WEBVTT 00:00.560 --> 00:00.920 Okay. 00:00.960 --> 00:04.280 The program is, uh, almost complete. 00:04.440 --> 00:07.560 But still, there is something we need to add. 00:07.920 --> 00:16.320 Um, if you're using OOP and that is a constructor, you may ask what is a constructor? 00:16.360 --> 00:16.600 Okay. 00:16.640 --> 00:24.680 Constructor is like main function on Java if you are moving from Java to Python. 00:24.840 --> 00:30.400 If not these uh, constructor method is the main method. 00:30.400 --> 00:38.120 Whenever we are creating the object from these class of key logger, the first thing which is going 00:38.120 --> 00:42.840 to be executed is the main function or this constructor. 00:42.880 --> 00:45.760 So how can we create constructor in Python. 00:45.880 --> 00:47.480 Let's do that okay. 00:47.520 --> 00:48.920 We define it okay. 00:48.960 --> 00:51.960 Use two and two underscore here. 00:52.160 --> 00:55.720 And then we call it init something like this. 00:56.120 --> 00:58.800 But let me remove some of them from here. 01:02.240 --> 01:02.560 Okay. 01:02.600 --> 01:03.440 This part. 01:04.600 --> 01:08.200 And inside here, if you define anything. 01:08.320 --> 01:08.720 Okay. 01:08.840 --> 01:14.000 If you add anything that will be added to the class. 01:15.040 --> 01:19.600 For example, here we are going to move the log keyword. 01:19.640 --> 01:20.760 Global keyword. 01:20.920 --> 01:34.120 We'll go global uh variable into uh this one into this um init method which is the constructor. 01:34.160 --> 01:35.600 Now we can use it here. 01:35.640 --> 01:36.480 Okay. 01:36.480 --> 01:42.360 But not just the log we need to use self dot log is equal to nothing. 01:42.400 --> 01:43.080 Okay. 01:43.120 --> 01:45.480 So now this is okay. 01:45.520 --> 01:46.600 Okay. 01:46.640 --> 01:49.760 And also I'm going to create another method here. 01:50.160 --> 01:56.000 Okay I am going to name it append uh to. 01:58.160 --> 01:58.750 Log Lock. 01:59.110 --> 02:08.110 Okay, so we give the cell here and right here because we are appending something to the log. 02:08.510 --> 02:10.510 So we need to add another variable here. 02:10.550 --> 02:10.670 Okay. 02:10.710 --> 02:11.510 Another argument. 02:11.510 --> 02:14.150 And that is going to be for example a string variable. 02:14.830 --> 02:26.710 And here inside this we use self dot log is equal to self dot log plus string. 02:26.750 --> 02:27.110 Okay. 02:27.630 --> 02:29.230 Now by doing this you know what. 02:29.590 --> 02:31.990 What that what this means okay. 02:31.990 --> 02:38.430 Because we are concatenating these two and we are adding that to the log variable okay. 02:40.550 --> 02:41.710 Okay. 02:41.750 --> 02:44.430 And here this method is okay. 02:44.830 --> 02:51.550 And after this time we don't need the global variable because we have a method called append two. 02:52.350 --> 02:57.470 And we need to add something else here okay. 02:57.830 --> 03:01.030 Uh, let's remove everything from here. 03:02.150 --> 03:06.470 And down here, I need to add something called. 03:06.710 --> 03:08.150 Let's create another variable. 03:08.150 --> 03:10.430 I'm going to name it current. 03:10.470 --> 03:11.710 Um, current key. 03:11.750 --> 03:12.430 Okay. 03:12.470 --> 03:21.110 So this current key is equal to s t r key dot c h a r. 03:21.150 --> 03:21.510 Okay. 03:21.750 --> 03:23.590 Now we have this here. 03:25.830 --> 03:28.270 And also in here we have. 03:28.750 --> 03:35.510 If key is equal to key dot space then we need to add a space instead of key dot space okay. 03:37.070 --> 03:41.550 So here we don't need to use this kind of log and something like this. 03:41.670 --> 03:47.430 We just need to add that current key to. 03:49.870 --> 03:53.790 Current key which is equal to something like this okay. 03:56.030 --> 03:56.430 Okay. 03:58.710 --> 04:02.870 So and also we have the else part in else part. 04:02.910 --> 04:06.790 We need to add this all here. 04:06.830 --> 04:07.790 Okay. 04:07.790 --> 04:15.310 So here we are going to tell that this current key is equal to current. 04:15.350 --> 04:18.630 Key is equal to space okay. 04:19.430 --> 04:22.990 Plus this key and then plus space. 04:23.710 --> 04:27.350 So this is the last thing we need to do. 04:27.350 --> 04:36.870 And also we need to uh we need to use uh append to log method here. 04:36.870 --> 04:38.790 We need to call this function here. 04:39.750 --> 04:42.270 And that is going to be in here. 04:42.270 --> 04:47.790 So we use self dot append to log okay. 04:47.790 --> 04:50.950 And we are adding the current key. 04:50.990 --> 05:00.710 Now each time we execute the program and we press any key that will add the first key here to the log, 05:00.710 --> 05:03.790 and then try to add it into this current key. 05:03.830 --> 05:04.150 Okay. 05:04.150 --> 05:07.230 And each time it is adding a new key we are pressing. 05:07.270 --> 05:13.270 And at the end you see that this append method is doing the concatenation here. 05:13.870 --> 05:14.190 So. 05:16.350 --> 05:16.790 Okay. 05:16.830 --> 05:23.510 And also in report report again you see we have a global log here. 05:23.550 --> 05:24.590 Okay. 05:24.630 --> 05:28.390 That's something we need to remove it from here. 05:28.510 --> 05:29.550 Okay. 05:29.550 --> 05:31.030 So we don't need this. 05:33.030 --> 05:38.910 And instead of having only log we use self dot log. 05:39.710 --> 05:46.710 And also we have the log here we need to use self dot log which is equal to nothing. 05:46.750 --> 05:47.150 Okay. 05:48.150 --> 05:48.510 So. 05:50.950 --> 05:53.750 Now let's go and do a quick test again. 05:58.540 --> 05:59.980 Let me clear this. 06:02.420 --> 06:02.820 Okay. 06:02.860 --> 06:04.180 Python in logger. 06:04.460 --> 06:05.700 Py hit enter. 06:06.500 --> 06:11.140 Now, for example, I am saying this is a test. 06:12.140 --> 06:13.380 See? 06:13.420 --> 06:16.540 Now it is going to print s t here. 06:16.780 --> 06:17.220 Okay. 06:17.700 --> 06:24.180 And again I'm going to this is another, uh test. 06:24.660 --> 06:27.700 So now you see this is another th. 06:27.940 --> 06:33.820 And here we are going to have a backspace and then s t and something like. 06:33.860 --> 06:36.980 So now this program is almost completed. 06:37.180 --> 06:41.380 Almost not really completed but almost completed. 06:41.700 --> 06:45.180 Here you see we are printing the log. 06:45.220 --> 06:45.860 Okay. 06:45.900 --> 06:49.940 Now instead of printing this we need to send this to an email. 06:50.660 --> 06:52.700 So let's go and do that.