This introduces:
- A new operator // that means floor division (the kind of division
where 1/2 is 0).
- The "future division" statement ("from __future__ import division)
which changes the meaning of the / operator to implement "true
division" (where 1/2 is 0.5).
- New overloadable operators __truediv__ and __floordiv__.
- New slots in the PyNumberMethods struct for true and floor division,
new abstract APIs for them, new opcodes, and so on.
I emphasize that without the future division statement, the semantics
of / will remain unchanged until Python 3.0.
Not yet implemented are warnings (default off) when / is used with int
or long arguments.
This has been on display since 7/31 as SF patch #443474.
Flames to /dev/null.
Also fix another bug caught by pychecker-- HTTPError() raised when
redirect limit exceed did not pass an fp object. Had to change method
to keep fp object around until it's certain that the error won't be
raised.
Remove useless line in do_proxy().
attribute values. Just using escape() can (and always has) led to broken
XML being generated. This makes sure it always produces the right thing.
This actually closes SF bug #440351.
break old code (in extreme cases). See SF bug #448153.
Add a new subclass IterableUserDict that has the __iter__ method.
Note that for new projects, unless backwards compatibility with
pre-2.2 Python is required, subclassing 'dictionary' is recommended;
UserDict might become deprecated.
__all__, to indicate these are implied as part of the public API.
IDLE's "Check Module" command uses this, and it broke once already
because the reset_globals() and tokeneater() functions were deleted
when Neil converted this to using the generator API of tokenizer.
(See SF bug #448835.)
starting the test suite proper. If _socket fails to build, that will
make this test fail with an ImportError -- handled by the test harness
as "no such module _socket" -- instead of an AttributeError deep in
CGIHTTPServer.
names of the test methods were not changed from the Zope-standard "check"
names to the Python-standard "test_" names, so the tests were not actually
being run.
Added test of hexadecimal character references as a regression check for
SF bug #445196.
Fix handling of hexadecimal character references (legal in XHTML) so that
they are properly interpreted as character references.
This fixes SF bug #445196.
If pyexpat is not available and more than one attempt is made to load
an expat-based xml parser, an empty xml.parser.expat module will be
created. This empty module will confuse xml.sax.expatreader into
thinking that pyexpat is available.
The ugly fix is to verify that the expat module actually defines the
names that are imported from pyexpat.
d:/whatever instead of /whatever. While I'm afraid changing isabs()
to be *consistent* with this would break lots of code, it makes
best sense for join() to do it this way. Thanks to Alex Martelli for
pushing back on this one!
to the current Python interpreter (ie. the one used for
building/installation), even (especially!) if "/usr/bin/env" appears in
the #! line.
Rationale: installing scripts with "#!/usr/bin/env python" is asking for
trouble, because
1) it might pick the wrong interpreter (not the one used to
build/install the script)
2) it doesn't work on all platforms (try it on IRIX 5, or on Linux
with command-line options for python)
3) "env" might not be in /usr/bin
+ test_quopri.py relied on significant trailing spaces. Fixed.
+ test_dircache.py (still) doesn't work on Windows (directory mtime on
Windows doesn't work like it does on Unix).
is complete: recompute _dirs_in_sys_path each time these functions are
entered after module initialization is complete, and reset before
returning to user code.
This closes SF patch #442983.
Fix showstopper SF bug #442983: use of site.addsitedir() was broken
because it references the global dirs_in_sys_path which is deleted.
The fix avoids deleting that global.
(My email through python.org or digicool.com is non-functional at the
moment; use gvanrossum@home.com to reach me.)
This is a Windows-specific glitch that's really due to that, e.g.,
ntpath.join("c:", "/abc") returned "/abc" instead of "c:/abc". Made
join smarter.
Bugfix candidate.
Reorganize so the initialization sequences does not bite us in the foot.
(There is no good reason to discard classes that clients may want to
subclass.)
****************
PyShell: Added functionality:
usage: idle.py [-c command] [-d] [-i] [-r script] [-s] [-t title] [arg] ...
idle file(s) (without options) edit the file(s)
-c cmd run the command in a shell
-d enable the debugger
-i open an interactive shell
-i file(s) open a shell and also an editor window for each file
-r script run a file as a script in a shell
-s run $IDLESTARTUP or $PYTHONSTARTUP before anything else
-t title set title of shell window
Remaining arguments are applied to the command (-c) or script (-r).
