I am trying to reproduce a code from a scientific publication which uses Python 2: https://github.com/TeamErlich/dna-fountain

The code is based on Python 2 so I had to change my environment to Python 2 from Python 3. Anyways, when I ran the code I realized that Python is not able to import DNAFountain from fountain, although I successfully installed it with pip install fountain. I constantly receive this error message:

    File "encode.py", line 9, in <module>
    from fountain import DNAFountain
ImportError: cannot import name DNAFountain

Does anybody know why my code is not able to import DNAFountain?