Python ctypes structure keeps converting its fields -


i have ran following code:

from ctypes import *   class innerstructure(structure):     pass  innerstructure._fields_ = [     ('d', c_ulong), ]  class complexstructure(structure):     pass  complexstructure._fields_ = [     ('a', innerstructure * 2),     ('b', c_ushort * 2 * 2),     ('c', c_ulong), ]  input_structure = complexstructure()  print(type(input_structure.a)) print(type(input_structure.a[0])) print(type(input_structure.a[0].d)) print(type(input_structure.b)) print(type(input_structure.b[0])) print(type(input_structure.b[0][0])) print(type(input_structure.c)) print(type(c_ushort(1))) print(type(c_long(1)))

and i'd expect type of input_structure.a[0].d c_ulong, obtain looks in following way:

<class 'struct_utils_tests.innerstructure_array_2'> <class 'struct_utils_tests.innerstructure'> <type 'long'> <class 'struct_utils_tests.c_ushort_array_2_array_2'> <class 'struct_utils_tests.c_ushort_array_2'> <type 'int'> <type 'long'> <class 'ctypes.c_ushort'> <class 'ctypes.c_long'>

it serious problem, because cannot force member of structure of type c_* , because of cannot instance address of structure members (function addressof works ctypes types). expected behaviour or should write definition of these structures differently?

thanks in advance!


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