Course materials for www.py4e.com

The Python3 versions of the code is all in code3

If you are interested in the Python for Everybody book see the folders

• book3
• figures
• images
• code3

See the file book3/README.md for more details.

Here are the steps to set this up on localhost on a Macintosh using MAMP.

Install MAMP (or similar) using https://www.wa4e.com/install

Check out this repo into a top level folder in htdocs

cd /Applications/MAMP/htdocs
git clone https://github.com/csev/py4e.git

Go into the newly checked out folder and get a copy of Tsugi:

cd py4e
git clone https://github.com/csev/tsugi.git

Create a database in your SQL server:

CREATE DATABASE tsugi DEFAULT CHARACTER SET utf8;
GRANT ALL ON tsugi.* TO 'ltiuser'@'localhost' IDENTIFIED BY 'ltipassword';
GRANT ALL ON tsugi.* TO 'ltiuser'@'127.0.0.1' IDENTIFIED BY 'ltipassword';

Still in the tsugi folder set up config.php:

cp config-dist.php config.php

Edit the config.php file, scroll through and set up all the variables. As you scroll through the file some of the following values are the values I use on my MAMP:

$wwwroot = 'https://localhost:8888/py4e/tsugi';   // Embedded Tsugi localhost

...

$CFG->pdo = 'mysql:host=127.0.0.1;port=8889;dbname=tsugi'; // MAMP
$CFG->dbuser    = 'ltiuser';
$CFG->dbpass    = 'ltipassword';

...

$CFG->adminpw = 'short';

...

$CFG->apphome = 'https://localhost:8888/py4e';
$CFG->context_title = "Python for Everybody";
$CFG->lessons = $CFG->dirroot.'/../lessons.json';

... 

$CFG->tool_folders = array("admin", "../tools", "../mod");
$CFG->install_folder = $CFG->dirroot.'./../mod'; // Tsugi as a store

...

$CFG->servicename = 'PY4E';

(Optional) If you want to use Google Login, go to https://console.developers.google.com/apis/credentials and create an "OAuth Client ID". Make it a "Web Application", give it a name, put the following into "Authorized JavaScript Origins":

    https://localhost

And these into Authorized redirect URIs:

https://localhost/py4e/tsugi/login.php
https://localhost/py4e/tsugi/login

Note: You do not need port numbers for either of these values in your Google configuration.

Google will give you a 'client ID' and 'client secret', add them to config.php as follows:

$CFG->google_client_id = '96..snip..oogleusercontent.com';
$CFG->google_client_secret = 'R6..snip..29a';

While you are there, you could "Create credentials", select "API key", and name the key "My Google MAP API Key" and put the API key into config.php like the following:

$CFG->google_map_api_key = 'AIza..snip..9e8';

After the above configuration is done, navigate to your application:

https://localhost:8888/py4e/tsugi/

It should complain that you have not created tables and suggest you use the Admin console to do that:

https://localhost:8888/py4e/tsugi/admin

It will demand the $CFG->adminpw from config.php (above) before unlocking the admin console. Run the "Upgrade Database" option and it should create lots of tables in the database and the red warning message about bad database, should go away.

Alternately, you can create all the databases on the command line using:

cd py4e/tsugi/admin
php upgrade.php

Keep refreshing the /py4e/tsugi page until all the error messages go away. Once the error messages are gone, the main page should also have no errors.

https://localhost:8888/py4e/

Go into the database and the lti_key table, find the row with the key_key of google.com and put a value in the secret column - anything will do - just don't leave it empty or the internal LTI tools will not launch.

Next use the administrator interface to install the peer-grading tool from the github repository:

https://localhost:8888/py4e/tsugi/admin/install

Click on "Available Modules" and install https://github.com/tsugitools/peer-grade - you will need to re-run the database upgrade process to create the peer-grader tables.

Then install the "Gift Quiz" tool and re-run the database upgrade.

If you want to have access to the quiz content, please contact Chuck for access to the private py4e repository. Access will only be given to those seriously installing the software and verified as teaching the course and adopting the materials. To checkout the private repo:

cd py4e
git clone https://github.com/csev/py4e-private.git

Then add the following line to your config.php:

$CFG->giftquizzes = $CFG->dirroot.'/../py4e-private/quiz';

At this point, you will need the "quiz unlock password" (also from Chuck) and at that point, you should be able to launch and load all the quizzes (one at a time) from the repository. You need to load the quiz content for every course (context) separately. But at least you don't have to ttype them all in.

The other two LTI tools that are required are already part of the py4e repo and in py4e/tools folder.

You can always test the tools using the "App Store" at:

https://localhost:8888/py4e/tools/

This allows you to do test launches as the instructor and student in a test environment using the key '12345'.

Navigate to:

https://localhost:8888/py4e/

You should click around without logging in and see if things work.

Then log in with your Google account and the UI should change. In particular you should see 'Assignments' and in Lessons you should start seeing LTI autograders.