Reset fingerprint scanner

I’m trying to run this script to clear out the fingerprint reader’s memory, but am getting an error:

Traceback (most recent call last):
  File "/home/ryebread/Downloads/libfprint_delete_device_prints.py", line 13, in <module>
    require_version('FPrint', '2.0')
  File "/usr/lib/python3/dist-packages/gi/__init__.py", line 126, in require_version
    raise ValueError('Namespace %s not available' % namespace)
ValueError: Namespace FPrint not available

i’m not sure what it means by Namespace FPrint not available as i have fprint installed

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