cpython/Doc/library/debug.rst

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Debugging and Profiling
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These libraries help you with Python development: the debugger enables you to
step through code, analyze stack frames and set breakpoints etc., and the
profilers run code and give you a detailed breakdown of execution times,
allowing you to identify bottlenecks in your programs. Auditing events
provide visibility into runtime behaviors that would otherwise require
intrusive debugging or patching.

.. toctree::

   audit_events.rst
   bdb.rst
   faulthandler.rst
   pdb.rst
   profile.rst
   timeit.rst
   trace.rst
   tracemalloc.rst