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Consider the following:
import ctypes
class struct1( ctypes.Structure ):
 _pack_ = 1
 _fields_ = [
 ( "first", ctypes.c_uint8, 1 ),
 ( "second", ctypes.c_uint8, 1 ),
 ( "third", ctypes.c_uint8, 1 ),
 ( "fourth", ctypes.c_uint8, 1 ),
 ( "fifth", ctypes.c_uint8, 1 ),
 ( "pad", ctypes.c_uint16, 11 ),
 ]
 
s1 = struct1()
print ctypes.sizeof( s1 )
class struct2( ctypes.Structure ):
 _pack_ = 1
 _fields_ = [
 ( "first", ctypes.c_uint16, 1 ),
 ( "second", ctypes.c_uint16, 1 ),
 ( "third", ctypes.c_uint16, 1 ),
 ( "fourth", ctypes.c_uint16, 1 ),
 ( "fifth", ctypes.c_uint16, 1 ),
 ( "pad", ctypes.c_uint16, 11 ),
 ]
 
s2 = struct2()
print ctypes.sizeof( s2 )
The output is:
3
2
I'm generating python code from real c code. The compiler I'm using for the real c code packs both of these structures into two bytes. I need a way to make the first example work in python like the compiler without having to modify the source code.
Is this possible?