mrspeaker/README

## README
These are the scripts I use to create the playlists for the AI Class (available here: http://www.mrspeaker.net/2011/10/26/ai-class-playlists/). It's not pretty, but it works. I put them up here due to popular demand.

The first stage is to grab the video list HTML from YouTube and extract/sort the videos. This is done with the Video_ID_scraper.html file (instructions there).

Next, paste the video info into the YouTube_Playlist_Uploader.py script and it generates the playlist. It relies on the GData APIs so you need a dev key etc.

Any questions to mrspeaker@gmail.com

## Video_ID_scraper.html
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html>
    <head>
        <title></title>
        <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6/jquery.min.js" type="text/javascript" charset="utf-8"></script>
        <script type="text/javascript" charset="utf-8">
            $(function(){
                var unitName = "Unit 7",
                    allVids = [],
                    vids;

                $(".playnav-item-title").each(function(i,s){
                    allVids.push({href:this.href, text:$(this).find("span").text()});
                });

                vids = allVids.filter(function(v){
                    return v.text.indexOf(unitName) > -1;
                })
                .map(function(v) {
                    return {
                        href: v.href,
                        text: v.text,
                        hash: v.text.slice(unitName.length).match(/([0-9]+[a-z]?)/g)[0]
                    }
                })
                .sort(function(a,b){
                    var num1 = parseInt(a.hash, 10),
                        num2 = parseInt(b.hash, 10);
                    if(num1 === num2) {
                        var let1 = a.hash.slice((num1 + "").length) || "0",
                            let2 = b.hash.slice((num2 + "").length) || "0";
                        return let1 > let2 ? 1 : -1;
                    }
                    return num1 - num2;
                });

                // Print them out
                var $vidbox = $("#vidbox").length > 0 ?
                        $("#vidbox") :
                        $("<div id='vidbox' />")
                            .css("font-family","monospace")
                            .prependTo("body");

                vids.forEach(function(v, i){
                    // Extract the vid id and convert to python format
                    var text = "\"" + v.href.slice(-11) + "\"" +
                            (i === vids.length - 1 ? "" : ",") +
                            " # " + v.text +
                            "<br/>";
                    $vidbox.append("<span>" + text + "</span>");
                });
                if(vids.length == 0) {
                    $vidbox.append("<span>No videos for the search string '" + unitName + "' found.</span>");
                }
            })
        </script>
    </head>
    <body>
        <!-- Replace this "section" tag with the contents of the YouTube video list -->
        <section>
            <h1>AI Class playlist extractor</h1>
            <p>
                I use this jQuery/JavaScript script to extract a list of video Ids that can be pasted
                into a python script which will create the youtube playlist. You have to paste some HTML
                to scrape into this document (instructions below), then copy/paste the ID text to
                the python script.
            </p>
            <h2>How to use</h2>
            <ol>
                <li>
                    Change the variable "unitName" at the top of the JavaScript to the
                    unit (or homework) you want to extract (eg, "Unit 7").
                </li>
                <li>
                    Replace the body of this HTML document with the HTML from the
                    <a href="http://www.youtube.com/user/knowitvideos#g/u">knowitvideos</a> list.
                    <ol>
                        <li>
                            To generate the list you need to click the "Load more" button until the videos
                            you are interested in are displayed in the scrolling window.
                        </li>
                        <li>
                            Then, you need to extract the HTML from the page: In Chrome you right-click
                            and "inspect element" - then find inspect the nodes until you find one that
                            has all of the videos as children elements (like, the "scrollbox-content" div).
                        </li>
                        <li>
                            In the inspector, choose "Copy as HTML" and paste the result into the body of this
                            HTML document (overwrite these stupid instructions)
                        </li>
                    </ol>
                </li>
                <li>
                    Refresh the page - it should find any matches on your search string. These can then
                    be pasted into the python script.
                </li>
            </ol>
        </section>
    </body>
</html>

