基本不太好搞。可以参考如下讨论：
http://stackoverflow.com/questions/728164/securely-erasing-password-in-memory-python
http://stackoverflow.com/questions/982682/mark-data-as-sensitive-in-python/983525#983525
http://www.ibm.com/developerworks/library/s-data.html
转载于:https://www.cnblogs.com/tuzkee/p/3243281.html
