Plus, for the last many years there&#x27;s been a big warning at the start of the Python documentation. Quoting from <a href="https:&#x2F;&#x2F;docs.python.org&#x2F;3&#x2F;library&#x2F;pickle.html?highlight=pickle#module-pickle" rel="nofollow">https:&#x2F;&#x2F;docs.python.org&#x2F;3&#x2F;library&#x2F;pickle.html?highlight=pick...</a> :<p>&gt; The pickle module is not secure against erroneous or maliciously constructed data. Never unpickle data received from an untrusted or unauthenticated source.<p>(In the 2.6 documentation, the warning was not quite at the top of the module. It moved up for the 2.7 release.)