Python-Dev February 2014

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106 participants
76 discussions

CPython Google Summer of Code mentors needed: deadline is tomorrow

by Jessica McKellar

Hi folks, Terri Oda's original message to this list about CPython's participation in Google Summer of Code 2014 is at the end of this email. If you'd like to see CPython participate in Google Summer of Code 2014, we need* at least 2 people* to say they are interested in mentoring by the end of today, February 13th. *Are you interested in mentoring? Please speak up!* This is not a binding commitment; this is just a statement of interest. As a previous GSoC mentor, I'd say the time commitment is around 10 hours / week per student, and this is best split across 2 mentors. GSoC FAQ: https://www.google-melange.com/gsoc/document/show/gsoc_program/google/gsoc2… The current umbrella project pages: https://wiki.python.org/moin/SummerOfCode/2014#Project_Ideas Last year's umbrella project pages: https://wiki.python.org/moin/SummerOfCode/2013#Project_Ideas Last year's CPython project ideas: https://wiki.python.org/moin/SummerOfCode/2013/python-core Regards, -Jessica === Terri's original message: For anyone who completely isn't familiar with this: Google Summer of Code is a program where Google pays students to work on open source projects for the summer. The motto goes: "Flip bits, not burgers." Google Summer of Code applications are open for mentoring organizations, and I've already put in Python's application. You can get more info here: https://wiki.python.org/moin/SummerOfCode/2014 What I'd like to know is if anyone's got any good ideas for core python projects this year and are interested in mentoring. We always have lots of students who'd like to work on Python, but right now we don't have any mentors who are available and interested in helping students make contributions to the language (We do, however, have mentors for various python sub-projects). Let me know if this might be interesting to you. I'm happy to answer any questions, and I've got experienced mentors who aren't core python devs but who'd be willing to pair up so you wouldn't have to go it alone, just let me know! Terri PS - I'm also looking for new sub-projects and other mentors -- just ask if you want to take part this year!

6 years, 5 months

[RELEASED] Python 3.4.0 release candidate 1

by Larry Hastings

On behalf of the Python development team, I'm delighted to announce the first release candidate of Python 3.4. This is a preview release, and its use is not recommended for production settings. Python 3.4 includes a range of improvements of the 3.x series, including hundreds of small improvements and bug fixes. Major new features and changes in the 3.4 release series include: * PEP 428, a "pathlib" module providing object-oriented filesystem paths * PEP 435, a standardized "enum" module * PEP 436, a build enhancement that will help generate introspection information for builtins * PEP 442, improved semantics for object finalization * PEP 443, adding single-dispatch generic functions to the standard library * PEP 445, a new C API for implementing custom memory allocators * PEP 446, changing file descriptors to not be inherited by default in subprocesses * PEP 450, a new "statistics" module * PEP 451, standardizing module metadata for Python's module import system * PEP 453, a bundled installer for the *pip* package manager * PEP 454, a new "tracemalloc" module for tracing Python memory allocations * PEP 456, a new hash algorithm for Python strings and binary data * PEP 3154, a new and improved protocol for pickled objects * PEP 3156, a new "asyncio" module, a new framework for asynchronous I/O Python 3.4 is now in "feature freeze", meaning that no new features will be added. The final release is projected for mid-March 2014. To download Python 3.4.0rc1 visit: http://www.python.org/download/releases/3.4.0/ Please consider trying Python 3.4.0rc1 with your code and reporting any new issues you notice to: http://bugs.python.org/ Enjoy! -- Larry Hastings, Release Manager larry at hastings.org (on behalf of the entire python-dev team and 3.4's contributors)

6 years, 5 months

Re: [Python-Dev] [Python-checkins] cpython: asyncio.events: Use __slots__ in Handle and TimerHandle

by Ethan Furman

On 02/12/2014 02:02 PM, yury.selivanov wrote: > http://hg.python.org/cpython/rev/920304e1f36b > changeset: 89175:920304e1f36b > user: Yury Selivanov <yselivanov(a)sprymix.com> > date: Wed Feb 12 17:01:52 2014 -0500 > summary: > asyncio.events: Use __slots__ in Handle and TimerHandle > > files: > Lib/asyncio/events.py | 4 ++++ > 1 files changed, 4 insertions(+), 0 deletions(-) > > > diff --git a/Lib/asyncio/events.py b/Lib/asyncio/events.py > --- a/Lib/asyncio/events.py > +++ b/Lib/asyncio/events.py > @@ -19,6 +19,8 @@ > class Handle: > """Object returned by callback registration methods.""" > > + __slots__ = ['_callback', '_args', '_cancelled'] > + > def __init__(self, callback, args): > assert not isinstance(callback, Handle), 'A Handle is not a callback' > self._callback = callback > @@ -46,6 +48,8 @@ > class TimerHandle(Handle): > """Object returned by timed callback registration methods.""" > > + __slots__ = ['_when'] > + > def __init__(self, when, callback, args): > assert when is not None > super().__init__(callback, args) Apologies up front if these are stupid questions, but: Why __slots__? Are we going to have so many of these things that memory is an issue? The asserts in the code -- those are not for checking user input, correct? -- ~Ethan~

