code: def _ip2db(self, ip):
          '''
          adds an IP address to the IP database and returns the obfuscated entry, or returns the
          existing obfuscated IP entry
          FORMAT:
          {$obfuscated_ip: $original_ip,}
          '''
  
          ip_num = self._ip2int(ip)
          ip_found = False
          db = self.ip_db
          for k,v in db.items():
              if v == ip_num:
                  ret_ip = self._int2ip(k)
                  ip_found = True
          if ip_found:                #the entry already existed
              return ret_ip
          else:                       #the entry did not already exist
              if len(self.ip_db) > 0:
                  new_ip = max(db.keys()) + 1
              else:
                  new_ip = self._ip2int(self.start_ip)
              db[new_ip] = ip_num
  
              return self._int2ip(new_ipf _ip2db(self, ip):
          '''
          adds an IP address to the IP database and returns the obfuscated entry, or returns the
          existing obfuscated IP entry
          FORMAT:
          {$obfuscated_ip: $original_ip,}
          '''
  
          ip_num = self._ip2int(ip)
          ip_found = False
          db = self.ip_db
          for k,v in db.items():
              if v == ip_num:
                  ret_ip = self._int2ip(k)
                  ip_found = True
          if ip_found:                #the entry already existed
              return ret_ip
          else:                       #the entry did not already exist
              if len(self.ip_db) > 0:
                  new_ip = max(db.keys()) + 1
              else:
                  new_ip = self._ip2int(self.start_ip)
              db[new_ip] = ip_num
  
              return self._int2ip(new_ip)
docs: adds an IP address to the IP database and returns the obfuscated entry, or returns the
          existing obfuscated IP entry
          FORMAT:
          {$obfuscated_ip: $original_ip,}