WEBVTT 00:01.240 --> 00:01.640 Okay. 00:01.640 --> 00:03.480 Right here in the define. 00:03.680 --> 00:06.600 In the define the function of report. 00:06.600 --> 00:08.360 You see we are printing the log. 00:08.640 --> 00:12.960 Now instead of printing these log right here. 00:13.000 --> 00:14.720 Now you can create a new function. 00:14.720 --> 00:18.640 And then for example sending an email to a specific email. 00:18.640 --> 00:20.720 And then you can call it right here. 00:20.720 --> 00:26.680 So it will send this thing instead of printing your email okay. 00:26.680 --> 00:28.200 So it is how it is working. 00:28.720 --> 00:31.320 And as you see now the code is work. 00:31.360 --> 00:34.640 It looks like it is very ugly. 00:34.680 --> 00:40.880 It is better to use object oriented programming language when you are writing your code and it's uh, 00:40.920 --> 00:43.400 while it is getting more complex. 00:43.920 --> 00:50.680 So here we are going to use classes to make this looks more beautiful. 00:50.680 --> 00:52.040 You may ask, what is a class? 00:52.040 --> 00:53.680 Okay, a class is a blueprint. 00:53.920 --> 00:59.880 While we are using, we put a lot of methods inside the classes, and then we can call it in other files 01:00.400 --> 01:01.400 in this file. 01:01.400 --> 01:06.410 And that is more beautiful and that is easy to use. 01:06.450 --> 01:12.450 Okay, so here we are going to create a new class. 01:12.450 --> 01:20.170 So while creating class just like function we first use the class keyword and then give a name. 01:20.170 --> 01:27.730 So here it's going to be capital key logger okay a logger with capital key. 01:28.290 --> 01:34.970 Now I'm going to highlight everything here and then hit one tab okay. 01:35.850 --> 01:37.930 Now it looks better. 01:38.490 --> 01:46.970 And as you see here we have two two function I think okay one function that is here. 01:46.970 --> 01:50.730 And the other function which is this one which is report function. 01:50.730 --> 01:58.850 Now that I have the class here, I need to use self with each function here as argument. 01:58.890 --> 02:04.250 The first argument is going to be self keyword and also Here. 02:06.490 --> 02:12.010 And also while we are calling in this any function in this part. 02:12.050 --> 02:12.490 Okay. 02:12.850 --> 02:19.490 Any function that you're calling, you need to add the self at the beginning of the name of that. 02:19.490 --> 02:21.450 So you see we have report here. 02:21.810 --> 02:25.610 Now you need to use self dot report. 02:25.650 --> 02:26.090 Okay. 02:27.730 --> 02:29.530 Self dot report. 02:30.010 --> 02:34.810 And also as you see we have another function that is here. 02:34.930 --> 02:40.850 Here again we need to use self dot process key press. 02:43.050 --> 02:43.490 Okay. 02:44.810 --> 02:47.850 And that is good. 02:47.890 --> 02:48.450 Okay. 02:48.490 --> 02:49.970 Right now it is giving me an error. 02:50.010 --> 02:54.530 That is because it is not inside this function. 02:54.650 --> 03:00.490 So as you see right now we have this part that is starting our program. 03:00.730 --> 03:03.250 So it is better to put them into a function. 03:03.290 --> 03:03.490 Okay. 03:03.530 --> 03:04.650 Inside a function. 03:04.810 --> 03:07.460 Here I'm going to going to define a new method or function. 03:07.620 --> 03:09.620 I'm going to name it start function. 03:10.140 --> 03:12.780 So again here I need to give self. 03:15.220 --> 03:17.180 And I'm going to select this. 03:17.180 --> 03:18.300 Hit the tab. 03:18.860 --> 03:22.340 Now it looks a bit okay. 03:23.060 --> 03:26.780 And also here you see we are calling this one. 03:27.140 --> 03:37.180 So we need to use self dot report said report self. 03:38.420 --> 03:39.740 Report self. 03:39.940 --> 03:40.820 This one okay. 03:43.700 --> 03:49.420 Uh no problem. 03:49.460 --> 03:49.860 Okay. 03:50.180 --> 03:57.980 Now that everything looks good. 03:58.180 --> 04:02.500 Uh huh. 04:02.980 --> 04:05.460 Self is not defined by list. 04:06.740 --> 04:07.020 Okay. 04:07.100 --> 04:08.260 That is because of this. 04:10.420 --> 04:13.260 So okay, now the error is gone. 04:13.780 --> 04:15.940 Now you see we have this one. 04:15.980 --> 04:16.300 Okay. 04:16.340 --> 04:18.820 That is, uh, completed. 04:18.860 --> 04:26.820 Now, if I execute, if I run this program, it will do nothing because we never called these, uh, 04:26.860 --> 04:27.540 functions. 04:27.540 --> 04:31.660 And also, we never created an object for this key logger. 