WEBVTT 00:00.033 --> 00:02.910 -: Hi everyone and welcome back. 00:02.910 --> 00:05.430 In the next lecture, you're going to be working 00:05.430 --> 00:09.420 on the Grid World demonstration and as an update 00:09.420 --> 00:11.970 this lecture is to help set you up with 00:11.970 --> 00:14.850 an environment to run that without any issues 00:14.850 --> 00:17.730 and this is because the original Grid World program 00:17.730 --> 00:21.120 or files, were released with Python 2.7. 00:21.120 --> 00:24.660 As we know, Python now has Python 3 available 00:24.660 --> 00:26.580 that most of us are using. 00:26.580 --> 00:28.650 But these files were originally built 00:28.650 --> 00:31.020 for more of a pure Python purpose. 00:31.020 --> 00:33.360 You don't really need to set up or install anything. 00:33.360 --> 00:36.420 So the best option, barring any customizations 00:36.420 --> 00:37.980 or changes to the algorithm 00:37.980 --> 00:39.720 and the grid world visualization. 00:39.720 --> 00:41.700 For our demonstration purposes 00:41.700 --> 00:44.100 we can set up a new environment. 00:44.100 --> 00:45.720 It's really simple and this is also 00:45.720 --> 00:47.310 something really powerful to use 00:47.310 --> 00:49.590 when you're working on any projects because you can set 00:49.590 --> 00:53.880 up multiple virtual environments within Anaconda 00:53.880 --> 00:55.050 and we're gonna go through the steps 00:55.050 --> 00:57.570 so that you can set it up for this demonstration. 00:57.570 --> 01:00.600 If you want to run, again in the next video 01:00.600 --> 01:02.340 you will see the demonstration. 01:02.340 --> 01:04.299 You don't need to set this environment up 01:04.299 --> 01:06.390 because it's just for Grid World, 01:06.390 --> 01:08.460 but for those of you who want to follow along 01:08.460 --> 01:10.050 and want to run the commands 01:10.050 --> 01:12.390 I would highly recommend this approach. 01:12.390 --> 01:15.630 In order to do so, please launch the Anaconda Navigator. 01:15.630 --> 01:17.370 Once you have the navigator up 01:17.370 --> 01:19.530 you're gonna go to the environments command. 01:19.530 --> 01:21.300 When you have the environment set up 01:21.300 --> 01:24.780 you could find the create option, click on create 01:24.780 --> 01:26.730 and here you're gonna name your environment. 01:26.730 --> 01:30.153 So we can use let's say, grid test. 01:31.020 --> 01:34.200 Once you have the name, you can select the Python version. 01:34.200 --> 01:36.090 Also, quickly as a reminder 01:36.090 --> 01:38.160 you could have any Anaconda version. 01:38.160 --> 01:40.530 If you downloaded the most recent Anaconda 01:40.530 --> 01:42.120 that's absolutely fine. 01:42.120 --> 01:43.890 You can set up versions within it. 01:43.890 --> 01:47.340 As you'll see, we have 2.7 the version that we wanna work 01:47.340 --> 01:48.690 with in this environment. 01:48.690 --> 01:50.850 This is a separate from your root environment. 01:50.850 --> 01:53.700 You can see as an example, I have quite a few environments 01:53.700 --> 01:57.510 set up for any projects or applications that I'm working on. 01:57.510 --> 02:00.690 It's nice to have because you can have the version 02:00.690 --> 02:04.050 and specific library versions contained to that environment. 02:04.050 --> 02:05.460 It's highly recommended. 02:05.460 --> 02:07.860 So what we can set up is 2.7. 02:07.860 --> 02:11.103 Once we have 2.7, we have our grid test. 02:12.120 --> 02:15.990 Let's do grid test one because I do think I already 02:15.990 --> 02:18.000 had a grid test as I do. 02:18.000 --> 02:20.910 So let's do grid world test. 02:20.910 --> 02:24.510 As we have grid world test, we're gonna click on create. 02:24.510 --> 02:27.660 Let that create for a moment. 02:27.660 --> 02:31.260 While that's creating, you can have two options. 02:31.260 --> 02:34.860 You can launch an environment from here 02:34.860 --> 02:38.520 and if you want to install, let's say Spider or Jupiter 02:38.520 --> 02:41.550 or anything like that, once you go back to the home 02:41.550 --> 02:46.290 once it loads, you can select the environment. 