5.txt

00:00 So it's time to get started writing our search app
00:02 that's going to talk to the movie search API.
00:05 Now over here in our repository,
00:06 I've got Day 10 to 12 selected
00:09 and I've opened up the terminal here.
00:12 We want to open this in PyCharm.
00:14 You don't have to use PyCharm,
00:16 but I'm going to open in in PyCharm.
00:17 I'm going to go through a couple of steps.
00:19 Whenever you depend upon external packages,
00:21 it's a good idea to have a virtual environment.
00:24 In order to create one of those over here,
00:25 let's call this app, let's make a folder really quick.
00:30 So call this Movie Search.
00:32 And go in here.
00:33 Then, I'm going to create a virtual environment here.
00:37 If we call it .env or venv,
00:40 then PyCharm will automatically detect it and use it,
00:42 so might as well call it that.
00:45 Now open this in PyCharm,
00:46 can't seen anything because dot creates hidden files on Mac
00:49 and Linux, but we're going to open this
00:52 on Mac and Linux, you have to say file, open, directory
00:56 and Mac, you can just drop it here.
00:59 Let's go ahead and tell PyCharm about about git,
01:02 so everything I create is going to be put
01:04 into the git repository for you.
01:06 And that'll be a little easier here,
01:08 go ahead and also tell it to ignore this directory.
01:12 Maybe someday it'll do that on it's own.
01:13 Now I want to create two files,
01:15 I don't like to cram everything into one Python file.
01:19 When I'm creating an application
01:20 I want to partition it into pieces so let's go over here
01:23 and create two things.
01:24 We're going to create a program
01:26 and we're going to create an API.
01:31 And go ahead and tell PyCharm it can add stuff to git.
01:34 Okay so what we're going to do
01:35 is we're going to write the code to access the service
01:38 in the API file and we're going to work with it
01:41 from the user interaction perspective
01:43 and orchestrate it from over here.
01:45 So let's define a quick method over here, main.
01:48 And we'll just have pass.
01:50 Now we want to follow the convention for running this program
01:54 if and only if it's the target of execution.
01:57 And in PyCharm, the way that,
01:58 or, in Python, the way that you do that
02:00 is you use this if dunder name equals dunder main,
02:03 then that means it's supposed to run
02:05 and I'll just call this method here.
02:09 This is a little bit set up and ready to go.
02:11 We're going to use something over in the API
02:14 so we're going to create a method here
02:16 that's going to take a string
02:18 and it's going to return some search results.
02:19 So create.
02:21 And say find movie by title, let's say,
02:25 because that's what we're actually searching for here.
02:27 And the keyword, and it's going to do some stuff
02:31 and return some movies, that's going to be great.
02:33 How do we do that?
02:34 Well first we have to work with requests.
02:36 So we'll come over here and say import requests.
02:38 Now let me go ahead and run this,
02:41 it's not going to work out so well,
02:43 we're going to right click and create a run configuration
02:45 in PyCharm, or you just type Python 3, you know,
02:48 program.py.
02:51 That didn't actually import it so nothing actually happened.
02:53 But let's do, if we come over here and say import api
02:56 as we're going to need to, now we try that again, boom,
03:00 there is no requests. So of course we have to install requests.
03:03 Now if you look in our terminal,
03:05 notice we have the virtual environment activated here,
03:08 so we could say, see what's in there.
03:11 And there's nothing really in there.
03:14 So one of the conventions people like to follow
03:16 is when they have dependencies
03:19 they'll have a file called requirements.txt.
03:23 And in there, they'll put library names like requests.
03:27 requests, like this.
03:29 And notice, PyCharm already knows,
03:31 hey, you need to say pip install requests,
03:33 or you can just click this and that'll do it for you.
03:37 If you wait for a second down here
03:38 and then we do the pip list again,
03:39 there should be more stuff including requests,
03:42 our program should now run.
03:44 Ta-dah, okay.
03:45 So we have just the basic structure of this thing
03:47 hanging together, right?
03:49 We've installed requests, we've created the program,
03:52 and the api separation, we've got our requirements,
03:54 and it's all kind of hanging together.
03:57 Next up, we actually have to write
03:59 our method here, about how we find movies.