title: PYTHON: ImportError: cannot import name 'ewma'
body: <p>I got the following errors when importing ewma from pandas. Any help would be appreciated. </p>
  
  <p>C:\Users\wxie>python</p>
  
  <p>Python 3.6.5 |Anaconda, Inc.| (default, Mar 29 2018, 13:32:41) [MSC v.1900 64 bit (AMD64)] on win32</p>
  
  <p>Type "help", "copyright", "credits" or "license" for more information.</p>
  
  <blockquote>
    <p>import pandas</p>
    
    <p>print(pandas)</p>
    
    <blockquote>
      <p>module 'pandas' from 'C:\Users\wxie\Anaconda3\envs\AI\lib\site-packages\pandas\__init__.py'></p>
    </blockquote>
    
    <p>print(pandas.ewma)</p>
    
    <blockquote>
      <p>Traceback (most recent call last):</p>
      
      <p>File "", line 1, in </p>
      
      <p>AttributeError: module 'pandas' has no attribute 'ewma'</p>
    </blockquote>
    
    <p>print(pandas.<strong>version</strong>)</p>
    
    <blockquote>
      <p>0.23.1</p>
    </blockquote>
  </blockquote>