1 00:00:00,200 --> 00:00:03,980 Hey, welcome to the first video where we will start our app. 2 00:00:03,980 --> 00:00:07,310 So let's start the fun with coding in Python. 3 00:00:07,310 --> 00:00:14,630 We'll begin by creating a QR code image, so there are other tools to do that. 4 00:00:14,630 --> 00:00:17,240 But we'll do that with Python because why not? 5 00:00:17,270 --> 00:00:18,320 It's very easy. 6 00:00:18,320 --> 00:00:26,660 So just creates a python project where we will create both the QR image and also the Django app. 7 00:00:26,660 --> 00:00:30,500 So this is my empty project and I'll create. 8 00:00:32,220 --> 00:00:33,840 A keyword.py file. 9 00:00:33,840 --> 00:00:42,150 So this will contain the code which will generate a QR code and that QR code, when scanned with a mobile 10 00:00:42,150 --> 00:00:48,240 device, it will open the URL to our project to create QR codes. 11 00:00:48,240 --> 00:00:49,020 With Python. 12 00:00:49,020 --> 00:00:51,930 You want to use the QR code library. 13 00:00:54,360 --> 00:01:00,780 I just selected my interpreter here because it was not selected by PyCharm by default. 14 00:01:00,780 --> 00:01:04,620 So now Python 3.11 is my python interpreter. 15 00:01:04,980 --> 00:01:07,530 So now I can install QR code. 16 00:01:07,530 --> 00:01:11,010 So open the terminal, make sure that Venv is activated. 17 00:01:11,010 --> 00:01:18,900 You see these parentheses here with Venv inside and then run PIP install QR code. 18 00:01:22,450 --> 00:01:24,220 We also need another library. 19 00:01:24,700 --> 00:01:25,960 It's called Pillow. 20 00:01:26,290 --> 00:01:28,900 This is an image processing library. 21 00:01:29,860 --> 00:01:30,490 Sorry. 22 00:01:30,520 --> 00:01:31,840 Pip install pillow. 23 00:01:32,470 --> 00:01:41,260 This is an image processing library, so QR code needs that library to be able to process the QR code 24 00:01:41,260 --> 00:01:43,720 image even though we don't install it. 25 00:01:43,720 --> 00:01:47,440 It's used on the background by QR code. 26 00:01:47,440 --> 00:01:49,060 So QR codes. 27 00:01:49,060 --> 00:01:59,050 And then you want to create an image with QR codes dot make and here is where you pass the URL which 28 00:01:59,050 --> 00:02:05,980 you want to open when the user scans that generated QR code. 29 00:02:05,980 --> 00:02:15,760 So in our case that would be 127.0.0.1 colon 8000. 30 00:02:15,790 --> 00:02:17,850 Why is it this one? 31 00:02:17,860 --> 00:02:26,050 Because locally when we run our Django project, the app will be accessed on this URL. 32 00:02:26,080 --> 00:02:34,280 Now, when you deploy your app, you want to come back to this piece of code and then just change this 33 00:02:34,280 --> 00:02:38,000 to the actual domain, to the public domain you have. 34 00:02:38,000 --> 00:02:43,550 And then you want to run this code again and you'll get a new QR code that will be the QR code you want 35 00:02:43,550 --> 00:02:45,680 to give to the restaurant, to your client. 36 00:02:45,680 --> 00:02:46,730 So you are the programmer. 37 00:02:46,730 --> 00:02:52,820 Perhaps a restaurant is your client, so you want to give them that QR code so then they can give that 38 00:02:52,820 --> 00:02:55,370 QR code to restaurant customers. 39 00:02:56,480 --> 00:03:01,280 So that will create an image object, but it's just a python object. 40 00:03:01,280 --> 00:03:05,570 It is existing in the python domain. 41 00:03:05,570 --> 00:03:06,650 In the interpreter. 42 00:03:06,650 --> 00:03:11,060 You want to create a file out of that, an image file. 43 00:03:11,060 --> 00:03:17,720 So to do that you want to do image dot save QR dot PNG. 44 00:03:18,050 --> 00:03:20,810 So that will be the name of the file. 45 00:03:20,810 --> 00:03:22,910 Now I can run this code. 46 00:03:24,720 --> 00:03:26,760 And there is the QR code. 47 00:03:26,760 --> 00:03:28,890 So that's an image file. 48 00:03:29,040 --> 00:03:36,390 If you scan it with your mobile phone, it will take you to this URL, right? 49 00:03:36,600 --> 00:03:40,260 That's about creating QR codes in Python. 50 00:03:40,260 --> 00:03:43,710 So with that, we're ready to build our Django app. 51 00:03:43,740 --> 00:03:44,730 I'll see you in the next video.