******************
idles: Removed the idles script, not needed
******************
idle: Removed the IdleConf references, not required anymore
was already correctly parsed (contrary to a comment in Mailman).
test_rfc2822_phrases(): RFC 2822 now requires that we allow `.' in
phrases, which means we must accept dots in unquoted realname parts.
Add a test to check the change in rfc822.py 1.58.
now allowed in unquoted RealName areas (technically, they are defined
as "obsolete syntax" we MUST accept in phrases, as part of the
obs-phrase production). Thus, parsing
To: User J. Person <person@dom.ain>
correctly returns "User J. Person" as the RealName.
AddrlistClass.__init__(): Add definition of self.phraseends which is
just self.atomends with `.' removed.
getatom(): Add an optional argument `atomends' which, if None (the
default) means use self.atomends.
getphraselist(): Pass self.phraseends to getatom() and break out of
the loop only when the current character is in phraseends instead of
atomends. This allows dots to continue to serve as atom delimiters in
all contexts except phrases.
Also, loads of docstring updates to document RFC 2822 conformance
(sorry, this should have been two separate patches).
Added a patch which modifies idlefork so that it can co-exist with
"official" IDLE in the site-packages directory. This patch is not
necessary if only idlefork IDLE is installed. See INSTALLATION for further
details.
The default behaviour of idlefork idle is to open an editor window instead
of a shell. Complex expressions may be run in a fresh environment by
selecting "run". There are times, however, when a shell is desired.
Though one can be started by "idle -t 'foo'", this script is more
convenient. In addition, a shell and an editor window can be started
in parallel by "idles -e foo.py".
that 'yield' is a keyword. This doesn't help test_generators at all! I
don't know why not. These things do work now (and didn't before this
patch):
1. "from __future__ import generators" now works in a native shell.
2. Similarly "python -i xxx.py" now has generators enabled in the
shell if xxx.py had them enabled.
3. This program (which was my doctest proxy) works fine:
from __future__ import generators
source = """\
def f():
yield 1
"""
exec compile(source, "", "single") in globals()
print type(f())
The default behaviour of idlefork idle is to open an editor window instead
of a shell. Complex expressions may be run in a fresh environment by
selecting "run". There are times, however, when a shell is desired.
Though one can be started by "idle -t 'foo'", this script is more
convenient. In addition, a shell and an editor window can be started
in parallel by "idles -e foo.py".
that info to code dynamically compiled *by* code compiled with generators
enabled. Doesn't yet work because there's still no way to tell the parser
that "yield" is OK (unlike nested_scopes, the parser has its fingers in
this too).
Replaced PyEval_GetNestedScopes by a more-general
PyEval_MergeCompilerFlags. Perhaps I should not have? I doubted it was
*intended* to be part of the public API, so just did.
the yield statement. I figure we have to have this in before I can
release 2.2a1 on Wednesday.
Note: test_generators is currently broken, I'm counting on Tim to fix
this.
"Move the action of loading the configuration to the IdleConf module
rather than the idle.py script. This has advantages and
disadvantages; the biggest advantage being that we can more easily
have an alternative main program." --GvR
"Amazing. A very subtle change in policy in descr-branch actually
found a bug here. Here's the deal: Class PyShell derives from class
OutputWindow. Method PyShell.close()
wants to invoke its parent method, but because PyShell long ago was
inherited from class PyShellEditorWindow, it invokes
PyShelEditorWindow.close(self). Now, class PyShellEditorWindow itself
derives from class OutputWindow, and inherits the close() method from
there without overriding it. Under the old rules,
PyShellEditorWindow.close would return an unbound method restricted to
the class that defined the implementation of close(), which was
OutputWindow.close. Under the new rules, the unbound method is
restricted to the class whose method was requested, that is
PyShellEditorWindow, and this was correctly trapped as an error." --GvR
"Taught IDLE's autoident parser that "yield" is a keyword that begins a
stmt. Along w/ the preceding change to keyword.py, making all this
work w/ a future-stmt just looks harder and harder." --tim_one
(From Rel 1.8: "Hack to make this still work with Python 1.5.2. ;-( "
--fdrake)
"Move the action of loading the configuration to the IdleConf module
rather than the idle.py script. This has advantages and
disadvantages; the biggest advantage being that we can more easily
have an alternative main program." --GvR
"Delete goodname() method, which is unused. Add gotofileline(), a
convenience method which I intend to use in a
variant. Rename test() to _test()." --GvR
This was an interesting merge. The join completely missed removing
goodname(), which was adjacent, but outside of, a small conflict.
