Codes are not suitable for python3

First, In the download function,  tuple parameter unpacking is not supported in Python3.

Second is the print function

Third, line30 **'Unicode-objects must be encoded before hashing '**  
method:  encode('utf-8')  url[i]   
according to [https://github.com/faceteam/facescrub/issues/1#issue-537883180](url)