struct is saving 4 bytes instead of 2

[TonyB]

Using UBUNTU python 2.4.3 I'm using struct to save a variable to a
file.  My goal is to save it as a 2 byte signed integer.  Its being
saved using:

f.write(struct.pack('h',thevariable))

When I inspect the file with a hex editor it show that the variable is
being saved as 4 bytes.  How can I make it save the value as 2 bytes?

Tony

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Re: struct is saving 4 bytes instead of 2

[TonyB]

On Sep 12, 6:45 pm, Bjoern Schliessmann  wrote:
> TonyB wrote:
> > When I inspect the file with a hex editor it show that the
> > variable is being saved as 4 bytes.  How can I make it save the
> > value as 2 bytes?
>
> Use an aligment specifier in the format string (you want "standard"
> alignment). See:
>
> http://docs.python.org/lib/module-struct.html
>
> Regards,
>
> Björn
>
> --
> BOFH excuse #428:
>
> Firmware update in the coffee machine

Björn,

I tried

f.write(struct.pack('=h',thevariable))

and it works.  Many thanks,
Tony



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