Getting an error to install pyemd even though I just installed it

Question

Here is the code:

from pyemd import emd

print("sentence 1:")
print(input_document_lower[0])
print("sentence 2:")
print(input_document_lower[1])
print("similarity:")
model_w2v.wmdistance(input_document_lower[0], input_document_lower[1])

Here's the error:

sentence 1:
incorrect batch number printed primary label pbn
sentence 2:
unconfirmed oos met vial washing qualification sample per 
similarity:

ImportErrorTraceback (most recent call last)
<ipython-input-201-50af089a2354> in <module>()
      4 print(input_document_lower[1])
      5 print("similarity:")
----> 6 model_w2v.wmdistance(input_document_lower[0], input_document_lower[1])

C:\ProgramData\Anaconda2\lib\site-packages\gensim\models\word2vec.pyc in wmdistance(self, document1, document2)
   1308         Refer to the documentation for `gensim.models.KeyedVectors.wmdistance`
   1309         """
-> 1310         return self.wv.wmdistance(document1, document2)
   1311 
   1312     def most_similar_cosmul(self, positive=None, negative=None, topn=10):

C:\ProgramData\Anaconda2\lib\site-packages\gensim\models\keyedvectors.pyc in wmdistance(self, document1, document2)
    386 
    387         if not PYEMD_EXT:
--> 388             raise ImportError("Please install pyemd Python package to compute WMD.")
    389 
    390         # Remove out-of-vocabulary words.

ImportError: Please install pyemd Python package to compute WMD.

It is being installed properly so I really have no clue as to what is going wrong. Have any of your encountered this?

Answer 1

I had the same error, and for me the solution was to swap:

from gensim.similarities import WmdSimilarity
from pyemd import emd

into

from pyemd import emd
from gensim.similarities import WmdSimilarity

Don't ask me why it works.