Python计算文件MD5值

 import hashlib
 def fileMD5(filename):
     m = hashlib.md5()    #md5计算
     #m = hashlib.sha1()   #sha1计算
     #m = hashlib.sha224()   #sha224计算
     #m = hashlib.sha256()    #sha256计算
     #m = hashlib.sha384()    #sha384计算
     #m = hashlib.sha512()    #sha512计算
     #
     with open(filename) as f:
         while True:
             data = f.read(4096)
             if len(data) == 0:
                 break
             m.update(data)
     return m.hexdigest()
 if __name__ == '__main__':
     fileMD5('xxxxx.xxx')