1 00:00:00,630 --> 00:00:04,650 Hey, in the previous video, we built this guy, which has three widgets. 2 00:00:04,860 --> 00:00:07,400 This one here, this one here and this one here. 3 00:00:07,410 --> 00:00:10,170 So this was the front end, basically. 4 00:00:10,440 --> 00:00:13,170 Now we're ready to build the back end. 5 00:00:14,420 --> 00:00:19,370 So the front end was built by this class class chat bot to window write. 6 00:00:19,370 --> 00:00:21,170 We wrote this class in the previous video. 7 00:00:21,170 --> 00:00:22,210 Let me fold it. 8 00:00:22,220 --> 00:00:24,260 I'm not deleting it, just folding it. 9 00:00:24,800 --> 00:00:28,550 So I have a better view here in the script. 10 00:00:28,850 --> 00:00:32,870 Now the back end will be in this class. 11 00:00:33,080 --> 00:00:38,030 And before we begin, I think it makes sense that we refactor this class. 12 00:00:38,030 --> 00:00:39,350 Or right click here. 13 00:00:39,350 --> 00:00:45,560 I'll select the class, right click, go to refactor and then go to move. 14 00:00:46,460 --> 00:00:51,080 So I want to move this class to Bec and that PE basically. 15 00:00:53,400 --> 00:00:54,450 Add to it. 16 00:00:54,960 --> 00:00:58,140 So what I've just done is I deleted the class from here. 17 00:00:58,140 --> 00:01:01,080 You could do that manually as well, if you like. 18 00:01:01,920 --> 00:01:08,160 So if you do it manually, you would have to delete the class from here or cut it and paste it in this 19 00:01:08,160 --> 00:01:09,480 new file back. 20 00:01:09,480 --> 00:01:11,670 And that's P right. 21 00:01:12,640 --> 00:01:13,810 Well, that's what I did. 22 00:01:14,050 --> 00:01:18,230 So I use the refactor function in part to do this. 23 00:01:18,250 --> 00:01:22,690 This makes more sense because this is the code that builds the gooey. 24 00:01:22,750 --> 00:01:24,670 And this does the processing. 25 00:01:24,670 --> 00:01:27,070 So it makes sense to have them separate. 26 00:01:27,190 --> 00:01:33,130 So in this code now, we want to interact with the Open I API. 27 00:01:34,060 --> 00:01:40,000 The interaction happens with the Open I library, which is something you need to install. 28 00:01:40,000 --> 00:01:42,220 So install open eye. 29 00:01:42,520 --> 00:01:46,300 Once this is installed, then you need an API key. 30 00:01:47,650 --> 00:01:55,960 So for that you need to go to google, search for open ie API and you should go to open i dot com slash 31 00:01:55,960 --> 00:01:56,650 API. 32 00:01:58,210 --> 00:02:05,020 So this is the official website of Open AI, an organization that develops AI tools. 33 00:02:05,050 --> 00:02:07,750 So, Chad, Djibouti is one of those tools. 34 00:02:07,750 --> 00:02:13,540 And we will use The Da Vinci three model, which is a very advanced algorithm, and it's very similar 35 00:02:13,540 --> 00:02:15,640 to the Chad Djibouti algorithm. 36 00:02:16,000 --> 00:02:19,780 To be able to use the API, you need to sign up first for an account. 37 00:02:19,780 --> 00:02:23,800 It's free, and then go to log in to log in to that account. 38 00:02:24,370 --> 00:02:27,850 And so once you log in, you should see this page. 39 00:02:27,850 --> 00:02:31,390 So this is a platform that open A.I. dot com. 40 00:02:32,470 --> 00:02:34,840 So that's the overview page. 41 00:02:34,840 --> 00:02:39,580 And now you need to get the API for the chat bots. 42 00:02:39,580 --> 00:02:44,130 So you want to go to this personal and then you're going to go to view API keys. 43 00:02:44,140 --> 00:02:51,310 Here you'll see a list of API keys you have created and to create a new one, you go to create a new 44 00:02:51,310 --> 00:02:53,680 secret key and copy that. 45 00:02:54,100 --> 00:02:56,020 So that's your new key. 46 00:02:56,020 --> 00:03:07,600 Go to Python and then create a define init methods and to open AI dot. 47 00:03:08,670 --> 00:03:15,270 API underscore key is equal to to double quotes and paste the API key there. 48 00:03:15,480 --> 00:03:22,350 So open AI is the module we imported and API key is an attribute of that module. 49 00:03:22,350 --> 00:03:25,290 So we declare the API key in here. 50 00:03:26,070 --> 00:03:28,620 That's all we have to do in the init function. 51 00:03:28,620 --> 00:03:37,140 Then we want to create a GetResponse method which will be responsible for getting a response from the 52 00:03:37,140 --> 00:03:37,920 API. 53 00:03:38,700 --> 00:03:41,430 So let's create a response variable. 54 00:03:42,930 --> 00:03:53,550 To get a response, we'll do open AI, dot completion, dot create and inside this parentheses. 55 00:03:53,550 --> 00:04:00,120 Now this will be a long list of parameters that this create method gets. 56 00:04:01,140 --> 00:04:04,450 The first argument is the engine. 57 00:04:04,470 --> 00:04:06,420 This comes as a string. 58 00:04:08,310 --> 00:04:12,690 And this is the AI model we will use. 59 00:04:13,620 --> 00:04:15,030 Text Da Vinci. 60 00:04:15,920 --> 00:04:17,149 003. 61 00:04:17,149 --> 00:04:21,560 So text minus the Vinci, -0 zero three, a comma. 