title: Error compiling Cython file:word2vec_inner.pyx:1:0: 'TWE-1.gensim.models.word2vec_inner' is not a valid modu le name
body: <p>setup.py</p>
  
  <pre><code>from distutils.core import setup
  from distutils.extension import Extension
  from Cython.Build import cythonize
  import numpy
  extensions = [
      Extension("word2vec_inner", ["word2vec_inner.pyx"],
            include_dirs=[numpy.get_include()])
      ]
  setup(
      name="word2vec_inner",
      ext_modules=cythonize(extensions),
  )
  </code></pre>
  
  <p>error:</p>
  
  <pre><code>Warning: Extension name 'word2vec_inner' does not match fully qualified name
  'TWE-1.gensim.models.word2vec_inner' of 'word2vec_inner.pyx'
  Compiling word2vec_inner.pyx because it changed.
  [1/1] Cythonizing word2vec_inner.pyx
  
  Error compiling Cython file:
  ------------------------------------------------------------
  ...
  #!/usr/bin/env cython
  ^
  ------------------------------------------------------------
  
  word2vec_inner.pyx:1:0: 'TWE-1.gensim.models.word2vec_inner' is not a valid 
  module name
  Traceback (most recent call last):
    File "D:\PyCharm 2017.3\helpers\pydev\pydevd.py", line 1668, in &lt;module&gt;
      main()
    File "D:\PyCharm 2017.3\helpers\pydev\pydevd.py", line 1662, in main
      globals = debugger.run(setup['file'], None, None, is_module)
    File "D:\PyCharm 2017.3\helpers\pydev\pydevd.py", line 1072, in run
      pydev_imports.execfile(file, globals, locals)  # execute the script
    File "D:/pycharm/TWE/TWE-1/gensim/models/setup.py", line 11, in &lt;module&gt;
      ext_modules=cythonize(extensions),
    File "E:\Python27\lib\site-packages\cython-0.27.3-py2.7-
  win32.egg\Cython\Build\Dependencies.py", line 1039, in cythonize
      cythonize_one(*args)
    File "E:\Python27\lib\site-packages\cython-0.27.3-py2.7-
  win32.egg\Cython\Build\Dependencies.py", line 1161, in cythonize_one
      raise CompileError(None, pyx_file)
  Cython.Compiler.Errors.CompileError: word2vec_inner.pyx
  </code></pre>
  
  <p>I have install the Microsoft Visual C++ Compiler for Python 2.7 and cython, but it can't compile. It always appears this problem. 
  how to solve this problem? Thank you very much! </p>