Kattis online judge command line tool written in Python. Runs both in Python 2 and in Python 3.
Before running the submission client, you need to download a configuration file. This file includes a secret personal token that allows you to log in. It should be placed in your home directory, or in the same directory as submit.py, and be called .kattisrc.
The easiest way to use the client is if you have named your source code to problemid.suffix, where suffix is something suitable for the language (e.g., .java for Java, .c for C, .cc or .cpp for C++, .py for Python, .cs for C#, .go for Go, and so on...).
Let's assume you're solving the problem Hello World! (with problem id hello) and that your java solution is in the file Hello.java. Then you can simply run submit.py Hello.java, and the client will make the correct guesses. You will always be prompted before a submission is sent.
Note: If you get an error message like this: ModuleNotFoundError: No module named 'requests' when you run submit.py it's because the module 'requests' isn't installed. To install the module, check out this StackOverflow answer.
The submit client can handle multiple files in a submission. For such submissions, the filename and suffix of the first file listed on the command line is the basis of the guesses. It is ok to list a file multiple times, e.g., submit.py Hello.java *.java will work as intended.
In case the client guesses wrong, you can correct it by specifying a command line option. Running submit.py -h will list all options. The options are:
-p <problem_id>: overrides problem guess-m <mainclass>: overrides mainclass guess-l <language>: overrides language guess-f: forces submission (i.e., no prompt)