title: Pytest - Error No Module Named Sqlalchemy
body: <p>I tried to import sqlalchemy to my pytest file but when I tried to run it shows this error, even though I have already installed sqlalchemy. </p>
  
  <pre><code>    new.py:1: in &lt;module&gt;
      import sqlalchemy
  E   ImportError: No module named sqlalchemy
  </code></pre>
  
  <p>my code :</p>
  
  <pre><code>import pytest
  import sqlalchemy
  </code></pre>
  
  <p>the code was just when I was importing the sqlalchemy.
  How do I fix it? Thanks in advance </p>