62 00:04:23,380 --> 00:04:26,180 Prompt is the second argument. 63 00:04:26,200 --> 00:04:27,910 This will be the user input. 64 00:04:29,970 --> 00:04:30,390 Right. 65 00:04:30,540 --> 00:04:37,350 And let's have this here as a parameter user input. 66 00:04:38,190 --> 00:04:48,000 So our other class, this class will call this chat bot class and the user will enter something in the 67 00:04:48,000 --> 00:04:51,930 text input field here in this class. 68 00:04:51,960 --> 00:04:52,690 Right? 69 00:04:52,710 --> 00:05:00,090 So the user will enter something in here and that string is going to be sent to this method. 70 00:05:00,570 --> 00:05:08,580 So similar in this code here in our guy, we will call this get response method method by providing 71 00:05:08,580 --> 00:05:12,930 the user string as the value of the user input variable. 72 00:05:12,930 --> 00:05:16,410 And so that value will be sent in the prompt. 73 00:05:18,030 --> 00:05:19,050 Then we need to. 74 00:05:21,250 --> 00:05:25,890 Provide a max tokens arguments set it to 4000. 75 00:05:25,900 --> 00:05:26,700 What is this? 76 00:05:26,710 --> 00:05:37,000 Well, if you want the bot to provide longer answers, you can set a maximum of 4080 tokens or tokens 77 00:05:37,000 --> 00:05:37,990 are words. 78 00:05:38,350 --> 00:05:43,750 So this means that the boat cannot provide more than 40 tokens. 79 00:05:44,170 --> 00:05:49,470 If you want to provide shorter answers, perhaps you can set it to 2000. 80 00:05:49,480 --> 00:05:52,390 So I would go for 3000. 81 00:05:52,420 --> 00:05:54,940 That would be a good value comma. 82 00:05:54,940 --> 00:06:00,550 And lastly, the temperature, I'll suggest a value of 0.5. 83 00:06:00,550 --> 00:06:04,900 You can set the value from 0 to 1 if you are closer to zero. 84 00:06:04,900 --> 00:06:12,190 So if you are giving a low temperature, that will produce more accurate answers, but they will be 85 00:06:12,190 --> 00:06:13,810 less diverse. 86 00:06:14,050 --> 00:06:22,000 So more rigid, if you provide a higher temperature, you will sacrifice a bit on accuracy, but the 87 00:06:22,000 --> 00:06:25,510 answers will be more diverse, if that makes sense. 88 00:06:25,810 --> 00:06:28,540 So 0.5 is a good value to have. 89 00:06:30,710 --> 00:06:33,570 So that's the create methods. 90 00:06:33,590 --> 00:06:34,850 It opens in here. 91 00:06:34,850 --> 00:06:35,960 It closes in here. 92 00:06:35,960 --> 00:06:40,290 And then after this, you need to extract the choices. 93 00:06:40,310 --> 00:06:41,560 This will give you a list. 94 00:06:41,570 --> 00:06:47,840 You get the first item of that list, and you extract the text out of that the text property and then 95 00:06:47,840 --> 00:06:49,850 return the response. 96 00:06:50,210 --> 00:06:51,050 And that's it. 97 00:06:51,050 --> 00:06:52,550 That's the complete class. 98 00:06:52,550 --> 00:06:54,020 So let's try it now. 99 00:06:54,290 --> 00:06:55,490 I'll go and do. 100 00:06:55,490 --> 00:07:06,050 If name is equal to main, instantiate the chat bot. 101 00:07:06,080 --> 00:07:09,410 It doesn't take any arguments, so just parentheses there. 102 00:07:11,360 --> 00:07:13,730 The response will be equal to chat bots. 103 00:07:13,730 --> 00:07:21,650 Dot get re spawns and get response will get an argument that is the user inputs. 104 00:07:21,650 --> 00:07:30,920 So for example, write a joke about birds and I'll print out the response here. 105 00:07:33,260 --> 00:07:41,990 Of course later on it is the chat bot window which will call this chat bot class and it will call that 106 00:07:41,990 --> 00:07:43,220 gets response methods. 107 00:07:43,220 --> 00:07:48,350 But for now, let's keep it here so we make sure that our chat bot class is working fine. 108 00:07:49,250 --> 00:07:52,640 So I just ran this backends py file. 109 00:07:52,940 --> 00:07:54,350 I've got an attribute error. 110 00:07:54,350 --> 00:07:56,420 Attribute error choice. 111 00:07:56,420 --> 00:08:01,010 So choice is not an attribute of its object. 112 00:08:01,010 --> 00:08:02,720 So actually it's choices. 113 00:08:03,830 --> 00:08:05,150 So let's run again. 114 00:08:06,950 --> 00:08:07,540 There we go. 115 00:08:07,550 --> 00:08:10,400 That's the response of the chat board. 116 00:08:12,020 --> 00:08:15,700 So the chat bot gave a joke in the form of a Q&A. 117 00:08:15,710 --> 00:08:19,910 So there's a question, Oh, what did the bird say when it flew into the world? 118 00:08:20,870 --> 00:08:23,320 Oh, I shouldn't have flown straight. 119 00:08:23,330 --> 00:08:24,430 That's the joke. 120 00:08:24,440 --> 00:08:26,060 So it seems to be working fine. 121 00:08:29,720 --> 00:08:33,230 That's how you create a chat bot with open AI. 122 00:08:33,890 --> 00:08:41,659 In the next video, we'll go ahead and connect this backend file with the main dot p file, So we connect 123 00:08:41,659 --> 00:08:48,560 the chat bot with the chat bot window so that our chat bot window will function like a real chat bot. 124 00:08:48,890 --> 00:08:49,490 Thanks. 125 00:08:49,490 --> 00:08:50,570 I'll see you in the next video.