title: cannot import name 'open' from 'smart_open'
body: <p>I was doing this and got this error :</p>
  
  <pre><code>from gensim.models import Word2Vec
  
  ImportError: cannot import name 'open' from 'smart_open' (C:\ProgramData\Anaconda3\lib\site-packages\smart_open\__init__.py)
  </code></pre>
  
  <p>Then I did this :</p>
  
  <pre><code>import smart_open
  dir(smart_open)
  
  ['BZ2File','BytesIO','DEFAULT_ERRORS','IS_PY2','P','PATHLIB_SUPPORT','SSLError','SYSTEM_ENCODING','Uri','__builtins__','__cached__','__doc__','__file__','__loader__','__name__','__package__','__path__','__spec__','boto','codecs','collections','gzip','hdfs','http','importlib','io','logger','logging','os','pathlib','pathlib_module','requests','s3','s3_iter_bucket','six','smart_open','smart_open_hdfs','smart_open_http','smart_open_lib','smart_open_s3','smart_open_webhdfs','sys','urlparse','urlsplit','warnings','webhdfs']
  </code></pre>
  
  <p>As you can see there is no 'open' in it so how should I solve this. I tried to install different versions
  and I upgraded all version too.</p>