title: Renaming a variable everywhere in Jupyter Notebook
body: <p>Is there a way to rename a variable everywhere in your current jupyter notebook file?</p>
  
  <p>I.e. let's say my notebook referencing a variable "foo" in multiple functions and locations through my script. Later I decide I want to rename this variable to "bar" for better readability...</p>
  
  <p>In xcode, you can highlight and right click to do this. Sort of a smart search/replace command.</p>
  
  <p>Would love to be able to do the same thing.</p>
  
  <p>Thanks!</p>