title: ValueError: numpy.ufunc size changed, may indicate binary incompatibility. Expected 216 from C header, got 192 from PyObject
body: <p>In jupyter notebook I am running through this error. I am using py
  I just installed pytorch, previously it was working fine. </p>
  
  <pre class="lang-py prettyprint-override"><code>import pyodbc
  import pandas as pd
  import matplotlib.pyplot as plt
  
  import warnings
  warnings.filterwarnings('ignore')
  </code></pre>
  
  <p>When I run the above cell I got the following error:</p>
  
  <pre class="lang-py prettyprint-override"><code>---------------------------------------------------------------------------
  ValueError                                Traceback (most recent call last)
  &lt;ipython-input-2-1051f624fd0e&gt; in &lt;module&gt;()
        1 import pyodbc
  ----&gt; 2 import pandas as pd
        3 import matplotlib.pyplot as plt
        4 
        5 import warnings
  
  C:\Anaconda3\lib\site-packages\pandas\__init__.py in &lt;module&gt;()
       29 
       30 try:
  ---&gt; 31     from pandas._libs import hashtable as _hashtable, lib as _lib, tslib as _tslib
       32 except ImportError as e:  # pragma: no cover
       33     # hack but overkill to use re
  
  C:\Anaconda3\lib\site-packages\pandas\_libs\__init__.py in &lt;module&gt;()
        1 # flake8: noqa
        2 
  ----&gt; 3 from .tslibs import (
        4     NaT,
        5     NaTType,
  
  C:\Anaconda3\lib\site-packages\pandas\_libs\tslibs\__init__.py in &lt;module&gt;()
        1 # flake8: noqa
        2 
  ----&gt; 3 from .conversion import localize_pydatetime, normalize_date
        4 from .nattype import NaT, NaTType, iNaT, is_null_datetimelike
        5 from .np_datetime import OutOfBoundsDatetime
  
  __init__.pxd in init pandas._libs.tslibs.conversion()
  
  ValueError: numpy.ufunc size changed, may indicate binary incompatibility. Expected 216 from C header, got 192 from PyObject
  </code></pre>