CODEWITHSUNDEEP
pythonctypes
user3703018
user3703018

Reputation: 53

Is there a way to assign value to a ctypes variable in general python convention?

I've defined a ctypes variable:

abc=ctypes.c_double.from_buffer(struct, STRUCT.field_1.offset)

abc represents field_1 of a ctypes structure instance struct with class definition STRUCT. Later, if I want to modify the value of abc, I have to do like this:

abc.value=1.0

which will also change the value of struct.field_1 as I expect.

Upon modifying the value of abc, however, I could have no idea what the datatype of abc is, so simply using conventional syntax

abc=1.0

will redefine abc as a normal python variable and struct.field_1 will not change accordingly. How can I change value of struct.feild_1 through abc using conventional python syntax?

Upvotes: 2

Views: 1872

Answers (1)

Mike Graham
Mike Graham

Reputation: 76693

This isn't possible -- in Python, the behavior of names (or 'variables') isn't configurable, only the behavior of objects (or 'values'). Plain old foo = rebinds a name, it doesn't rely on any object behavior to do so.

You might find http://nedbatchelder.com/text/names.html elucidating.

Upvotes: 2

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