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  1. A traceback in Python is a report that provides a detailed account of the function calls made in your code at a specific point, usually when an exception occurs. It helps you diagnose and fix the reason for the exception by showing the sequence of function calls that led to the error.

    Structure of a Traceback

    A typical traceback includes:

    • Traceback header: Indicates the most recent call last.

    • File and line number: Shows where the error occurred.

    • Code line: The specific line of code that caused the error.

    • Exception type and message: Describes the type of error and relevant information.

    For example:

    Traceback (most recent call last):
    File "example.py", line 4, in <module>
    greet('Chad')
    File "example.py", line 2, in greet
    print('Hello, ' + someon)
    NameError: name 'someon' is not defined
    Copied!

    In this example, the error is a NameError indicating that the variable someon is not defined.

    Using the Traceback Module

    Python's traceback module provides functions to extract, format, and print stack traces. Here are some useful functions:

    Catch and print full Python exception traceback without halting/exiting ...

    Learn how to catch and log exceptions without exiting the program, using traceback module or sys.exc_info(). See examples, answers and comments from P

    Stack Overflow
  1. traceback — Print or retrieve a stack traceback — Python …

    1 day ago · Learn how to use the traceback module to print or retrieve stack traces of Python programs. See the functions, classes and methods for formatting, …

  2. Catch and print full Python exception traceback without halting/exiting ...

    Learn how to catch and log exceptions without exiting the program, using traceback module or sys.exc_info(). See examples, answers and comments from Python experts and users.

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      Code sample

      try:
        do_stuff()
      except Exception:
        print(traceback.format_exc())
        print(sys.exc_info()[0])...
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