1 00:00:00,000 --> 00:00:03,990 So now we are going to install Python and Eclipse on a Mac. 2 00:00:04,000 --> 00:00:07,990 So this is the Python download page, and you will see I have already downloaded 3 00:00:08,000 --> 00:00:12,990 Python 3.1.2 Mac OS X Installer Disk Image. 4 00:00:13,000 --> 00:00:16,990 So if you are on a Mac, that's the one that you want to download. 5 00:00:17,000 --> 00:00:19,990 If the version number is a little bit higher, if it's a later version, go ahead 6 00:00:20,000 --> 00:00:23,990 and install the later version. That should work just fine. 7 00:00:24,000 --> 00:00:28,990 Then you want to download from the Eclipse download page, and Eclipse is written 8 00:00:29,000 --> 00:00:32,990 in Java, and it's actually a Java development environment, and so you will see 9 00:00:33,000 --> 00:00:34,990 that there are a lot of different choices. 10 00:00:35,000 --> 00:00:37,990 If you are a Java developer and you want to install one of these other ones, 11 00:00:38,000 --> 00:00:39,990 that's fine. Go ahead and do that. 12 00:00:40,000 --> 00:00:42,990 For my purposes, I am just getting the Eclipse Classic, because I am really just 13 00:00:43,000 --> 00:00:46,990 using it for Python development today. And you'll notice that when I run the 14 00:00:47,000 --> 00:00:50,990 mouse over this, it highlights the one for Mac OS X Cocoa, and that's really the 15 00:00:51,000 --> 00:00:52,990 one that you want to install. 16 00:00:53,000 --> 00:00:56,990 So I have already downloaded that as well, and here is my Downloads folder, and I 17 00:00:57,000 --> 00:01:00,990 have got the Eclipse downloaded, and I have the Python downloaded. 18 00:01:01,000 --> 00:01:06,990 So go ahead and close the browser, and we are going to start by installing Python. 19 00:01:07,000 --> 00:01:09,990 So I will double-click on the installer, and I will double-click on the 20 00:01:10,000 --> 00:01:15,990 Python.mpkg, and I will say Continue, and Continue, and Continue, 21 00:01:16,000 --> 00:01:18,990 and Agree, and Install. 22 00:01:19,000 --> 00:01:21,990 I am going to install this in default location. Type in my Password. 23 00:01:22,000 --> 00:01:27,990 Mac OS X already comes with Python installed, but it's Python 2, and so you 24 00:01:28,000 --> 00:01:32,990 really need to install Python 3 for this course, because this course is about Python 3. 25 00:01:33,000 --> 00:01:39,990 That installation is done, and I can unmount this, and I just want to go ahead 26 00:01:40,000 --> 00:01:47,990 and go out to my Applications folder, and then I will find Python 3.1 folder, and 27 00:01:48,000 --> 00:01:52,990 in there, you'll find IDLE. And I am going to drag that to my Doc because we are 28 00:01:53,000 --> 00:01:54,990 going to be using that. 29 00:01:55,000 --> 00:01:59,990 I will go ahead and we'll open it, so it's Python 3.1.2, and that's what we are looking for. 30 00:02:00,000 --> 00:02:02,990 So Python is installed and working on this Mac. 31 00:02:03,000 --> 00:02:07,990 I will Quit IDLE, and we are going to go ahead now and install Eclipse. 32 00:02:08,000 --> 00:02:11,990 So I am going to double-click on the Eclipse installer, and this is going to 33 00:02:12,000 --> 00:02:16,990 unarchive it. And it will unarchive the tar file, which is inside of the gz file. 34 00:02:17,000 --> 00:02:19,990 And I have got this folder, and all I need to do with at this point is drag this 35 00:02:20,000 --> 00:02:23,990 whole folder to my applications folder and I come in here, and I am going to find 36 00:02:24,000 --> 00:02:27,990 the folder called Eclipse, and inside of that folder there is the Eclipse 37 00:02:28,000 --> 00:02:32,990 application. I am going to drag that to my dock and run it. 38 00:02:33,000 --> 00:02:34,990 So you go ahead and open that. 39 00:02:35,000 --> 00:02:38,990 Now there are a few things we need to do to configure Eclipse. First thing, we 40 00:02:39,000 --> 00:02:41,990 are going to select a workspace. I am going to allow the default; you are 41 00:02:42,000 --> 00:02:43,990 welcome to use whatever folder works for you. 42 00:02:44,000 --> 00:02:47,990 I am going to select the check box to use it as a default, so it doesn't ask me again. 