04:31.700 --> 04:38.980 Okay, now, if I save this and then go back here, control C, this. 04:45.060 --> 04:46.380 Lets us clear. 04:51.020 --> 04:51.660 See? 04:51.660 --> 04:53.740 We have nothing immediately. 04:53.740 --> 04:56.100 It's, uh, closing that. 04:56.860 --> 05:03.020 So, uh, again here, inside this folder, I'm going to create a new file. 05:03.020 --> 05:07.620 I'm going to name it n logger dot p y. 05:07.660 --> 05:08.100 Okay. 05:09.110 --> 05:10.910 so we have it here. 05:10.950 --> 05:11.310 Okay. 05:12.430 --> 05:15.750 Now I'm going to import the module. 05:15.790 --> 05:16.110 Okay. 05:16.590 --> 05:18.430 It was Ilogger. 05:18.470 --> 05:21.230 Import Ilogger. 05:21.630 --> 05:24.470 And let's create an object. 05:24.510 --> 05:26.470 This is going to be my key logger. 05:27.630 --> 05:31.710 That's equal to we had a class. 05:31.710 --> 05:34.470 The class name was key logger. 05:34.510 --> 05:34.910 Okay. 05:38.910 --> 05:39.830 Not really. 05:39.830 --> 05:42.230 That key logger. 05:42.230 --> 05:46.430 Dot capital key logger. 05:46.470 --> 05:51.550 Okay, let me show you that right here. 05:51.590 --> 05:52.030 Okay. 05:52.550 --> 05:54.990 We have this class with Capital key. 05:55.230 --> 05:59.470 Every time you're importing a you're creating a class. 05:59.470 --> 06:02.830 You need to use capital letter okay. 06:02.870 --> 06:05.470 In the beginning you need to use capital letter. 06:05.870 --> 06:11.470 For example here we have let's see if we have any. 06:11.510 --> 06:12.550 Um, okay. 06:12.590 --> 06:12.950 Here. 06:12.950 --> 06:15.390 You see, we have the timer. 06:15.870 --> 06:18.470 So this timer, the T is capital. 06:18.470 --> 06:20.990 That means this timer is a class. 06:21.030 --> 06:21.430 Okay. 06:22.790 --> 06:23.870 So here the same. 06:24.350 --> 06:25.910 We are importing the key logger. 06:25.950 --> 06:27.310 We're using the key logger. 06:27.310 --> 06:28.590 Dot key logger. 06:28.790 --> 06:29.510 Okay. 06:29.550 --> 06:31.990 So this key logger is a class right now. 06:31.990 --> 06:34.750 And this is its object okay. 06:34.790 --> 06:37.550 We created the object for the key logger. 06:37.590 --> 06:43.550 Now now we have a function called start okay. 06:43.590 --> 06:45.510 So let's use that. 06:50.070 --> 06:50.830 Okay. 06:50.870 --> 06:58.430 My key logger dot start which is a function that is located here okay. 06:58.950 --> 07:04.710 Now whenever you call this function so it will start executing all the program okay. 07:05.430 --> 07:07.230 Now let me save it. 07:07.230 --> 07:12.560 And I'm going to go back here I'm going to use Python. 07:12.720 --> 07:17.640 It was in logarithm pi while I'm executing this. 07:17.680 --> 07:25.800 It is giving me an error and saying that log is not defined in which line. 07:26.480 --> 07:27.400 Line four. 07:27.440 --> 07:28.600 Line 25. 07:28.640 --> 07:28.880 In. 07:28.880 --> 07:29.240 Start. 07:29.280 --> 07:31.120 Line 25 in start. 07:31.160 --> 07:31.560 Okay. 07:34.960 --> 07:36.800 And start. 07:36.800 --> 07:37.520 Function. 07:37.520 --> 07:38.400 Line 24. 07:40.920 --> 07:41.200 Okay. 07:41.200 --> 07:42.400 We don't have it here. 07:43.920 --> 07:45.440 End log. 07:45.480 --> 07:46.080 Okay. 07:53.240 --> 07:53.560 Okay. 07:53.560 --> 07:57.200 There is one problem, and that is here. 07:57.240 --> 07:57.560 Okay. 07:57.600 --> 08:02.520 We put the log global variable inside the class. 08:03.240 --> 08:05.000 This needs to be out of the class. 08:05.040 --> 08:05.680 Okay. 08:05.720 --> 08:08.880 So for that because of that it gives me a name error. 08:08.920 --> 08:11.760 Like this log is not defined in this location. 08:12.400 --> 08:14.720 And also all other places. 08:15.120 --> 08:21.680 So now if I execute, if I add this okay, from here and put it out of the class. 08:26.800 --> 08:32.960 And let me something like this and I save this, let's come back here. 08:35.560 --> 08:37.720 Now if I type here, for example. 08:37.760 --> 08:39.480 Hello world. 08:41.480 --> 08:44.320 Now you see that it is giving me what I want. 08:44.360 --> 08:50.680 Okay, after each six second, this will give me the report. 08:50.720 --> 08:51.360 Okay. 08:51.400 --> 08:58.680 So it is how you use object oriented programming with Python and there is no big changes. 08:58.720 --> 08:59.160 Okay. 08:59.200 --> 09:04.280 It's the same thing while we were using that before. 09:04.320 --> 09:04.720 Okay. 09:06.160 --> 09:14.720 So since it's so simple, let's go and do something like this part or something.