Raymond Hettinger <raymond.hettinger@gmail.com> added the comment:

The function literal_eval is not safe anymore as the constructor can be intercepted

"Safe" means safe from user input to literal_eval(). If a person can already write arbitrary code that redefines a builtin, then they can already do anything they want. ---------- _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue39158> _______________________________________