sjudge is a client-side programming judge made for use as a teaching tool.
It is programmed in pure Python and designed to be as simple and robust as possible.
The differences between sjudge and the many available online judges is that sjudge is designed for small classroom
use and the simplicity for a teacher to make their modifications if they so desire.
sjudge is a "programming judge", which means that it is a tool used to test programs to see if they work as expected.
However, contrary to most other judges, sjudge is locally run which results in a simpler design.
Along with it also comes with a set of advantages and disadvantages:
| Advantages | Disadvantages |
|---|---|
| Simple design for easy configurability. | A program's performance will vary depending on the computer. |
| No fear of students trying to undermine your machine. | The test cases are viewable by the students. |
Another method of utilizing sjudge is to use it to mark tests.
For example, one could pose a set of problems to the students, save their solutions, then run sjudge with a script to
determine the results of the test.
One downside of this method is that students' solutions would need to be run on your machine, however, that can be
easily overcome by creating a new user with no special permissions with which to run the marking script.
| Operating Systems | Python Versions |
|---|---|
| Ubuntu 18.04 LTS (Bionic Beaver) | Python 3.7.x |
| Ubuntu 20.04 LTS (Focal Fossa) | Python 3.8.x |
| Windows 10 |
sjudge depends on the Python packages and versions listed in requirements.txt; use the following command to install them:
pip3 install -r requirements.txtsjudge needs a public readable directory to store all the exercises.
Edit DEFAULT_EXERCISES in src/main.py to point to the full path of that directory.
To have the students run sjudge, place it in a directory to which they have read access (usually /usr/local/sbin/ on linux) and instruct them to add it to their PATH (if needed).
If hiding the location of the exercises is desired, you can compile sjudge into an executable with pyinstaller.
sjudge comes with a very minimal set of exercises.
To add more, look at the template files located in exercises/ for guidance:
exercises/_template.txtis the template of an exercise description.exercises/_template.pyis the template of a test case generation script.
After the .txt (exercise description) and .py (test case generation) scripts have been created (both bearing the same name: the name of the new exercise), run the .py file to generate the test cases.
The new exercise name should now be listed when you run python3 main.py --list_exercises.
sjudge is licensed under the GNU General Public License v3.0.