Building Data-Driven Web Apps with Flask and SQLAlchemy Transcripts
Chapter: Setup
Lecture: Do you have Python 3? How do you get it?
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Now we're almost ready to start writing some code and talking about this framework. But before we do, let's just make sure
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everyone's on a level playing field there's a couple things I want to share with you a couple things I want to give you
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and I also want to make sure you have what you need to take this course. So the first thing I'm going to start with
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is what version of Python do you need? Well, of course, we're on modern Python that in my mind I guess is probably like Python 3.5 and above.
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But you're actually going to need Python 3.6 'cause I believe we use some f-strings. f-strings are a new way to format strings in Python
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which are great. Also it has async/await which came in 3.5 but I believe some of the features that were added are also required a little bit later.
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So let's just say 3.6 or later maybe even 3.7. Newer is better. You have to have Python installed and it has to be Python 3.5 at an absolute minimum.
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Could be higher still. You may wonder, "Well, that's great Michael I really want to have Python installed. But do I on this particular machine?"
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I don't know. Well, you can always ask you can go to you're terminal in macOS or Linux and type Python3 -V and it'll tell you one or two things.
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Either the version number or you know Python3 not found. If Python3 not found that means it's either not installed or just not in your path.
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But here you can see I got Python 3.7.2 That's almost the latest just the day I started pressing record here 3.7.3 came out pretty much same.
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On Windows, Python3 -V sometimes works and you can get 3.7.2. Depending on how you've installed Python you might have to type just Python -V
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without the 3 and see what you get. And especially on Windows because you until recently could not target the version by the executable name
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you have to make sure your path is just right. So you can type where Python on Windows I think in which Python on Mac and Linux.
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If that's wrong you can switch it. It's either which or where to show you where it's come from.
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And if there's more, it'll show you which is in the path and where you know which one comes first in the path and so on.
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So if you have a new enough version of Python. Super! Let's rock and roll. If you don't refer you over to realPython.com/installing-Python
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these guys have a really nice set of steps on given this OS; here's how you get Python there here's the trade offs and so on.
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And they're keeping it nice and up to date. So instead of showing you how to install and maybe you know, six months or some other way
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like Windows 10 now just offered Python 3.7 in the store. Which is a better way than maybe get it on Python.org for example.
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So you can check out what they've got here. This is pretty helpful. And of course you know, get modern Python all set up
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if you don't have it and let's roll.