## YouTube_Playlist_Uploader.py
import gdata.youtube
import gdata.youtube.service
import time

yt_service = gdata.youtube.service.YouTubeService()
yt_service.ssl = True

yt_service = gdata.youtube.service.YouTubeService()
yt_service.email = 'your@youtube_email.com'
yt_service.password = 'password'
yt_service.client_id = 'Mr Speaker Playlist Importer'

yt_service.source = yt_service.client_id
yt_service.developer_key = 'Y0uR_GdaTa_D3V3l0pEr_K3y'

yt_service.ProgrammaticLogin()

playlist = yt_service.AddPlaylist('AI Class Unit 7', 'AI Class unit 7 videos - including explanations')

ids = [
"pszEzBql4bw", # Unit 7 1 Introduction
"_VjyktjNMoM", # Unit 7 2 Propositional Logic
"eOp4UJl0ZIA", # Unit 7 2a Truth Tables
"4HWzU7RhfZE", # Unit 7 2b Answer
"ae_9TnTNPU0", # Unit 7 2c Question
"vGfOrh8ERXo", # Unit 7 2d Answer
"DDKhgqEWBps", # Unit 7 2e Question
"pxGxSt58kg0", # Unit 7 2f Answer
"nGZ2-EZnSh4", # Unit 7 2g Terminology
"WOYA5kQ_6gI", # Unit 7 2h Answer
"WQ7-B4H6-aE", # Unit 7 2i Propositional Logic Limitations
"hFzVZzMPy8Q", # Unit 7 3 First Order Logic
"TZ8iD-Rofk8", # Unit 7 3a Models
"Th_wM93aF94", # Unit 7 3b Syntax
"nkRYz5Omcr0", # Unit 7 3c Vacuum World
"JcQrAin3_V8", # Unit 7 3d Question
"vlbyPKhayiE", # Unit 7 3e Answer
"upyRNIh1LyE", # Unit 7 3f Question
"PY9d8qJ4BSY" # Unit 7 3g Answer
]

if isinstance(playlist, gdata.youtube.YouTubePlaylistEntry):
  print 'New playlist added:' + playlist.id.text
  playlist_id = playlist.id.text.split("/")[-1]
  playlist_uri = "http://gdata.youtube.com/feeds/api/playlists/" + playlist_id

  for vid_id in ids:
    print "Adding " + vid_id
    playlistEntry = yt_service.AddPlaylistVideoEntryToPlaylist(playlist_uri, vid_id)
    if isinstance(playlistEntry, gdata.youtube.YouTubePlaylistVideoEntry):
      print 'Video added'
    time.sleep(5)
	These are the scripts I use to create the playlists for the AI Class (available here: http://www.mrspeaker.net/2011/10/26/ai-class-playlists/). It's not pretty, but it works. I put them up here due to popular demand.

	The first stage is to grab the video list HTML from YouTube and extract/sort the videos. This is done with the Video_ID_scraper.html file (instructions there).

	Next, paste the video info into the YouTube_Playlist_Uploader.py script and it generates the playlist. It relies on the GData APIs so you need a dev key etc.

	Any questions to mrspeaker@gmail.com
	<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
	<html>
	<head>
	<title></title>
	<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6/jquery.min.js" type="text/javascript" charset="utf-8"></script>
	<script type="text/javascript" charset="utf-8">
	$(function(){
	var unitName = "Unit 7",
	allVids = [],
	vids;

	$(".playnav-item-title").each(function(i,s){
	allVids.push({href:this.href, text:$(this).find("span").text()});
	});

	vids = allVids.filter(function(v){
	return v.text.indexOf(unitName) > -1;
	})
	.map(function(v) {
	return {
	href: v.href,
	text: v.text,
	hash: v.text.slice(unitName.length).match(/([0-9]+[a-z]?)/g)[0]
	}
	})
	.sort(function(a,b){
	var num1 = parseInt(a.hash, 10),
	num2 = parseInt(b.hash, 10);
	if(num1 === num2) {
	var let1 = a.hash.slice((num1 + "").length) \|\| "0",
	let2 = b.hash.slice((num2 + "").length) \|\| "0";
	return let1 > let2 ? 1 : -1;
	}
	return num1 - num2;
	});

