initilize a memory zone in python

Mug exallion.long at gmail.com
Sun Aug 30 23:59:50 CEST 2009


On Aug 30, 8:58 pm, "Diez B. Roggisch" <de... at nospam.web.de> wrote:
> Mug schrieb:
>
> > hello, i'm new in python, i used to program in C,
> > i have a small problem, i tryed to do some serial port things
> > manipulation
> > with python.
> > i have something like:
>
> > import sys,termios
>
> > fd = sys.stdin.fileno()
> > term_conf=termios.tcgetattr(fd);
>
> > now i want to modify the actuall values in term_conf  zone to zero
> > i don't see how to do it,
> > in C we can do : bzero(&term_conf,sizeof(struct termios));
> > i want to know if it exist a similar function in python, thanks
>
> In python you don't modify memory like that.
>
> For the above function, you pass a value as the one you got to
> tcgetattr, with values modified as you desire them.
i tryed
print term_conf
and i saw that the term_conf is actually represent with an array in
python:

zsh/3 4201 [1] % python test.py
[27906, 5, 1215, 35387, 15, 15, ['\x03', '\x1c', '\x7f', '\x15',
'\x04', '\x00', '\x01', '\xff', '\x11', '\x13', '\x1a', '\xff',
'\x12', '\x0f', '\x17', '\x16', '\xff', '\x00', '\x00', '\x00',
'\x00', '\x00', '\x00', '\x00', '\x00', '\x00', '\x00', '\x00',
'\x00', '\x00', '\x00', '\x00']]

it's a array of 7 elements, with the seventh element it self a array,
so in order to initialize them to zero, there's no other way than
modify them
one by one in a loop? is there a fonction like "memset" or "bzero" in
python?

>
> Diez




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