cgitb.enable() enables stack traces in CGI scripts
doctest.testmod(module) checks for examples in docstrings
unittest.main() runs unit tests in the current module
profile.run(stmt[, filename]) Execute the statement and perform performance analysis on it; the analysis results can be saved to the file specified by the parameter filename
Py_INCREF(obj) increments the reference count of obj by 1
Py_DECREF(obj) decrements the reference count of obj by 1
PyArg_ParseTuple(args, fmt, ...) extracts positional arguments
PyArg_ParseTupleAndKeywords(args, kws, fmt, kwlist) Extract positional and keyword arguments
PyBuildValue(fmt, value) Create pyObjct from C language value