I would like to be able to pass a value None for the typename argument of Cursor.var(). However cx_Oracle raises the following exception in this case:

DatabaseError: DPI-1046: parameter name cannot be a NULL pointer

I would have expected this to behave exactly like when typename wasn't passed at all.

This means that currenly I have to do the following:

if typename is None:
    var = cursor.var(t)
else:
    var = cursor.var(t, typename=typename)

which is inelegant.