ctypes and byte order

[Jean-Michel Pichavant]

----- Original Message -----
> From: "Peter Otten" <__peter__ at web.de>
> becomes
> 
> $ cat be2.py
> import ctypes, sys
> 
> iarray_be = ctypes.c_uint32.__ctype_be__*5
> 
> class Foo_be(ctypes.BigEndianStructure):
>         _fields_ = [('bar', iarray_be)]
> 
> print sys.version
> f_be = Foo_be((0,1,2,3,0x11223344))
> print hex(f_be.bar[4])
> 
> $ python be2.py
> 2.7.6 (default, Mar 22 2014, 22:59:56)
> [GCC 4.8.2]
> 0x11223344L
> 
> which might do what you want.

Brilliant !

I've tested it and it yields the exact same results (binary file content wise) than my "workaround" structure.
But that's way better since my actual structure is more complex and arrays will be required.

Though I'm slightly puzzled by the ctypes author(s) choice, this is not documented and requires to peek into the source code. Dunder attributes are rarely part of an interface.

Anyway, thanks for your help !

JM



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