title: ModuleNotFoundError: No module named 'numpy.core._multiarray_umath' (While installing TensorFlow)
body: <p>I am following this tutorial to install TensorFlow(<a href="https://www.tensorflow.org/install/pip" rel="noreferrer">https://www.tensorflow.org/install/pip</a>), but in the last command:</p>
  
  <pre><code>python -c "import tensorflow as tf; tf.enable_eager_execution(); print(tf.reduce_sum(tf.random_normal([1000, 1000])))"
  </code></pre>
  
  <p>I get this result:</p>
  
  <pre><code>ModuleNotFoundError: No module named 'numpy.core._multiarray_umath'
  ImportError: numpy.core.multiarray failed to import
  
  The above exception was the direct cause of the following exception:
  
  Traceback (most recent call last):
    File "&lt;frozen importlib._bootstrap&gt;", line 980, in _find_and_load
  SystemError: &lt;class '_frozen_importlib._ModuleLockManager'&gt; returned a result with an error set
  ImportError: numpy.core._multiarray_umath failed to import
  ImportError: numpy.core.umath failed to import
  2019-02-16 12:56:50.178364: F tensorflow/python/lib/core/bfloat16.cc:675] Check failed: PyBfloat16_Type.tp_base != nullptr
  </code></pre>
  
  <p>I have already installed <code>numpy</code> as you can see:</p>
  
  <pre><code>pip3 install numpy
  Requirement already satisfied: numpy in c:\programdata\anaconda3\lib\site-packages (1.15.4)
  </code></pre>
  
  <p>So why do I get this error message and how can I fix it on Windows 10?</p>