WEBVTT 00:00.080 --> 00:06.590 Now that your account is correctly set up and configured, let's create a bot on the Telegram app. 00:06.620 --> 00:11.930 We first need to do that and then we will be able to use this bot in a python program. 00:11.930 --> 00:16.310 So you're going to search here for bot father like this. 00:17.400 --> 00:22.830 So you type exactly like this and you're going to go with the first one, the certified one, because 00:22.830 --> 00:29.280 you can see you have many well, fake but father okay with slightly different username, but you just 00:29.280 --> 00:37.980 go with the bot father and this bot father is basically going to allow you to create new bots. 00:38.340 --> 00:43.200 So you click on Start or you just send slash, you can see slash start. 00:43.200 --> 00:49.170 If you don't have a start button and you have a help here, I can help you to create and manage telegram 00:49.170 --> 00:49.680 bots. 00:49.710 --> 00:50.430 ET cetera. 00:50.430 --> 00:51.330 ET cetera. 00:51.330 --> 00:55.740 And so you can create bots, you can edit bots, you have settings. 00:55.770 --> 00:56.520 ET cetera. 00:56.550 --> 00:58.440 You're going to do new bots. 00:58.470 --> 01:04.560 Okay, So slash new bots, you can either click on this or just write new bot. 01:05.870 --> 01:06.410 All right. 01:06.440 --> 01:07.220 A new boat. 01:07.400 --> 01:09.260 So you choose a name for the boat. 01:10.280 --> 01:13.040 Okay, Let's name it goes boat. 01:13.220 --> 01:15.860 So that's just the name we're going to see. 01:15.860 --> 01:18.800 And then we need to choose a username. 01:19.040 --> 01:22.370 It needs to end in a boat, as you can see. 01:22.400 --> 01:27.140 So let's try API, Arduino course. 01:27.650 --> 01:36.500 But okay, so if it tells you that the name is already taken, then you try another name. 01:36.500 --> 01:37.100 Okay. 01:37.280 --> 01:39.740 Until you have a name that is unique. 01:39.740 --> 01:43.370 So this name doesn't have to be unique, but this name will be unique. 01:43.370 --> 01:47.750 So if you try, of course to have the same as me, well, that's not going to work. 01:47.750 --> 01:48.950 And then you see down. 01:48.950 --> 01:49.880 Congratulations. 01:49.880 --> 01:50.360 ET cetera. 01:50.360 --> 01:51.020 ET cetera. 01:51.020 --> 01:53.660 And you have a token here. 01:53.660 --> 01:55.970 That is the most important thing. 01:56.120 --> 01:56.540 Okay? 01:56.540 --> 02:00.170 And you can see, keep your token secure and store it safely. 02:00.170 --> 02:02.180 This should be secret. 02:02.180 --> 02:06.300 So why I'm showing you this now is simply because. 02:06.300 --> 02:10.860 Well, I'm going to use this token when I record the videos and then I'm going to change it. 02:10.860 --> 02:15.180 So if you try to use this exact token, you're not going to be able to use my bot. 02:15.210 --> 02:15.780 Okay? 02:15.870 --> 02:21.210 The token basically will allow you to connect to the bot from your Python program. 02:21.210 --> 02:26.550 So for the bot you have a name, you have a username that is unique and a token. 02:26.760 --> 02:33.450 Now let's do a start for example, again to get the help you can see, for example, what I can do is 02:33.450 --> 02:38.430 revoke both token access for that boat. 02:38.760 --> 02:43.230 You can see your token was replaced with a new one and then you have this. 02:43.260 --> 02:48.060 Okay, so this token here is not valid anymore. 02:48.270 --> 02:49.590 This is the new one. 02:49.590 --> 02:54.180 And so basically I'm going to revoke my token after I record the course. 02:54.540 --> 02:54.810 Okay. 02:54.810 --> 02:55.620 So we have a token. 02:55.620 --> 02:58.290 We're going to come back to this token just a bit later. 02:58.290 --> 03:04.070 And now what we are going to do, we're going to create a group chat, okay? 03:04.080 --> 03:08.370 That we are going to use for, for sending notifications. 03:08.370 --> 03:11.190 So you click here. 03:11.490 --> 03:12.630 New group. 03:14.160 --> 03:19.710 Let's name this group course group, so you name it as you want. 03:20.580 --> 03:22.470 You can add members. 03:22.500 --> 03:28.620 Let's search for RPI, Arduino course bot. 03:28.620 --> 03:32.160 So I find the bot and I create the group. 03:32.820 --> 03:33.090 Okay. 03:33.090 --> 03:41.040 So you can see now in the group view group info, we have two members, so me and the bot. 03:41.070 --> 03:42.470 We have just created. 03:42.480 --> 03:42.960 Okay. 03:42.960 --> 03:46.530 And so you can add other persons if you want. 03:47.960 --> 03:52.610 And well, we are going to communicate with the bot through this group here. 03:53.270 --> 03:56.300 So the telegram configuration is done for the bot. 03:56.330 --> 03:59.240 Now let's go back to bot Father. 