6 years, 5 months

Is the PIP requirement too strict?

by Guido van Rossum

I don't happen to have OpenSSL configured on my OSX dev box right now. This usually leads to some warnings during the build stage and obviously various ssl-based tests don't work, but I can still get other stuff done. But with the latest repo, "make install" refuses to complete -- it ends fatally as follows: if test "xupgrade" != "xno" ; then \ case upgrade in \ upgrade) ensurepip="--upgrade" ;; \ install|*) ensurepip="" ;; \ esac; \ ./python.exe -E -m ensurepip \ $ensurepip --root=/ ; \ fi Traceback (most recent call last): File "/Users/guido/cpython/Lib/runpy.py", line 171, in _run_module_as_main "__main__", mod_spec) File "/Users/guido/cpython/Lib/runpy.py", line 86, in _run_code exec(code, run_globals) File "/Users/guido/cpython/Lib/ensurepip/__main__.py", line 4, in <module> ensurepip._main() File "/Users/guido/cpython/Lib/ensurepip/__init__.py", line 203, in _main default_pip=args.default_pip, File "/Users/guido/cpython/Lib/ensurepip/__init__.py", line 74, in bootstrap _require_ssl_for_pip() File "/Users/guido/cpython/Lib/ensurepip/__init__.py", line 23, in _require_ssl_for_pip raise RuntimeError(_MISSING_SSL_MESSAGE) RuntimeError: pip 1.5.2 requires SSL/TLS make: *** [install] Error 1 Can this failure be suppressed in the Makefile (given that I know what I'm doing)? -- --Guido van Rossum (python.org/~guido)

6 years, 5 months

bugs.python.org/review (DEBUG = True)?

by Christopher Welborn

Is there a reason bugs.python.org/review is running in DEBUG mode right now? I was just poking around and came across the debug 'DoesNotExist' error page when accessing: http://bugs.python.org/review/rss/reviews/cjwelborn Then, instead of a 404 I get the 'Page not found' debug page. So, just glancing at the acceptable url patterns I see one that will give you a xsrf token (if you send the appropriate headers, which is easy). I'm not a web expert, so I don't know how dangerous it really is. But the error messages were really helpful (in a bad way?). This turned up an actual error. I'm pretty sure it's an actual error, though I could be wrong. It might be an 'expected error'. When accessing http://bugs.python.org/review/account , I got: KeyError at /review/account: 'AUTH_DOMAIN' /home/roundup/trackers/tracker/rietveld/codereview/views.py in account: domain = os.environ['AUTH_DOMAIN'] Maybe someone is doing some testing and I'm just wasting people's time. I thought it would be better to say something, so if it is a mistake someone can fix it. -- \¯\ /¯/\ \ \/¯¯\/ / / Christopher Welborn (cj) \__/\__/ / cjwelborn at live·com \__/\__/ http://welbornprod.com

6 years, 5 months

[PATCH] Add an authorization header to the initial request.

by Matěj Cepl

Many websites (e.g. GitHub API) on the Internet are intentionally not following RFC with regards to the Basic Authorization and require Authorization header in the initial request and they never return 401 error. Therefore it is not possible to authorize with such websites just using urllib2.py HTTPBasicAuthHandler as described in documentation. However, RFC 2617, end of section 2 allows pre-authorization in the initial request: > A client MAY preemptively send the corresponding Authorization > header with requests for resources in that space without > receipt of another challenge from the server. (RFC also suggests preauthorization of proxy requests, but that is not part of this patch, however it could be trivially added) Also, generating HTTP BasicAuth header has been refactored into special method of AbstractBasicAuthHandler. Suggested fix for bug# 19494 This is my first attempt to contribute to Python itself, so please be gentle with me. Yes, I know that I miss unit tests and port to other branches of Python (this is against 2.7), but I would like first some feedback to see what I am missing (aside from the mentioned). Matěj Cepl --- Lib/urllib2.py | 35 +++++++++++++++++++++++++++-------- 1 file changed, 27 insertions(+), 8 deletions(-) diff --git a/Lib/urllib2.py b/Lib/urllib2.py index aadeb73..a5feb03 100644 --- a/Lib/urllib2.py +++ b/Lib/urllib2.py @@ -848,6 +848,18 @@ class AbstractBasicAuthHandler: def reset_retry_count(self): self.retried = 0 + def generate_auth_header(self, host, req, realm): + user, pw = self.passwd.find_user_password(realm, host) + if pw is not None: + raw = "%s:%s" % (user, pw) + auth = 'Basic %s' % base64.b64encode(raw).strip() + if req.headers.get(self.auth_header, None) == auth: + return None + req.add_unredirected_header(self.auth_header, auth) + return req + else: + return None + def http_error_auth_reqed(self, authreq, host, req, headers): # host may be an authority (without userinfo) or a URL with an # authority @@ -875,14 +887,10 @@ class AbstractBasicAuthHandler: return response def retry_http_basic_auth(self, host, req, realm): - user, pw = self.passwd.find_user_password(realm, host) - if pw is not None: - raw = "%s:%s" % (user, pw) - auth = 'Basic %s' % base64.b64encode(raw).strip() - if req.headers.get(self.auth_header, None) == auth: - return None - req.add_unredirected_header(self.auth_header, auth) - return self.parent.open(req, timeout=req.timeout) + req = self.generate_auth_header(host, req, realm) + + if req is not None: + self.parent.open(req, timeout=req.timeout) else: return None @@ -898,6 +906,17 @@ class HTTPBasicAuthHandler(AbstractBasicAuthHandler, BaseHandler): self.reset_retry_count() return response + def http_request(self, req): + host = req.get_host() + + new_req = self.generate_auth_header(host, req, None) + if new_req is not None: + req = new_req + + return req + + https_request = http_request + class ProxyBasicAuthHandler(AbstractBasicAuthHandler, BaseHandler): -- 1.8.5.2.192.g7794a68