I only caught it by comparing the 1.1.3.2/1.1.3.3 diff. CVS ain't
infallible.
"Remove legacy support for the BrowserControl module; the webbrowser
module has been included since Python 2.0, and that is the preferred
interface." --fdrake
Merged the following py-cvs revs without conflict:
1.29 Reduce copyright text output at startup
1.30 Delay setting sys.args until Tkinter is fully initialized
1.31 Whitespace normalization
1.32 Turn syntax warning into error when interactive
1.33 Fix warning initialization bug
Note that module is extensively modified wrt py-cvs
VP IDLE version depended on VP's ExecBinding.py and spawn.py to get the
path to the Windows Doc directory (relative to python.exe). Removed this
conflicting code in favor of py-cvs updates which on Windows use a hard
coded path relative to the location of this module. py-cvs updates include
support for webbrowser.py. Module still has BrowserControl.py for 1.5.2
support.
At this point, the differences wrt py-cvs relate to menu functionality.
decode(): While writing tests for uu.py, Nick Mathewson discovered
that the 'Truncated input file' exception could never get raised,
because its "if not str:" test was actually testing the builtin
function "str", not the local string vrbl "s" as intended.
Bugfix candidate.
fixed. Regrettably, this must be run manually -- somehow the I/O
redirection of the regression test breaks the test. When run under
the regression test, this raises ImportError with a warning to that
effect.
Bugfix candidate!
Fix various serious problems:
- The ThreadingTCPServer class and its derived classes were completely
broken because the main thread would close the request before the
handler thread had time to look at it. This was introduced by
Ping's close_request() patch. The fix moves the close_request()
calls to after the handler has run to completion in the BaseServer
class and the ForkingMixIn class; when using the ThreadingMixIn,
closing the request is the handler's responsibility.
- The ForkingUDPServer class has always been been broken because the
socket was closed in the child before calling the handler. I fixed
this by simply not calling server_close() in the child at all.
- I cannot get the UnixDatagramServer class to work at all. The
recvfrom() call doesn't return a meaningful client address. I added
a comment to this effect. Maybe it works on other Unix versions.
- The __all__ variable was missing ThreadingMixIn and ForkingMixIn.
- Bumped __version__ to "0.4".
- Added a note about the test suite (to be checked in shortly).
solver. In conjunction, they easily found a tour of a 200x200 board:
that's 200**2 == 40,000 levels of backtracking. Explicitly resumable
generators allow that to be coded as easily as a recursive solver (easier,
actually, because different levels can use level-customized algorithms
without pain), but without blowing the stack. Indeed, I've never written
an exhaustive Tour solver in any language before that can handle boards so
large ("exhaustive" == guaranteed to find a solution if one exists, as
opposed to probabilistic heuristic approaches; of course, the age of the
universe may be a blip in the time needed!).
We should not depend on two spaces between words, so use the white
space after the to-be-encoded word only as lookahead and don't
actually consume it in the regular expression.
committed.
tokenize.py: I like these changes, and have tested them extensively
without even realizing it, so I just updated the docstring and the docs.
tabnanny.py: Also liked this, but did a little code fiddling. I should
really rewrite this to *exploit* generators, but that's near the bottom
of my effort/benefit scale so doubt I'll get to it anytime soon (it
would be most useful as a non-trivial example of ideal use of generators;
but test_generators.py has already grown plenty of food-for-thought
examples).
inspect.py: I'm sure Ping intended for this to continue running even
under 1.5.2, so I reverted this to the last pre-gen-branch version. The
"bugfix" I checked in in-between was actually repairing a bug *introduced*
by the conversion to generators, so it's OK that the reverted version
doesn't reflect that checkin.
class FieldStorage: this patch changes read_lines() and co. to use a
StringIO() instead of a real file. The write() calls are redirected
to a private method that replaces it with a real, external file only
when it gets too big (> 1000 bytes).
