title: Python Import: import multiple modules in one file
body: <p>I have many frequently used modules such as <code>os, cv2, numpy,</code>... Every time I need to import them at the beginning of each python file. Now I want to write the <code>import</code> code into one file named <code>all_import.py</code>, and for each python file only import <code>all_import</code> to import all the modules I need.</p>
  
  <p>Is that possible to do that?</p>