title: Importing stldecompose result in error - cannot import name '_maybe_get_pandas_wrapper_freq' from 'statsmodels.tsa.filters._utils'
body: <p>My code</p>
  
  <pre><code>!pip install stldecompose
  
  from stldecompose import decompose
  </code></pre>
  
  <p>Error Msg</p>
  
  <blockquote>
    <hr>
    
    <p>ImportError                               Traceback (most recent call last)
     in 
          2 # Install the library via PIP
          3 get_ipython().system('pip install stldecompose')
    ----> 4 from stldecompose import decompose, forecast</p>
    
    <p>~/opt/anaconda3/lib/python3.7/site-packages/stldecompose/<strong>init</strong>.py in 
    ----> 1 from .stl import decompose, forecast</p>
    
    <p>~/opt/anaconda3/lib/python3.7/site-packages/stldecompose/stl.py in 
          3 from pandas.core.nanops import nanmean as pd_nanmean
          4 from statsmodels.tsa.seasonal import DecomposeResult
    ----> 5 from statsmodels.tsa.filters._utils import _maybe_get_pandas_wrapper_freq
          6 import statsmodels.api as sm
          7 </p>
    
    <p>ImportError: cannot import name '_maybe_get_pandas_wrapper_freq' from 'statsmodels.tsa.filters._utils' (/Users/georgeng/opt/anaconda3/lib/python3.7/site-packages/statsmodels/tsa/filters/_utils.py)</p>
  </blockquote>