import webuntis

s = webuntis.Session(
    username='api',
    password='api',
    server='webuntis.grupet.at:8080',
    school='demo_inf'
).login()

for klasse in s.klassen():
    print(klasse.name)

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pip install webuntis

A virtualenv is recommended:

$ pip install -r dev_requirements.txt

$ pytest

For the single testsuites and their descriptions, look at the docstrings of the modules in webuntis.tests.