What steps do you take when you discover an error in your project?

When I discover an error in my Python project, I usually follow these steps:

1. Reproduce the error — try to understand how and under what conditions it occurs.
2. Analyze the traceback and error messages — study the traceback to locate the problem.
3. Check the code — look at the code section related to the error, searching for logical or syntactical issues.
4. Add logs or debug — if necessary, insert print statements or use a debugger (like pdb) to trace variable values and execution flow.
5. Fix the error — make changes to the code to eliminate the cause.
6. Test — verify that the error is truly fixed and no new issues have appeared.
7. Refactor and document — if needed, improve the code and add comments.

Example of using pdb for debugging:

import pdb

def divide(a, b):
    pdb.set_trace()  # breakpoint
    return a / b

print(divide(10, 0))

This helps understand why the error occurs (for example, division by zero) and how to avoid it.