Mailman 3 April 2013 - Python-Dev

relative import circular problem
by Kristján Valur Jónsson April 5, 2013

April 5, 2013

I just ran into the issue described in http://stackoverflow.com/questions/6351805/cyclic-module-dependencies-and-r…. This is unfortunate, because we have been trying to move towards relative imports in order to aid flexibility in package and library design. The relative import syntax (from foo import bar) is a getattr type of lookup (i.e. import foo, then get attr from it). This is in contrast with absolute import import foo.bar (get the module foo.bar from sys.modules or import it) … [View More]

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Are undocumented exceptions considered bugs?
by Stefan Bucur April 3, 2013

April 3, 2013

Hi, I'm not sure this is the right place to ask this question, but I thought I'd give it a shot since it also concerns the Python standard library. I'm writing an automated test case generation tool for Python programs that explores all possible execution paths through a program. When applying this tool on Python's 2.7.3 urllib package, it discovered input strings for which the urllib.urlopen(url) call would raise a TypeError. For instance: urllib.urlopen('\x00\x00\x00') [...] File "/home/… [View More]

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could gevent be apart the standard Python library in future ?
by iMath April 3, 2013

April 3, 2013

Hi, It will be my first post here. could gevent be apart the standard Python library in future ?

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Re: [Python-Dev] [Python-checkins] cpython (3.3): Whatsnew typo
by Eric V. Smith April 2, 2013

April 2, 2013

On 10/3/2012 8:59 PM, jesus.cea wrote: > > -Solaris and derived platforms have a new class :class:`select.devpoll` > -for high performance asyncronous sockets via :file:`/dev/poll`. > +Solaris and derivatives platforms have a new class :class:`select.devpoll` > +for high performance asynchronous sockets via :file:`/dev/poll`. That should be "Solaris and derivative platforms ...".

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What code in Python creates .exe launchers for 'entry_points' in 'setup.py'?
by Grigory Petrov April 1, 2013

April 1, 2013

Hello. On Windows, 'setuptools' and 'distribute' package systems allows to add 'entry_points' definition into 'setup.py' python distribution script. For each entry in this definition, some kind of bootstrapper '.exe' file will be created and placed into 'Scripts' python dir. For example, if i install 'pip' via 'setup.py', a file named 'pip.exe' will be created and placed into 'C:\Python27\Scripts'. But what python code is responsible for creation of this bootstrapper executables? I have … [View More]

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A bit about the GIL
by Alfredo Solano Martínez April 1, 2013

April 1, 2013

Hi, I know this may be tiresome by now, so feel free to ignore, but I'd like to share with the list an idea about the GIL, more specifically the reference counting mechanism. Simply put, make the reference counter a sharded one. That is, separate it into several subcounters, in this case one for each thread. The logic would then be something like this: - when increasing the refcount, a thread writes only to its own subcounter, creating one first if necessary. - similarly, when decreasing the … [View More]

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