python traceback

Traceback is a built-in module in Python that provides a way to handle and print detailed information about an exception. It displays a stack trace, which is a list of function calls that led to the exception.

When an unhandled exception occurs in a Python program, the traceback shows the line of code where the exception occurred, as well as the functions that were called to reach that point. This information is valuable for debugging and identifying the cause of the error.

To use the traceback module, you can simply import it and call its functions. For example:

import traceback

try:
    # Code that may raise an exception
    ...
except Exception as e:
    # Print the traceback
    traceback.print_exc()

The `print_exc()` function prints the formatted traceback to the standard error stream. You can also use other functions like `format_exc()` to get the traceback as a string or `extract_tb()` to get a list of individual traceback entries.

Additionally, you can customize the traceback handling by using the `traceback` module functions within your own code. This allows you to catch exceptions, manipulate tracebacks, or perform other actions based on the traceback information.

Remember, handling exceptions and using tracebacks correctly is essential for writing robust and error-free Python programs.