In order to do programming exercises, you need to install several software packages:
- TestMyCode (TMC) client in order to download the exercises and upload your solutions
- Python 3 + several packages to test python exercises
TMC requires a fairly modern Java 8 or later to work properly. Open jdk 1.8.0_212 for example works as should all 11.x and 12.x versions. You can try to install and run tmc and update your java install if logging in with the cli fails.
Follow the instructions on the following page to install TMC client.
Note that on this course we use the command line version of TMC, not netbeans or any other IDE. So, you need to know the basics of command line use in the terminal/command prompt.
If you detest command line usage, it is possible to use Visual Studio IDE (with python) as there is also a Visual Studio plugin for TMC client.
Installing Python 3
The exercises requires Python 3 (3.5 or higher). This may be confusing as for example Macs come with preinstalled Python 2. There are many many ways to install Python 3
- Download it from the official website.
- Ubuntu/debian users can use apt-get.
- Mac users can use MacPorts if it is installed.
- Popular distribution of python, anaconda or miniconda, has its own package installation system. This distribution should work but it has not been tested. If you already have anaconda installed, we suggest that you try to install the needed packages with anaconda.
We assume from now on that the command for Python 3 is
python3 which should
be the case for mac / linux. It may be also just
python, in which case,
whenever we ask you to type
python3, just type
python. This is especially true if you are using windows.
You can see the
version of your python with
It is not a bad idea to have python reachable via PATH environment variable. This should be more-or-less automatic for mac and linux. Official Windows installer asks whether you want to have yout python in PATH (say yes).
Package installer for Python (pip) should be already installed with modern python if you installed python from python.org or using conda distribution.
If you you installed it using apt-get or port, then most likely you will need to install pip. The package name is probably
alternatively follow these instructions to install pip.
Install the following packages using pip
python3 -m pip install django selenium beautifulsoup4 requests
You need to allow your firewall software to allow python to listen and to connect to the internet.
Installing ChromeDriver and Chrome
Two pieces of software are required
- the browser Google Chrome
- a software that allows python communicate with the the browser ChromeDriver
When installing ChromeDriver you need to make sure that the driver version matches the browser version, otherwise the driver refuses to work. The browser version can be seen by going to chrome://version .
You also need to make sure that both chrome and the chromedriver can be reached via PATH environment variable, that is, you should be able to open the chromedriver and the browser via command line without specifying the exact location of the executable.
Chromedriver doesn't come with an installer. Instead it's a zipped executable. You need to unzip the package, and place the executable somewhere where the PATH can reach it.
Google Chrome has a tendency to update itself. When this happens you will need to update your chrome driver manually.
Download the script and test it with python
The script will test if the python packages are installed and uses selenium to access google.com.
Downloading the exercises
Go to a folder where you want to download the exercises, and issue command
If it asks for a server address, then your TMC client is outdated. Re-install the client.
Provide login details, and use organization slug
Download the exercises for securing software with the command
tmc download mooc-securing-software-20
NB! Do not change the name of the root directory, it should stay as
You can test the exercises locally with
tmc test and submit your solutions with
tmc help for additional commands.
You can test individual exercise by going to an exercise-specific folder, or you can test all of them at once by issuing testing commands at root.
Every exercise has automated tests. If you end up in situation where
tmc test cannot
find any test, you can locate the bug by either starting the application yourself
(if the programming exercise is django, then start the server with
or submit the exercise and see the logs on TMC website.
NB! The TMC server tests the exercises with Python 3.7. Most likely, your
Python installation will be a newer version. Make sure that you do not use
any features that were introduced after Python 3.7 such as
:= syntax. Otherwise, this may lead
to a situation where the tests are passed locally but not remotely.
You can see the error and the stacktrace by going to the TMC website.
There are no limitations for resubmissions.