使用Python的hashlib模块提取MD5，网上参考，觉得这个还不错，可以作为模块直接使用。

# -*- coding: utf-8 -*-    import hashlib  import sys  import osdef md5hex(word):      """ MD5加密算法，返回32位小写16进制符号 """      if isinstance(word, unicode):          word = word.encode("utf-8")      elif not isinstance(word, str):          word = str(word)      m = hashlib.md5()      m.update(word)      return m.hexdigest()     def md5sum(fname):      """ 计算文件的MD5值 """      def read_chunks(fh):          fh.seek(0)          chunk = fh.read(8096)          while chunk:              yield chunk              chunk = fh.read(8096)          else: #最后要将游标放回文件开头              fh.seek(0)      m = hashlib.md5()      if isinstance(fname, basestring) and os.path.exists(fname):          with open(fname, "rb") as fh:              for chunk in read_chunks(fh):                  m.update(chunk)      #上传的文件缓存 或 已打开的文件流      elif fname.__class__.__name__ in ["StringIO", "StringO"] or isinstance(fname, file):          for chunk in read_chunks(fname):              m.update(chunk)      else:          return ""      return m.hexdigest()if __name__ == "__main__":    print (md5hex(sys.argv[1]))    print (md5sum(sys.argv[2]))

 Linux上验证：