Hint for Deserialization.py

Only a week left until the 7x7 Secure Programming Game challenge ends!
Don’t miss this chance to skill up on your secure programming

For those challenging Deserialization.py here is a hint:

Understand how Python pickle works and can get exploited: https://intoli.com/blog/dangerous-pickles/

The Holiday Game ends on the 31st of January, so take this opportunity to wrap up the challenges!