Python for Entrepreneurs Transcripts
Chapter: Build web apps with Pyramid: Part 1
Lecture: CLI Concepts
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0:01
Let's review the core concepts around using the command line to create a pyramid web application.
0:08
So it all starts with cookiecutter, and we can feed cookiecutter a whole variety of templates, there are a bunch for pyramid
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and other application types as well; we're going to use pyramid cookiecutter starter,
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this is the most straightforward, standard way to create a pyramid web application. There's a few others that bring in sqlalchemy in a certain way
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or zodb or things like that, but this is really the best one for this course because we're going to focus on sqlalchemy later
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and bring that in in a way that makes most sense for what we are doing. Ok, so we're going to use this cookiecutter starter
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and all you need to know is what is the url to the github page. We're going to pip install cookiecutter
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and maybe throw in a -U for upgrade and a --user so you don't modify the overall system, just modify for your user account.
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So we're going to install this, and once it's all installed, we'll be able to run cookiecutter commands. So we're going to run cookiecutter
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and we're going to give it that url from the git hub repository that contains the project template like this,
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and once it runs, it's going to ask us a bunch of questions like what do you want to call the project,
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this is like the friendly name you show to the user, what's the repo name, this is the actual Python package name
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and make sure that you pick Chameleon for your template type here, okay. After that, we're going to have our project generated,
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and it says you can do a couple of things which we will more or less do, we're going to change into the project directory,
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we're going to create a virtual environment, remember I called it .env, not env, and I added a --copies flag for PyCharm plus mac interaction,
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we also probably want to as soon as we get that activated, we want to install the newest tools,
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I don't think that's shown actually here in the steps— no, it's not so we'll say .env/bin/activate, or .env/scripts/activate.bat on Windows,
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and then we'll come down here and we'll upgrade our setup tools to the latest version;
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remember setup tools itself is actually quite out of date for some reason, and then we're ready to run our app,
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we just say pserve development.ini, and everything goes. Now before we can actually run our project,
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we're going to need to register the website as a package in our virtual environment, so we'll say Python setup.py develop
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and it's going to download all the dependencies as well as register our actual web application as a package basically.
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And the develop we'll say look back here symbolically rather than linking over to copying those files over
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that means we just continue to edit these files and Python just picks it up. So that's exactly what we want.
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And then we're ready to run our app, so we just come down here, pserve development.ini and it should just run like this.
3:03
So here you can see running on local host on the particular port, it might seem weird that it's listed twice,
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but that one is an ipv4 listing and another as an ipv6, even though it says local host in both, it's really one is ipv4 one is ipv6.
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Take this url, open it up in your browser and boom you now have pyramid running in your browser, it's ready to go,
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the only thing left— let's start adding features and making it your website.