43 00:02:48,000 --> 00:02:52,990 Now before I do anything else, when Eclipse starts up, under the Help menu, I am 44 00:02:53,000 --> 00:02:57,990 going to go to Install New Software, and I am going to select this link. This is 45 00:02:58,000 --> 00:03:03,990 Available Software Sites, and I am going to add one, and this is for Pydev, and 46 00:03:04,000 --> 00:03:09,990 the URL is pydev.org/updates, with an s at the end. 47 00:03:10,000 --> 00:03:15,990 Say OK, and we see that gets added there, and I say OK, and then all I need 48 00:03:16,000 --> 00:03:20,990 to do is select that is go up here and type Pydev, and just the first couple of 49 00:03:21,000 --> 00:03:26,990 letters, and I will get this here, and I can double-click on that, Pending, and it finds Pydev. 50 00:03:27,000 --> 00:03:31,990 So you want to check Pydev. You don't need to check the Mylyn integration, unless 51 00:03:32,000 --> 00:03:36,990 you know what that is, and you are going to be using that. And I will select Next, 52 00:03:37,000 --> 00:03:42,990 PyDev for Eclipse, and Next. And I want to accept the terms of the license and 53 00:03:43,000 --> 00:03:44,990 Finish, and here we go. 54 00:03:45,000 --> 00:03:49,990 This should take just a moment. At the security warning, you want to say OK, and 55 00:03:50,000 --> 00:03:53,990 it is strongly recommended that you restart Eclipse. There is no reason not to. 56 00:03:54,000 --> 00:03:57,990 So I am just going to select Yes, and Eclipse will restart. 57 00:03:58,000 --> 00:04:00,990 So now I am going to go ahead, and I am going to go to the Workbench. That's this 58 00:04:01,000 --> 00:04:04,990 icon over here at the right, and I am going to maximize this on my workspace. 59 00:04:05,000 --> 00:04:07,990 You will see over here we have Java selected. 60 00:04:08,000 --> 00:04:12,990 I am going to select Other and Pydev and OK, and because I am not going to 61 00:04:13,000 --> 00:04:17,990 be doing any Java development, I am just going to right-click on Java and select Close. 62 00:04:18,000 --> 00:04:21,990 Then I can move this over, and there is my Pydev Workspace. 63 00:04:22,000 --> 00:04:28,990 Now before we get started, we need to go into Preferences, and under Pydev and 64 00:04:29,000 --> 00:04:34,990 Interpreter Python, we need to add our Python Interpreter, and this is so Pydev 65 00:04:35,000 --> 00:04:39,990 knows where to look for Libraries, what sort of Grammar to use, things like that. 66 00:04:40,000 --> 00:04:47,990 So I am going to go ahead and add it. I am going. It's under browse user > local > bin > 67 00:04:48,000 --> 00:04:53,990 python 3.1, and that's an alias, and it's supposed to be. And so when I say OK, it 68 00:04:54,000 --> 00:04:56,990 actually goes and it finds what the alias was pointing at. 69 00:04:57,000 --> 00:04:59,990 Under interpreter name, I am just going to type Python 3.1. 70 00:05:00,000 --> 00:05:03,990 I am going to say OK, and it will say OK. 71 00:05:04,000 --> 00:05:07,990 Now if you are also going to be doing Python 2 development, you might want to 72 00:05:08,000 --> 00:05:09,990 add that interpreter as well. 73 00:05:10,000 --> 00:05:12,990 I know I am not going to be, so I am going to leave it like this. 74 00:05:13,000 --> 00:05:16,990 So now I say OK, and it goes and it finds all of the frameworks, and it finds all 75 00:05:17,000 --> 00:05:20,990 the libraries, and it does all of this stuff, and now that's installed. 76 00:05:21,000 --> 00:05:23,990 So we are getting closer. At this point, we want to go back into the 77 00:05:24,000 --> 00:05:30,990 Preferences, and under Pydev and under Editor, see this thing that says Hover, 78 00:05:31,000 --> 00:05:32,990 and see it's a Show docstrings? 