PYTHONHISTORY Environment Variable Null

A subject modifies the PYTHONHISTORY system environment variable used to designate the .python_history file location to equal /dev/null, resulting in it not being written to disk, denying access to this artifact for investigators.

This can be achieved on a per-session basis using the command PYTHONHISTORY=/dev/null python, or permanently by modifying a shell configuration file (such as ~/.bashrc or ~/.zshrc) to include the line export PYTHONHISTORY=/dev/null.