old_contents: #!/usr/bin/env python
  
  from pcaspy import Driver, SimpleServer
  import time
  
  prefix = 'MTEST:'
  pvdb = {
      'RAND' : {
          'prec' : 3,
      },
  }
  
  class myDriver(Driver):
      def  __init__(self):
          super(myDriver, self).__init__()
  
  if __name__ == '__main__':
      server = SimpleServer()
      server.createPV(prefix, pvdb)
      driver = myDriver()
  
      # process CA transactions
      while True:
          server.process(0.1)
  
new_contents: #!/usr/bin/env python
  
  from pcaspy import Driver, SimpleServer
  
  prefix = 'MTEST:'
  pvdb = {
      'RAND' : {
          'prec' : 3,
      },
  }
  
  class myDriver(Driver):
      def  __init__(self):
          super(myDriver, self).__init__()
  
  if __name__ == '__main__':
      server = SimpleServer()
      server.createPV(prefix, pvdb)
      driver = myDriver()
  
      # process CA transactions
      while True:
          server.process(0.1)
  
subject: remove unused imports