os.write and file descriptor
grante at visi.com
Tue Feb 4 23:15:12 CET 2003
In article <mailman.1044394889.16825.python-list at python.org>, Inyeol Lee wrote:
> I'm writing a program which writes to file descriptor 3.
> I've tried os.write() but it generates exception;
>>>> import os
>>>> os.write(3, "hello")
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> OSError: [Errno 9] Bad file number
What happens if you use 1 or 2 instead of 3?
Why do you think that 3 should be valid?
> I've also tried equivalent C code, and it works fine;
It doesn't for me:
char s = "hello, world\n";
n = write(3, s, strlen(s));
if (n != strlen(s))
write: Bad file descriptor
> Is the usage of os.write() different from C? Am I missing
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