     for line in file:         if re.match(initial_pattern, line):             print file.next()             print file.next()             print file.next()              volume_line = file.next()             print volume_line             aux = volume_line.split()             each_volume = aux[0]             print each_volume             VOLUMES.append(each_volume)          if re.match(middle_pattern, line):             print line              print file.next()             parameters_line = file.next()             aux = parameters_line.split()             p0 = aux[0]             p0 = aux[0]             p0 = aux[0]             p0 = aux[0]             p0 = aux[0]             p0 = aux[0] #               print p0             print p0              P0.append(p0)             P0.append(p0)              print file.next()             print file.next()             print file.next()             print file.next()              