Python handle unexpected error and re-run app for retry counter

catch.py

from time import sleep
do_error = None

def run(retry=0):
  try:
    print(do_error[1])
  except Exception as e:

    err_type = e.__class__.__name__
    if err_type:
      retry += 1
      if retry <= 2:
        print("{}:".format(err_type), "retry in 3s")
        sleep(2)
        run(retry=retry)
        return


    print("{}, im done with u".format(err_type))

run()