Python Jumpstart by Building 10 Apps Transcripts
Chapter: App 10: Movie Search App
Lecture: Adding search to the app
0:00 Now, it's fun to play around and sort of explore the api,
0:03 but let's build something that's a little bit more formal,
0:05 a little bit more of a proper app,
0:08 and instead of having you watch me type it all out,
0:10 I kind of put it together and we'll just go over the skeleton bit of it,
0:12 and then we'll actually make it work here next.
0:15 So, we have this main method, and it's going to do two things
0:18 it's going to print out the header and you can imagine
0:21 that just prints out movie search app, nothing major there,
0:24 and then it runs this search event loop here,
0:26 and we're using our dunder main convention;
0:28 so down here it's just going to say go through this while loop,
0:32 and long as you don't press x, it's going to let you keep searching,
0:36 so press x to exit, but if you don't press that, it's going to go do a search, right,
0:40 we'll go down here, and we're going to run this little search,
0:43 so we'll go to this thing that I've created called a movie service,
0:45 and we will call the find movies function,
0:48 and then this is exactly the same thing we did before,
0:51 just printing out the year and title, and if you do hit x
0:53 it gives you this little message like see you.
0:56 Let's look at the movie search,
0:58 really I just moved the stuff that was in a play around function
1:00 over here and put it into a function we can call,
1:02 so we've got our movie, result, name tuple, exactly like before,
1:06 we've got our url, now we're passing in the search text,
1:09 and we're calling requests, checking for the errors
1:14 to make sure everything's ok to carry on, converting to json,
1:16 getting the movie list, doing our cool list comprehension here,
1:18 with our dictionary unpacking thing there, and then we're returning them.
1:23 I guess one more thing that might be fun,
1:26 let's run this real quick just to see that it basically works the same,
1:29 except for now it goes in a loop, so we could search for let's say 'cats',
1:32 we get a bunch of cats, we could search for 'runner' we get runner, and so on
1:36 but notice, the years are just kind of random,
1:39 whatever order it comes back from the service,
1:42 suppose that we would like instead to see the newest movies first,
1:47 so let's go ahead and upgrade this, we'll same movies.sort
1:50 and here we're going to sort, we're going to say key = lambda
1:54 given a movie say m, how are we going to sort it,
1:59 we could say sort by m.year, and that would show oldest to newest
2:03 let's try that, 'runner', see Logan's Run for 76, then Blade Runner,
2:09 now it's sorted, that's great, but not what we were hoping.
2:12 We can sort for numerical values, which this is a number luckily,
2:15 we can sort from numerical values and reverse this by reversing the key,
2:19 so put a negative there, now if I search 'runner'
2:22 then we get 2014, 2013, and so on,
2:27 I installed little programs, every time we restart it,
2:30 PyCharm is creating another one,
2:32 let's get rid of these, and we can fix that real quick.
2:35 We'll go up here, it's just single instance only, now it's going to restart it,
2:39 so if I run it again, it will say I'm going to restart this, it's fine.
2:42 Great, so it looks like this is working,
2:46 we have our skeleton of our app going,
2:50 and now we've moved this finding movies capability over here
2:52 to this movie service and our program is just using it here.
2:56 So it looks like everything's great, but it turns out
3:00 things on the internet can break, so let's go explore that next.