less need to know that in practice.
+01:59 You also need to know how to migrate or manage your database
+02:03 over time as it's structure changes.
+02:05 Look at all these technologies just on the server side.
+02:08 That's a lot to learn
+02:09 and this whole stack of technologies put together
+02:13 is part of what's called full-stack
+02:14 but there's more to it.
+02:16 Over here on the browser side
+02:18 we have HTML and CSS we have to deliver
+02:21 to the browser, right?
+02:22 That's ultimately the goal
+02:23 is to show stuff on the screen for the web browser.
+02:27 HTML and CSS, we're going to do some work with that.
+02:29 You typically don't want to do the design from scratch
+02:32 so you'll pick a front-end framework like Bootstrap.
+02:35 Maybe you're even writing some rich JavaScript apps
+02:37 with say, Vue.js.
+02:39 Those are grayed out, because like I said
+02:41 we're not doing much with JavaScript
+02:42 but these are the technologies that you might put
+02:45 into play for a full-stack web application.
+02:49 The web can be a little bit daunting.
+02:50 We're going to go through most of these technologies.
+02:53 All of the white highlighted ones in this course
+02:56 and you'll have concrete small examples for each one.
+03:00 In the end, we'll have it all put together in a full-stack
+03:03 Python-based web app using Pyramid
+03:06 SQLAlchemy, and Bootstrap.

transcripts/ch01-welcome-to-the-course/4.txt

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+00:00 This is not an introduction to Python course.
+00:03 We do assume a little bit of working knowledge.
+00:06 We assume that you have basic Python programming skills.
+00:10 I would say if you're, what you might consider
+00:12 an advanced beginner, you're totally
+00:15 good to take this course.
+00:17 We're going to use things like classes
+00:18 and decorators and functions and so on
+00:21 but we're not going to describe what a class is
+00:24 or describe what a function is or things like that.
+00:26 So make sure you have some basic working knowledge
+00:29 of Python in order to take this course.
+00:31 If you don't, consider taking my Python
+00:33 Jumpstart by Building 10 Apps course.
+00:35 That's all about learning Python.
+00:38 So here we assume that you know Python.
+00:40 We also assume that you know a little bit of HTML.
+00:43 That if you look at HTML, at least you can make sense of it
+00:45 you know what, say, an attribute is
+00:48 what a class is, things like that.
+00:50 We're not going to be doing too much advanced stuff with HTML.
+00:54 I'm not sure if there is such thing as advanced HTML
+00:56 but we're not going to be doing too much with it
+00:59 but of course, this is a web class
+01:01 and we're going to be doing a lot of HTML
+01:03 but I assume that you can work with standard markup.
+01:07 Similarly, we're going to be using CSS
+01:09 and I'll talk a lot about what the selectors
+01:11 and classes and design mean, and especially
+01:14 when we get to the bootstraps section
+01:15 and applying that to our website.
+01:17 So we're not going to assume you know tons of it
+01:20 but we're not starting from scratch with CSS either.
+01:23 So basic HTML, CSS, and Python knowledge
+01:26 that's what we assume you're starting with
+01:28 and then we're going to build
+01:30 our full-stack web app from there.

transcripts/ch01-welcome-to-the-course/5.txt

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+00:00 When we talked about the incredible power
+00:01 of the web, we saw some amazing web apps built.
+00:04 Only some of them were built with Python.
+00:06 Let's look at a whole bunch of other apps
+00:08 web apps, built with Python.
+00:10 I think it's always great to have some examples.
+00:12 You know, maybe you're trying to convince your team
+00:14 or your boss, or something like that.
+00:16 "Hey, we should build this particular app we're trying
+00:18 to launch in Python and here are five examples
+00:21 of other apps that are similar, that are amazing."
+00:23 So let's go through a quick list
+00:24 to give you some ammunition.
+00:27 You might be familiar with The Onion.
+00:29 This is a fake news comedy site that's hilarious.
+00:33 They post all sorts of crazy, outrageous news items
+00:36 and that, of course, is built on Python.
+00:39 Spotify, the music streaming service, their web app, Python.
+00:43 NASA and JPL make heavy use of Python
+00:46 for all their awesome space stuff.
+00:49 Bitly, the URL shortening site that gets tons of traffic
+00:54 does all sorts of analytics and stuff
+00:56 around the URLs they shorten, Python.
+00:59 Bitbucket, SurveyMonkey, Quora
+01:03 what I think one of the very best online Q&A forums for
+01:07 thoughtful, somewhat deep answers.
+01:10 Not always great but pretty good, built with Python.
+01:13 They're actually pretty enthusiastic users of Python.
+01:15 If you look at their engineering blog
+01:17 they often write about how they use and configure
+01:20 and optimize Python for what they're doing.
+01:22 Disqus the comment section that you can embed
+01:25 into any web application.
+01:27 If you go to either of my podcast sites, talkpython.fm
+01:29 or pythonbytes.fm, you'll see at the bottom
+01:31 this little Disqus section.
+01:33 That is built with Python.
+01:35 Many of their services are based on Python.
+01:36 Instagram, an incredible amount of traffic goes
+01:39 to Instagram, and they make heavy use and, again
+01:41 are very passionate users of Python
+01:43 and their engineering blog covers a lot of cool things
+01:45 like how they disabled garbage collection, for example
+01:49 to make their web apps run much faster.
+01:52 Reddit, the front page of the internet, as some say
+01:55 gets tons of traffic, I think it's in
+01:57 the top ten websites on the internet
+01:59 built with Python and SQLAlchemy.
+02:02 Youtube, we already talked about that.
+02:03 Youtube is amazing, they get millions of requests
+02:06 per second and are based on Python.
+02:08 The brand new relaunched PyPI, the Python Package Index
+02:12 at pypi.org, is built with Python and Pyramid.
+02:17 They get tons and tons of traffic
+02:18 and they actually tried Flask, they tried Django
+02:21 and they tried Pyramid and they decided Pyramid was
+02:23 the best choice for what they were building.
+02:26 Pinterest, also built on Python.
+02:29 Paypal has some of their pricing services written
+02:33 in Python, and these pricing services are called
+02:35 by different parts of Paypal's infrastructure
+02:38 and other services and websites to figure out
+02:40 what the exchange rate is, what the fee is
+02:43 that goes along with various transactions and so on.
+02:45 That has two to three billion requests per day
+02:49 written in Python with sub-millisecond
+02:52 maybe just single millisecond response time.
+02:54 It's pretty incredible.
+02:56 Dropbox is a heavy user of Python, the client you get
+02:59 on your machine, as well as much of
+03:02 their backing services, Python.
+03:03 In fact, Guido van Rossum, the guy
+03:05 who created Python, works there
+03:07 at least at the time of this recording
+03:09 so you can bet that it's a real
+03:10 center of the universe around Python.
+03:13 And, last but not least, Talk Python.
+03:16 All the Talk Python stuff, the training site
+03:18 the podcast site, all that stuff is based
+03:20 on Pyramid and Python.
+03:21 It's been working out amazing.
+03:23 We get incredible, high-performance web apps
+03:26 that are easy to maintain.
+03:28 We'll share a lot of the lessons
+03:29 from that experience in this course.
+03:32 Want to read more about all of these
+03:33 how these companies are using Python?
+03:35 Well, how about we use a little Python to get there.
+03:37 Bitly/pyapp-25, that'll take you over
+03:41 to an article where I pulled a lot of this stuff together
+03:43 with more background info than I put in here.