traceback — Exceptions and Stack Traces — PyMOTW 3
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The traceback module works with the call stack to produce error messages. A traceback is a stack trace from the point of an exception handler down the call chain to the point where the exception was raised. Tracebacks also can be accessed from the current call stack up from the point of a call (and without the context of an error), which is useful for finding out the paths being followed into a function.
This post is part of the Python Module of the Week series for Python 3. See PyMOTW.com for more articles from the series.