6 years, 5 months

Re: [Python-Dev] [RELEASED] Python 3.4.0 release candidate 1

by David Robinow

On Tue, Feb 11, 2014 at 5:45 AM, Terry Reedy <tjreedy(a)udel.edu> wrote: > On 2/11/2014 5:13 AM, Terry Reedy wrote: >> ... >> I installed 64 bit 3.3.4 yesterday with no problem. I reran it today in >> repair mode and again, no problem. >> >> With 64 bit 3.4.0, I get >> "There is a problem with this Windows Installer package. A program >> required for the install to complete could not be run." >> >> No, the generic message does not bother to say *which* program :-(. >> >> 34 bit 3.4.0 installed fine. > > > I wrote too soon. > > Python 3.4.0rc1 (v3.4.0rc1:5e088cea8660, Feb 11 2014, 05:54:25) [MSC >>>> import tkinter > Traceback ... > import _tkinter > ImportError: DLL load failed: %1 is not a valid Win32 application. > > So tkinter, Idle, turtle fail and the corresponding tests get skipped. 32 bit and 64 bit both work for me. Windows 7.

6 years, 5 months

Fwd: [python-tulip] Need help to finish asyncio documentation

by Guido van Rossum

We could really use more help reviewing and finishing asyncio's docs! ---------- Forwarded message ---------- From: Victor Stinner <victor.stinner(a)gmail.com> Date: Sat, Feb 8, 2014 at 2:38 PM Subject: [python-tulip] Need help to finish asyncio documentation To: python-tulip <python-tulip(a)googlegroups.com> Hi, I wrote most parts of the documentation of the asyncio module, but I'm not sure that anyone already read it yet. Can you please at least take at look? http://docs.python.org/dev/library/asyncio.html Tell me if the documentation needs more examples. I don't want to add whole applications, only very short examples to explain one feature or concept, or show how to use one specific API. I just realized that add/remove_reader/writer() methods of the event loop were not documented, sock_recv/sendall/accept/connect() methods neither. I documented them. There are still many functions which only have "XXX" for documentation. If you would like to contribute, send patches on .rst files. The source of the documentation is in the Doc/library/ directory of CPython repository: http://hg.python.org/cpython/ Files asyncio-*.rst: http://hg.python.org/cpython/file/default/Doc/library Victor -- --Guido van Rossum (python.org/~guido)

6 years, 5 months

[RELEASED] Python 3.3.4

by Georg Brandl

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On behalf of the Python development team, I'm very happy to announce the release of Python 3.3.4. Python 3.3.4 includes several security fixes and over 120 bug fixes compared to the Python 3.3.3 release. This release fully supports OS X 10.9 Mavericks. In particular, this release fixes an issue that could cause previous versions of Python to crash when typing in interactive mode on OS X 10.9. Python 3.3 includes a range of improvements of the 3.x series, as well as easier porting between 2.x and 3.x. In total, almost 500 API items are new or improved in Python 3.3. For a more extensive list of changes in the 3.3 series, see http://docs.python.org/3.3/whatsnew/3.3.html To download Python 3.3.4 visit: http://www.python.org/download/releases/3.3.4/ This is a production release, please report any bugs to http://bugs.python.org/ Enjoy! - -- Georg Brandl, Release Manager georg at python.org (on behalf of the entire python-dev team and 3.3's contributors) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iEYEARECAAYFAlL5PMwACgkQN9GcIYhpnLCv4wCePNVqwsOYCHdJBix2bKk4PNpK GBoAnRML2x6obCssnUJe5xwuUZYw8ZSY =+/Nz -----END PGP SIGNATURE-----

6 years, 5 months

PyPI offline, status is ok

by anatoly techtonik

http://status.python.org/ shows all green https://pypi.python.org/pypi/gazest shows Error 503 backend read error backend read error Guru Meditation: XID: 2792709923 ________________________________ Varnish cache server https://pypi.python.org/pypi/ shows XID: 4199593736 -- anatoly t.

6 years, 5 months

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Python-Dev February 2014