md5 加密文件

import hashlib
import os

def get_md5(file_path):
    md5 = None
    if os.path.isfile(file_path):
        f = open(file_path, 'rb')
        md5_obj = hashlib.md5()
        md5_obj.update(f.read())
        hash_code = md5_obj.hexdigest()
        f.close()
        md5 = str(hash_code).lower()
    return md5

if __name__ == "__main__":
    file_path = r'D:\\icebox_Train.zip'
    md5_1 = get_md5(file_path)
    print md5_1