02:46.290 --> 02:47.730 So we want grid world test, and then you 02:47.730 --> 02:49.080 can install the applications on that. 02:49.080 --> 02:50.610 We don't need that right now because we're gonna be 02:50.610 --> 02:51.930 working straight from the terminal. 02:51.930 --> 02:53.970 As you'll see in the next lecture. 02:53.970 --> 02:55.380 If you go to your environment 02:55.380 --> 02:58.410 you can click on the grid world test, 02:58.410 --> 03:03.000 click on the green arrow and select open terminal. 03:03.000 --> 03:05.610 That is one method that you can do. 03:05.610 --> 03:08.310 We're gonna open the terminal here in a second. 03:08.310 --> 03:11.580 Just give my computer one moment since it's still building 03:11.580 --> 03:15.180 and we have it open and you'll see that it's activated. 03:15.180 --> 03:17.610 Another option is to bring up a terminal. 03:17.610 --> 03:20.850 Let me launch this for Mac and Windows, 03:20.850 --> 03:22.170 or excuse me for Mac and Linux. 03:22.170 --> 03:25.260 You can use the source activate command 03:25.260 --> 03:27.660 and then you're gonna use the name of your environment. 03:27.660 --> 03:30.300 So we're using Grid World test 03:30.300 --> 03:32.670 and this would activate that environment. 03:32.670 --> 03:35.100 If you're on Windows, you do not need the source command 03:35.100 --> 03:38.250 you would just use the activate and the environment name. 03:38.250 --> 03:40.140 So we could run this and as you'll see, 03:40.140 --> 03:42.000 we're in the environment. 03:42.000 --> 03:44.880 Next, you can find the files for the next lecture 03:44.880 --> 03:47.790 attached to this lecture and the next lecture 03:47.790 --> 03:50.670 I'm going to grab the files and bring 'em into this folder. 03:50.670 --> 03:52.410 I'm gonna CD to change the directory 03:52.410 --> 03:54.150 to the location of those files 03:54.150 --> 03:56.730 and I'm gonna drag and drop them into this folder. 03:56.730 --> 03:59.374 Give one second let me just bring this over 03:59.374 --> 04:03.690 CD into this and I can always check the files. 04:03.690 --> 04:05.310 There we go I'm gonna clear this. 04:05.310 --> 04:07.890 So we have the files cleared 04:07.890 --> 04:10.200 and we can see into the terminal. 04:10.200 --> 04:12.030 Now, this is only for demonstration purpose 04:12.030 --> 04:14.550 just to demonstrate that it is running and executing. 04:14.550 --> 04:17.220 In the next lecture Kiel is going to explain 04:17.220 --> 04:18.420 all the details related 04:18.420 --> 04:20.640 to the grid world visualization. 04:20.640 --> 04:23.490 But in order to run it and test it 04:23.490 --> 04:25.200 I just want to issue the command that 04:25.200 --> 04:28.350 we were working with in the next lecture 04:28.350 --> 04:33.207 and that is the Python grid world.high K10 A flag 04:37.350 --> 04:39.600 and the Q flag actually don't need the flag there 04:39.600 --> 04:41.430 and the Q, I just wanna verify 04:41.430 --> 04:44.310 that this runs so we can run a test and it is running. 04:44.310 --> 04:46.470 So I'm gonna exit out I'm gonna clear this 04:46.470 --> 04:48.480 because we only want to make sure 04:48.480 --> 04:50.400 that the files are executing. 04:50.400 --> 04:51.840 In the next lecture you're going to 04:51.840 --> 04:54.420 see the demonstration of Grid world.pie 04:54.420 --> 04:57.030 and you'll see how what the flags mean 04:57.030 --> 04:58.230 Kiel is going to go through 04:58.230 --> 05:01.200 and explain the grid world pie, set up an information. 05:01.200 --> 05:05.400 This is to just set up your environment for Python 2.7 05:05.400 --> 05:07.440 and you can do this for as many environments 05:07.440 --> 05:09.060 or other environments that you're working with. 05:09.060 --> 05:11.190 It's just extremely helpful. 05:11.190 --> 05:12.930 All right, hope you found this helpful 05:12.930 --> 05:15.430 and enjoy the great world visualization coming up.