A LaTeX comment identified the 6 os.O_XXX constants the docs claimed
are available on Windows but aren't. The bug report listed the same 6.
Split these non-Windows constants into a different table with a possibly
correct "Availability:" claim.
- point out the importance of reassigning data members before
assigning thier values
- correct my missconception about return values from visitprocs. Sigh.
- mention the labor saving Py_VISIT and Py_CLEAR macros.
the documented behavior: the function passed to the onerror()
handler can now also be os.listdir.
[I could've sworn I checked this in, but apparently I didn't, or it
got lost???]
expected to write their own. A NULL "object" must not be passed to
the visit callback. A non-zero return from a visit proc isn't
necessarily an error return (and it doesn't matter to the tp_traverse
code *what* it might signify, their only job is to return it).
URLs will seemingly succeed to read a URL that points to a file whose
permissions you do not have to read.
Backport candidate once everyone agrees with the wording.
I don't agree it had a bug (see the report), so this is *not* a candidate
for backporting, but the docs were confusing and the Queue implementation
was old enough to vote.
Rewrote put/put_nowait/get/get_nowait from scratch, to use a pair of
Conditions (not_full and not_empty), sharing a common mutex. The code
is 1/4 the size now, and 6.25x easier to understand. For blocking
with timeout, we also get to reuse (indirectly) the tedious timeout
code from threading.Condition. The Full and Empty exceptions raised
by non-blocking calls are now easy (instead of nearly impossible) to
explain truthfully: Full is raised if and only if the Queue truly
is full when the non-blocking put call checks the queue size, and
similarly for Empty versus non-blocking get.
What I don't know is whether the new implementation is slower (or
faster) than the old one. I don't really care. Anyone who cares
a lot is encouraged to check that.
Anthony Tuininga.
This is a derived patch, taking the opportunity to add some organization
to the now-large pile of datetime-related macros, and to factor out
tedious repeated text.
Also improved some clumsy wording in NEWS.
Patch by John J Lee
Reviewed by Jeff Epler / KBK
Doc built OK.
urlopen() may return None if no handler handles the request.
Also clarify what install_opener does.
M liburllib2.tex
* Rename "trap_enablers" to just "traps".
* Simplify names of "settraps" and "setflags" to just "traps" and "flags".
* Show "capitals" in the context representation
* Simplify the Context constructor to match its repr form so that only
the set flags and traps need to be listed.
* Representation can now be run through eval().
Improve the error message when the Decimal constructor is given a float.
The test suite no longer needs a duplicate reset_flags method.
* Map conditions to related signals.
* Make contexts unhashable.
* Eliminate used "default" attribute in exception definitions.
* Eliminate the _filterfunc in favor of a straight list.
Docs:
* Eliminate documented references to conditions that are not signals.
* Eliminate parenthetical notes such as "1/0 --> Inf" which are no
longer true with the new defaults.
