title: How to execute a function in Jupyter that was defined in a different cell
body: <p>I defined a function in a Jupyter Lab cell and is working fine but if I try to execute the same function on a different cell I've got the error:</p>
  
  <p><strong>ModuleNotFoundError: No module named 'count_persistence_fail'</strong>. How can I execute a function on different cells? Thank you in advance.</p>