code: def total_memory():
      
      with file('/proc/meminfo', 'r') as f:
          for line in f:
              words = line.split()
          if words[0].upper() == 'MEMTOTAL:':
              return int(words[1]) * 1024
      raise IOError('MemTotal unknown')
docs: Returns the the amount of memory available for use.
  
          The memory is obtained from MemTotal entry in /proc/meminfo.
          
          Notes
          =====
          This function is not very useful and not very portable.