return server error to uese

[Yebach]

Hello

What would be the best way to return server error in try, except to user 

I have multiple functions and i have try, except in each and I would like to show user in alert what the error was (only for selected functions)

my except is 

    except Exception as e:

            script.update_record(sc_status = 10)

            exc_type, exc_obj, exc_tb = sys.exc_info()

            fname = os.path.split(exc_tb.tb_frame.f_code.co_filename)[1]

            errmsg = [exc_type, fname, exc_tb.tb_lineno,e.__doc__ , e.message]

            print "errmsg ", errmsg

            print(exc_type, fname, exc_tb.tb_lineno)

            print e.__doc__

            print e.message

            return dict(status = 666, errmsg = errmsg)

any suggestions