03:59.720 --> 03:59.820 Okay. 03:59.870 --> 04:06.710 If you don't have it here, you just search for it and let's copy the token. 04:06.920 --> 04:11.510 Now, what I'm going to do is I'm going to show you how basically to store the token somewhere on your 04:11.510 --> 04:15.740 Raspberry Pi and just get it on your python code. 04:15.740 --> 04:19.400 And then in the next lesson, we are going to control the bot with Python. 04:19.400 --> 04:23.000 So just a bit more of configuration and that's it. 04:23.000 --> 04:25.310 So let's open a terminal actually. 04:26.600 --> 04:33.080 And what I'm gonna do is basically we are in the home directory, so we have this. 04:33.080 --> 04:38.270 But if I do dash A to list all I have also the hidden files. 04:38.750 --> 04:39.290 Okay. 04:39.500 --> 04:42.560 And there is one hidden directory here. 04:43.100 --> 04:43.880 Local. 04:43.880 --> 04:53.270 So dot local we are going to go in to local LS and let's do a okay. 04:53.270 --> 04:55.400 We are going to go in share. 04:56.570 --> 04:56.870 Okay. 04:56.870 --> 05:02.270 And I'm going to create a new file here and put the token inside. 05:02.270 --> 05:06.680 So here we won't be able to make a 100% secure file for the token. 05:06.680 --> 05:11.300 But basically by hiding the file somewhere, that is a bit hard to find. 05:11.330 --> 05:17.270 This is a bit more secure than just putting, for example, the token on the desktop or putting in the 05:17.270 --> 05:21.710 home directory or directly hardcoding the token in the code. 05:21.710 --> 05:23.450 So I'm going to create here. 05:23.450 --> 05:30.200 So nano, let's name Dot, we are going to create a hidden file as well. 05:30.350 --> 05:35.120 Telegram bot token. 05:35.240 --> 05:40.730 Okay, press enter and I'm going to paste the token with Ctrl shift and V. 05:41.420 --> 05:41.720 Okay. 05:41.720 --> 05:50.990 This is the token that I got from here and I'm going to save it with Ctrl s and Ctrl X to quit. 05:51.500 --> 05:53.810 Now you can see if I do well, nothing. 05:53.810 --> 06:00.350 If I do dash a, I can see I have my telegram bot token here. 06:00.590 --> 06:04.490 So once again, this is not 100% secure solution. 06:04.490 --> 06:09.770 If you want something completely secure, you would need to use, for example, the OAuth two protocol. 06:09.770 --> 06:14.230 But that's something really more complex and outside of the scope of this course. 06:14.240 --> 06:19.880 So now that we have our token saved here, let's open. 06:23.830 --> 06:24.940 Thonny python ide. 06:27.180 --> 06:30.210 Okay, let's create a new file. 06:31.020 --> 06:34.890 USR bin env and python three. 06:38.460 --> 06:42.060 And let's just write the code to get the token. 06:42.060 --> 06:47.460 So what we need to do, we just need to open the file we have just created and save the token inside 06:47.460 --> 06:47.940 a variable. 06:47.940 --> 07:02.520 So we've open and then so slash home slash by slash dot local slash share and slash dot telegram. 07:03.090 --> 07:03.900 But. 07:05.540 --> 07:05.720 Okay. 07:06.350 --> 07:06.620 Okay. 07:06.620 --> 07:12.740 So make sure you have the correct path here for the file with read permission. 07:13.470 --> 07:13.610 Okay. 07:13.610 --> 07:15.900 We don't need to write as f. 07:15.920 --> 07:16.130 Okay. 07:16.130 --> 07:21.170 So we're going to open this file and get it as f in this block of code. 07:21.170 --> 07:22.580 And we do Telegram. 07:24.980 --> 07:32.440 Token is equal to f dot red dot is trip. 07:33.950 --> 07:34.580 And now. 07:34.580 --> 07:39.940 Well this is important is that you don't print the telegram token. 07:39.950 --> 07:46.760 Basically if you design a more secure application and then you just print the token you got in the code. 07:46.760 --> 07:50.210 Well all the security you have done is just useless. 07:50.210 --> 07:55.520 So I'm still going to print it just once to make sure that it's working. 07:58.220 --> 07:58.790 Okay. 07:58.790 --> 07:59.720 I use strip. 07:59.720 --> 07:59.960 Okay. 07:59.960 --> 08:05.660 Because maybe at the end of the file we have some new line character or some carriage return that we 08:05.660 --> 08:06.140 don't want. 08:06.140 --> 08:08.330 So we make sure that they are gone. 08:08.330 --> 08:13.070 Because if we have, for example, a new line character, that's not going to work after that. 08:13.070 --> 08:14.780 So let's just run this. 08:16.190 --> 08:19.400 Let's name it Telegram bot. 08:20.890 --> 08:27.640 Okay, we have the token and now I'm going to do this and remove the print and we are not going to print 08:27.640 --> 08:30.760 the token anymore now that we know it's working. 08:30.760 --> 08:32.890 And let's now use this bot.