code: def init(self):
          
          # some modules might need to be imported "on the other side of the fork"
          # .. but the, when importing this module, the import is not tested
          #
          # 
          # from openalpr import Alpr
          from valkka.mvision.alpr.openalpr_fix import Alpr
          self.movement = MovementDetector()
          self.alpr = Alpr(self.country, self.conf_file, self.runtime_data)
          if not self.alpr.is_loaded():
              self.alpr = None
              return
          self.alpr.set_top_n(self.top_n)
          self.reset()
          
          """
          # test in ipython:
          from valkka.mvision.alpr.openalpr_fix import Alpr
          country="eu"
          conf_file="/usr/share/openalpr/config/openalpr.defaults.conf"
          runtime_data="/usr/share/openalpr/runtime_data"
          a = Alpr(country, conf_file, runtime_data)
          a.is_loaded()        
          """
docs: Init alpr
          
          The LicensePlateDetector object gets instantiated in the multiprocess, so the library is imported in the multiprocess (i.e. "other side of the fork") as well