PyPyODBC - A Pure Python ODBC module by ctypes
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One pure Python script, runs on CPython / IronPython / PyPy , Version 2.4 / 2.5 / 2.6 / 2.7 / 3.2 / 3.3, Win / Linux , 32 / 64 bit.
Almost totally same usage as pyodbc ( can be seen as a re-implementation of pyodbc in pure Python ).
Simple - the whole module is implemented in a single python script with less than 3000 lines.