	// Print them out
	var $vidbox = $("#vidbox").length > 0 ?
	$("#vidbox") :
	$("<div id='vidbox' />")
	.css("font-family","monospace")
	.prependTo("body");

	vids.forEach(function(v, i){
	// Extract the vid id and convert to python format
	var text = "\"" + v.href.slice(-11) + "\"" +
	(i === vids.length - 1 ? "" : ",") +
	" # " + v.text +
	"<br/>";
	$vidbox.append("<span>" + text + "</span>");
	});
	if(vids.length == 0) {
	$vidbox.append("<span>No videos for the search string '" + unitName + "' found.</span>");
	}
	})
	</script>
	</head>
	<body>
	<!-- Replace this "section" tag with the contents of the YouTube video list -->
	<section>
	<h1>AI Class playlist extractor</h1>
	<p>
	I use this jQuery/JavaScript script to extract a list of video Ids that can be pasted
	into a python script which will create the youtube playlist. You have to paste some HTML
	to scrape into this document (instructions below), then copy/paste the ID text to
	the python script.
	</p>
	<h2>How to use</h2>
	<ol>
	<li>
	Change the variable "unitName" at the top of the JavaScript to the
	unit (or homework) you want to extract (eg, "Unit 7").
	</li>
	<li>
	Replace the body of this HTML document with the HTML from the
	<a href="http://www.youtube.com/user/knowitvideos#g/u">knowitvideos</a> list.
	<ol>
	<li>
	To generate the list you need to click the "Load more" button until the videos
	you are interested in are displayed in the scrolling window.
	</li>
	<li>
	Then, you need to extract the HTML from the page: In Chrome you right-click
	and "inspect element" - then find inspect the nodes until you find one that
	has all of the videos as children elements (like, the "scrollbox-content" div).
	</li>
	<li>
	In the inspector, choose "Copy as HTML" and paste the result into the body of this
	HTML document (overwrite these stupid instructions)
	</li>
	</ol>
	</li>
	<li>
	Refresh the page - it should find any matches on your search string. These can then
	be pasted into the python script.
	</li>
	</ol>
	</section>
	</body>
	</html>
	import gdata.youtube
	import gdata.youtube.service
	import time

	yt_service = gdata.youtube.service.YouTubeService()
	yt_service.ssl = True

	yt_service = gdata.youtube.service.YouTubeService()
	yt_service.email = 'your@youtube_email.com'
	yt_service.password = 'password'
	yt_service.client_id = 'Mr Speaker Playlist Importer'

	yt_service.source = yt_service.client_id
	yt_service.developer_key = 'Y0uR_GdaTa_D3V3l0pEr_K3y'

	yt_service.ProgrammaticLogin()

	playlist = yt_service.AddPlaylist('AI Class Unit 7', 'AI Class unit 7 videos - including explanations')

	ids = [
	"pszEzBql4bw", # Unit 7 1 Introduction
	"_VjyktjNMoM", # Unit 7 2 Propositional Logic
	"eOp4UJl0ZIA", # Unit 7 2a Truth Tables
	"4HWzU7RhfZE", # Unit 7 2b Answer
	"ae_9TnTNPU0", # Unit 7 2c Question
	"vGfOrh8ERXo", # Unit 7 2d Answer
	"DDKhgqEWBps", # Unit 7 2e Question
	"pxGxSt58kg0", # Unit 7 2f Answer
	"nGZ2-EZnSh4", # Unit 7 2g Terminology
	"WOYA5kQ_6gI", # Unit 7 2h Answer
	"WQ7-B4H6-aE", # Unit 7 2i Propositional Logic Limitations
	"hFzVZzMPy8Q", # Unit 7 3 First Order Logic
	"TZ8iD-Rofk8", # Unit 7 3a Models
	"Th_wM93aF94", # Unit 7 3b Syntax
	"nkRYz5Omcr0", # Unit 7 3c Vacuum World
	"JcQrAin3_V8", # Unit 7 3d Question
	"vlbyPKhayiE", # Unit 7 3e Answer
	"upyRNIh1LyE", # Unit 7 3f Question
	"PY9d8qJ4BSY" # Unit 7 3g Answer
	]

	if isinstance(playlist, gdata.youtube.YouTubePlaylistEntry):
	print 'New playlist added:' + playlist.id.text
	playlist_id = playlist.id.text.split("/")[-1]
	playlist_uri = "http://gdata.youtube.com/feeds/api/playlists/" + playlist_id

	for vid_id in ids:
	print "Adding " + vid_id
	playlistEntry = yt_service.AddPlaylistVideoEntryToPlaylist(playlist_uri, vid_id)
	if isinstance(playlistEntry, gdata.youtube.YouTubePlaylistVideoEntry):
	print 'Video added'
	time.sleep(5)