title: execute python file from another file
body: <p>I have a python file that has functions and classes. now I am writting another program (in another file). and I want to start the new file with running the old file (with the function and classes). I have tried using exec(path_2_oldFile.pyw) but it didn't work.</p>
  
  <p>thanks for any help
  Ariel</p>