NameError: name 'ratio' is not defined

[DivanshuTak]

While running the Fuzzy Wuzzy process.extract() method the following error is thrown :-

    matches = fw_process.extract(
../../.local/share/virtualenvs/proj-NKfiPrkj/lib/python3.8/site-packages/fuzzywuzzy/process.py:168: in extract
    return heapq.nlargest(limit, sl, key=lambda i: i[1]) if limit is not None else \
/usr/lib/python3.8/heapq.py:563: in nlargest
    result = [(key(elem), i, elem) for i, elem in zip(range(0, -n, -1), it)]
/usr/lib/python3.8/heapq.py:563: in <listcomp>
    result = [(key(elem), i, elem) for i, elem in zip(range(0, -n, -1), it)]
../../.local/share/virtualenvs/proj-NKfiPrkj/lib/python3.8/site-packages/fuzzywuzzy/process.py:117: in extractWithoutOrder
    score = scorer(processed_query, processed)
../../.local/share/virtualenvs/proj-NKfiPrkj/lib/python3.8/site-packages/fuzzywuzzy/fuzz.py:276: in WRatio
    base = ratio(p1, p2)
../../.local/share/virtualenvs/proj-NKfiPrkj/lib/python3.8/site-packages/fuzzywuzzy/utils.py:38: in decorator
    return func(*args, **kwargs)
../../.local/share/virtualenvs/proj-NKfiPrkj/lib/python3.8/site-packages/fuzzywuzzy/utils.py:29: in decorator
    return func(*args, **kwargs)
../../.local/share/virtualenvs/proj-NKfiPrkj/lib/python3.8/site-packages/fuzzywuzzy/utils.py:47: in decorator
    return func(*args, **kwargs)
../../.local/share/virtualenvs/proj-NKfiPrkj/lib/python3.8/site-packages/fuzzywuzzy/fuzz.py:28: in ratio
    return utils.intr(100 * m.ratio())
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <fuzzywuzzy.StringMatcher.StringMatcher object at 0x7f115ab32160>

    def ratio(self):
        if not self._ratio:
>           self._ratio = ratio(self._str1, self._str2)
E           NameError: name 'ratio' is not defined

I found that pinning the python-Levenshtein version to 0.12.2 solve the issue.

[maxbachmann]

This should be the same issue as seatgeek/thefuzz#35 and should be fixed by uninstalling python-Levenshtein/Levenshtein and installing it again.

[chrisolof]

I found that pinning the python-Levenshtein version to 0.12.2 solve the issue.

This worked for me too. Uninstalling and reinstalling python-Levenshtein didn't solve the issue on my system.

[maxbachmann]

This should be solved by running

pip uninstall Levenshtein python-Levenshtein
pip install python-Levenshtein

since this is a bug in pip in regards to updating. So it would be interesting to know, why this still fails for you even after performing these steps.