42.4. Sharing Data
The global dictionarySD is available to store private data between repeated calls to the same function. The global dictionaryGD is public data, that is available to all Python functions within a session; use with care.
Each function gets its own execution environment in the Python interpreter, so that global data and function arguments frommyfunc are not available tomyfunc2. The exception is the data in theGD dictionary, as mentioned above.