title: Import error for blpapi module
body: <p>This is my first post. I run the following: 
  Win 10
  Anaconda with Python 3.6.5
  Bloomberg Anywhere</p>
  
  <p>I am trying to use the <code>blpapi</code> (bloomberg professional API) for Python. Downloaded the Desktop API package (with C++ libraries), downloaded <code>blpapi-3.9.1-cp36-cp36m-win_amd64.whl</code> installer file and ran it succesfully. Finally I added the <code>C:\..\C++API\v3.11.6.1\bin</code> to my path in both user and environment variables (from earlier query here on stackoverflow):
  <a href="https://stackoverflow.com/questions/24317469/python-2-7-with-bloomberg-api-import-blpapi-failure">Python 2.7 with Bloomberg API import blpapi failure</a></p>
  
  <p>My error message when running <code>import blpapi</code>: </p>
  
  <pre><code>&gt;---------------------------------------------------------------------------
  &gt;ImportError                               Traceback (most recent call last)
  &gt;~\Anaconda3\lib\site-packages\blpapi\internals.py in swig_import_helper()
  &gt;     38         try:
  &gt;---&gt; 39             return importlib.import_module(mname)
  &gt;     40         except ImportError:
  &gt;
  &gt;~\Anaconda3\lib\importlib\__init__.py in import_module(name, package)
  &gt;    125             level += 1
  &gt;--&gt; 126     return _bootstrap._gcd_import(name[level:], package, level)
  &gt;    127 &gt;&gt;
  &gt;
  &gt;~\Anaconda3\lib\importlib\_bootstrap.py in _gcd_import(name, package, level)
  &gt;
  &gt;~\Anaconda3\lib\importlib\_bootstrap.py in _find_and_load(name, import_)
  &gt;
  &gt;~\Anaconda3\lib\importlib\_bootstrap.py in _find_and_load_unlocked(name, &gt;import_)
  &gt;
  &gt;~\Anaconda3\lib\importlib\_bootstrap.py in _load_unlocked(spec)
  &gt;
  &gt;~\Anaconda3\lib\importlib\_bootstrap.py in module_from_spec(spec)
  &gt;
  &gt;~\Anaconda3\lib\importlib\_bootstrap_external.py in create_module(self, spec)
  &gt;
  &gt;~\Anaconda3\lib\importlib\_bootstrap.py in _call_with_frames_removed(f, *args, &gt;**kwds)
  &gt;
  &gt;ImportError: DLL load failed: The specified module could not be found.
  &gt;
  &gt;During handling of the above exception, another exception occurred:
  &gt;
  &gt;ModuleNotFoundError                       Traceback (most recent call last)
  &gt;~\Anaconda3\lib\site-packages\blpapi\__init__.py in &lt;module&gt;()
  &gt;      3 try:
  &gt;----&gt; 4     from .internals import CorrelationId
  &gt;      5 except ImportError as error:
  &gt;
  &gt;~\Anaconda3\lib\site-packages\blpapi\internals.py in &lt;module&gt;()
  &gt;     41             return importlib.import_module('_internals')
  &gt;---&gt; 42     _internals = swig_import_helper()
  &gt;     43     del swig_import_helper
  &gt;
  &gt;~\Anaconda3\lib\site-packages\blpapi\internals.py in swig_import_helper()
  &gt;     40         except ImportError:
  &gt;---&gt; 41             return importlib.import_module('_internals')
  &gt;     42     _internals = swig_import_helper()
  &gt;
  &gt;~\Anaconda3\lib\importlib\__init__.py in import_module(name, package)
  &gt;    125             level += 1
  &gt;--&gt; 126     return _bootstrap._gcd_import(name[level:], package, level)
  &gt;    127 
  &gt;
  &gt;ModuleNotFoundError: No module named '_internals'
  &gt;
  &gt;During handling of the above exception, another exception occurred:
  &gt;
  &gt;ImportError                               Traceback (most recent call last)
  &gt;&lt;ipython-input-1-ee203a799ece&gt; in &lt;module&gt;()
  &gt;----&gt; 1 import blpapi
  &gt;
  &gt;~\Anaconda3\lib\site-packages\blpapi\__init__.py in &lt;module&gt;()
  &gt;     27 
  &gt;     28 """ % (str(error), env)
  &gt;---&gt; 29     raise ImportError(msg)
  &gt;     30 
  &gt;     31 from .abstractsession import AbstractSession
  &gt;
  &gt;ImportError: No module named '_internals'
  &gt;
  &gt;Could not open the C++ SDK library.
  &gt;
  &gt;Download and install the latest C++ SDK from:
  &gt;
  &gt;    http://www.bloomberg.com/professional/api-library
  &gt;
  &gt;If the C++ SDK is already installed, please ensure that the path to the library
  &gt;was added to PATH before entering the interpreter.
  </code></pre>
  
  <p>Does someone know what the problem might be? </p>