title: No-module named pandas-datareader
body: <p>for mac, I have used </p>
  
  <pre><code>pip3 install pandas_datareader
  </code></pre>
  
  <p>and the cmd shows it is successful.</p>
  
  <p>but when I try to import pandas_datareader in jupyter,</p>
  
  <p>it shows me "No module named pandas_datareader"</p>
  
  <p>my python version is 3.6</p>
  
  <p>so what's the problem,and how could i do to fix it?</p>
  
  <p>thanks all~</p>