This avoids problems in forms using the multipart/form-data encoding
with many fields. The original code created a temporary file for
*every* field (not just for file upload fields), thereby sometimes
exceeding the open file limit of some systems.
Note that the simpler solution "use a real file only for file uploads"
can't be used because the form field parser has no way to tell which
fields correspond to file uploads.
It's *possible* but extremely unlikely that this would break someone's
code; they would have to be stepping way outside the documented
interface for FieldStorage and use f.file.fileno(), or depend on
overriding make_file() to return a file-like object with additional
known properties.
examples of use. These poke stuff not specifically targeted before, incl.
recursive local generators relying on nested scopes, ditto but also
inside class methods and rebinding instance vars, and anonymous
partially-evaluated generators (the N-Queens solver creates a different
column-generator for each row -- AFAIK this is my invention, and it's
really pretty <wink>). No problems, not even a new leak.
"return expr" instances in generators (which latter may be generators
due to otherwise invisible "yield" stmts hiding in "if 0" blocks).
This was fun the first time, but this has gotten truly ugly now.
that required explicitly calling LazyList.clear() in the two tests that
use LazyList (I added a LazyList Fibonacci generator too).
A real bitch: the extremely inefficient first version of the 2-3-5 test
*looked* like a slow leak on Win98SE, but it wasn't "really": it generated
so many results that the heap grew over 4Mb (tons of frames! the number
of frames grows exponentially in that test). Then Win98SE malloc() starts
fragmenting address space allocating more and more heaps, and the visible
memory use grew very slowly while the disk was thrashing like mad.
Printing fewer results (i.e., keeping the heap burden under 4Mb) made
that illusion vanish.
Looks like there's no hope for plugging the LazyList leaks automatically
short of adding frameobjects and genobjects to gc. OTOH, they're very
easy to break by hand, and they're the only *kind* of plausibly realistic
leaks I've been able to provoke.
Dilemma.
Implement sys.maxunicode.
Explicitly wrap around upper/lower computations for wide Py_UNICODE.
When decoding large characters with UTF-8, represent expected test
results using the \U notation.
break cycles, which are a special problem when running generator tests
that provoke exceptions by invoking the .next() method of a named
generator-iterator: then the iterator is named in globs, and the
iterator's frame gets a tracekback object pointing back to globs, and
gc doesn't chase these types so the cycle leaks.
Also changed _run_examples() to make a copy of globs itself, so its
callers (direct and indirect) don't have to (and changed the callers
to stop making their own copies); *that* much is a change I've been
meaning to make for a long time (it's more robust the new way).
Here's a way to provoke the symptom without doctest; it leaks at a
prodigious rate; if the last two "source" lines are replaced with
g().next()
the iterator isn't named and then there's no leak:
source = """\
def g():
yield 1/0
k = g()
k.next()
"""
code = compile(source, "<source>", "exec")
def f(globs):
try:
exec code in globs
except ZeroDivisionError:
pass
while 1:
f(globals().copy())
After this change, running test_generators in an infinite loop still leaks,
but reduced from a flood to a trickle.
Good news: Some of this stuff is pretty sophisticated (read nuts), and
I haven't bumped into a bug yet.
Bad news: If I run the doctest in an infinite loop, memory is clearly
leaking.
- compile() didn't return a (empty) list of objects. Fixed.
- the various _fix_xxx_args() methods weren't called (are they new or did I overlook them?). Fixed.
Tim Peters
Guido van Rossum
Steven M. Gava
Jeremy Hylton
Fred Drake
Piers Lauder
Greg Ward
Jack Jansen
Martin v. Löwis
Just van Rossum
Marc-André Lemburg
Andrew M. Kuchling
Skip Montanaro
Kurt B. Kaiser
Barry Warsaw
Neil Schemenauer
Fredrik Lundh
unknown