python3:MD5

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import hashlib
import os


#简单的测试一个字符串的MD5值
def GetStrMd5(src):
    m = hashlib.md5()
    m.update(src.encode('UTF-8'))
    return m.hexdigest()


#大文件的MD5值
def GetFileMd5(filename):
    if not os.path.isfile(filename):
        return
    myhash = hashlib.md5()
    f = open(filename,'rb')
    while True:
        b = f.read(8096)
        if not b :
            break
        myhash.update(b)
    f.close()
    return myhash.hexdigest()