[Michael Hudson]
> ...
> (1) Doesn't the Python fileno() method issue leave you open to
> ridiculous fileno() methods that mutate the list passed in to
> select()?
Yes, but that's par for the course, and selectmodule is suitably paranoid
about it (unfortunately, this is *so* common in the implementation that it's
rarely mentioned in comments -- so there's a real danger of "simplifying"
seemingly overly-elaborate code into creating a hole). list2set() is
unusual in letting PyList_GetItem catch it, though:
int len = PyList_Size(list);
...
for (i = 0; i < len; i++) {
SOCKET v;
/* any intervening fileno() calls could decr this refcnt */
if (!(o = PyList_GetItem(list, i)))
return -1;
Py_INCREF(o);
It's more common to see
for (i = 0; i < PyList_Size(list); i++) {
i.e. to recompute the list length on each trip, and so silently ignore
length-changing mutations.
> (2) AIUI,
New one on me!
at-least-as-i-understand-it<wink>-ly y'rs - tim
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