When changes take effect.
WHY A RESTART IS NEEDED
The application runs as a persistent process holding your code in memory.
WHEN TO RESTART
After changing code After installing or updating dependencies After changing environment variables After changing configuration
HOW TO RESTART
Through the Python application interface in cPanel.
WHAT HAPPENS DURING A RESTART
Brief unavailability while the process starts again.
WHAT TO CHECK AFTERWARDS
That it started cleanly, in the log That the application responds
WHAT IF IT DOES NOT START
The log states why.
Read it before changing anything else.
COMMON CAUSES OF A FAILED START
A syntax error in the code A missing dependency A missing environment variable An incorrect entry point
WHAT TO DO
Fix the specific cause named.
WHAT NOT TO DO
Restart repeatedly hoping it resolves Change several things at once
WHAT TO BUILD AS A HABIT
Check the log after every restart.