Dependency Issue (path & python-Levenshtein)

[lvris]

It seems that there's something wrong in dependencies.

1. Incorrect library importing. Made a pr there.
2. Missing dependency - python-Levenshtein. UserWarning: Using slow pure-python SequenceMatcher. Install python-Levenshtein to remove this warning if it's not installed. I recommend adding python-Levenshtein to dependencies.