The dis module includes functions for working with python bytecode by “disassembling” it into a more human-readable form. Reviewing the bytecodes being executed by the interpreter is a good way to hand-tune tight loops and perform other kinds of optimizations. It is also useful for finding race conditions in multi-threaded applications, since it can be used to estimate the point in the code where thread control may switch.
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This post is part of the Python Module of the Week series for Python 3. See PyMOTW.com for more articles from the series.