79 00:05:33,000 --> 00:05:35,990 I uncheck that. I find that very distracting. 80 00:05:36,000 --> 00:05:38,990 It's up to you if you want to uncheck that or not. 81 00:05:39,000 --> 00:05:43,990 What it does is whenever you hover over an object in Python, it will show you the 82 00:05:44,000 --> 00:05:46,990 entire documentation, and it will pop up for that object. 83 00:05:47,000 --> 00:05:51,990 I am sure some people find that very helpful. I find that it gets in the way, so I uncheck that. 84 00:05:52,000 --> 00:05:58,990 Also, up here in General and under Editors and Text Editors, I want to 85 00:05:59,000 --> 00:05:59,990 check, Show line numbers. 86 00:06:00,000 --> 00:06:04,990 I find that very useful, and I think you will too. So now we say OK. 87 00:06:05,000 --> 00:06:10,990 Over here in the Pydev Package Explorer, right-click and say New > Project, and 88 00:06:11,000 --> 00:06:15,990 select Pydev and select Pydev Project and Next. 89 00:06:16,000 --> 00:06:20,990 And under Interpreter, you want to select the Python 3.1 Interpreter, and under 90 00:06:21,000 --> 00:06:25,990 Grammar Version, you want to select 3.0, and make sure it says Python for the 91 00:06:26,000 --> 00:06:28,990 project type, and type in the name of project. 92 00:06:29,000 --> 00:06:34,990 I am going to call this Python 3 Essential Training, and select Finish. 93 00:06:35,000 --> 00:06:40,990 Now I have this project here, and I want to right-click on the project and say, 94 00:06:41,000 --> 00:06:44,990 New > Folder, and the parent folder will already be selected as Python 3 95 00:06:45,000 --> 00:06:50,990 Essential Training, and then select the Advanced button and select Link to folder in the system. 96 00:06:51,000 --> 00:06:57,990 Now I am going to select Browse, and on my desktop, I have my Exercise Files folder. 97 00:06:58,000 --> 00:07:00,990 So you want to select that wherever it is you put yours. I find the desktop to 98 00:07:01,000 --> 00:07:01,990 be very convenient for this. 99 00:07:02,000 --> 00:07:03,990 I am going to press Open. 100 00:07:04,000 --> 00:07:08,990 And so what this will do is this will add my Exercise folders to this Project 101 00:07:09,000 --> 00:07:13,990 folder without actually copying the folder. And so it will be just linked to the 102 00:07:14,000 --> 00:07:17,990 folder, and it will use it in place without making another copy of it. 103 00:07:18,000 --> 00:07:20,990 So I am going to say Finish, and there it is. 104 00:07:21,000 --> 00:07:27,990 Now just open up Chapter 02 and double- click on hello.py. And the first time you 105 00:07:28,000 --> 00:07:31,990 open something up after just installing Eclipse and Pydev and everything, it 106 00:07:32,000 --> 00:07:36,990 might take in a moment, and then there it is. We have our Hello, World! 107 00:07:37,000 --> 00:07:38,990 It's a very simple Python program. 108 00:07:39,000 --> 00:07:42,990 The whole purpose of this program is just as an exercise in getting your 109 00:07:43,000 --> 00:07:45,990 development environment running, so it's exactly what it is designed for. 110 00:07:46,000 --> 00:07:51,990 So when I select Run, it will ask me to Run As, and I will select Python Run, 111 00:07:52,000 --> 00:07:55,990 and say OK, and there we have it. There is our result: Hello, World! 112 00:07:56,000 --> 00:08:00,990 So this tells us that Python is installed, that Eclipse is installed, that Pydev 113 00:08:01,000 --> 00:08:06,990 is installed, Python Interpreter is configured within Eclipse and Pydev, and the 114 00:08:07,000 --> 00:08:07,990 entire environment is running. 115 00:08:08,000 --> 00:08:11,990 So now you have a working Eclipse environment where you can follow along with 116 00:08:12,000 --> 00:08:22,000 the exercises and do your own Python development.