code: def run(self, pcap):
          
          proc = Popen(self._snort_cmd(pcap), stdout=PIPE,
                       stderr=PIPE, universal_newlines=True)
          stdout, stderr = proc.communicate()
          if proc.returncode != 0:
              raise Exception("\n".join(["Execution failed return code: {0}" \
                                  .format(proc.returncode), stderr or ""]))
  
          return (parse_version(stderr),
                  [ x for x in parse_alert(stdout) ])
docs: Runs snort against the supplied pcap.
  
          :param pcap: Filepath to pcap file to scan
          :returns: tuple of version, list of alerts