Added Windows support for os.symlink when run on Windows 6.0 or greater,
aka Vista. Previous Windows versions will raise NotImplementedError
when trying to symlink.
Includes numerous test updates and additions to test_os, including
a symlink_support module because of the fact that privilege escalation
is required in order to run the tests to ensure that the user is able
to create symlinks. By default, accounts do not have the required
privilege, so the escalation code will have to be exposed later (or
documented on how to do so). I'll be following up with that work next.
Note that the tests use ctypes, which was agreed on during the PyCon
language summit.
This required moving the class from importlib/abc.py into
importlib/_bootstrap.py and jiggering some code to work better with the class.
This included changing how the file finder worked to better meet import
semantics. This also led to fixing importlib to handle the empty string from
sys.path as import currently does (and making me wish we didn't support that
instead just required people to insert '.' instead to represent cwd).
It also required making the new set_data abstractmethod create
any needed subdirectories implicitly thanks to __pycache__ (it was either this
or grow the SourceLoader ABC to gain an 'exists' method and either a mkdir
method or have set_data with no data arg mean to create a directory).
Lastly, as an optimization the file loaders cache the file path where the
finder found something to use for loading (this is thanks to having a
sourceless loader separate from the source loader to simplify the code and
cut out stat calls).
Unfortunately test_runpy assumed a loader would always work for a module, even
if you changed from underneath it what it was expected to work with. By simply
dropping the previous loader in test_runpy so the proper loader can be returned
by the finder fixed the failure.
At this point importlib deviates from import on two points:
1. The exception raised when trying to import a file is different (import does
an explicit file check to print a special message, importlib just says the path
cannot be imported as if it was just some module name).
2. the co_filename on a code object is not being set to where bytecode was
actually loaded from instead of where the marshalled code object originally
came from (a solution for this has already been agreed upon on python-dev but has
not been implemented yet; issue8611).
svn+ssh://pythondev@svn.python.org/python/trunk
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r82455 | eric.smith | 2010-07-03 00:44:16 +0300 (Sat, 03 Jul 2010) | 1 line
Moved period outside paren, where it belongs.
........
r82457 | ezio.melotti | 2010-07-03 01:17:29 +0300 (Sat, 03 Jul 2010) | 1 line
#9139: Add examples for str.format().
........
r82459 | ezio.melotti | 2010-07-03 01:50:39 +0300 (Sat, 03 Jul 2010) | 1 line
#9139: the thousands separator is new in 2.7. Also add a missing variable in the example.
........
reality it's simply an implementation detail for CPython. This point is now
clearly documented in both the docs for dis and the glossary.
Closes issue #7829. Thanks to Terry Reedy for some initial suggestions on
wording.
svn+ssh://pythondev@svn.python.org/python/trunk
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r82439 | nick.coghlan | 2010-07-03 01:50:14 +1000 (Sat, 03 Jul 2010) | 1 line
Fix a couple of minor nits in What's New before the release goes out
........
svn+ssh://pythondev@svn.python.org/python/trunk
........
r82379 | mark.dickinson | 2010-06-29 21:09:12 +0100 (Tue, 29 Jun 2010) | 1 line
Issue #1789: clarify that the 'size' column in struct docs refers to standard size.
........
Required updating code relying on other modules to switch to _bootstrap's
unique module requirements. This led to the realization that
get_code was being too liberal in its exception catching when calling set_data
by blindly grabbing IOError. Shifted the responsibility of safely ignoring
writes to a read-only path to set_data.
Importlib is still not relying on SourceLoader yet; requires creating a
SourcelessLoader and updating the source finder.
svn+ssh://pythondev@svn.python.org/python/trunk
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r77402 | brett.cannon | 2010-01-09 20:56:19 -0600 (Sat, 09 Jan 2010) | 12 lines
DeprecationWarning is now silent by default.
This was originally suggested by Guido, discussed on the stdlib-sig mailing
list, and given the OK by Guido directly to me. What this change essentially
means is that Python has taken a policy of silencing warnings that are only
of interest to developers by default. This should prevent users from seeing
warnings which are triggered by an application being run against a new
interpreter before the app developer has a chance to update their code.
Closes issue #7319. Thanks to Antoine Pitrou, Ezio Melotti, and Brian Curtin
for helping with the issue.
........
r77505 | brett.cannon | 2010-01-14 14:00:28 -0600 (Thu, 14 Jan 2010) | 7 lines
The silencing of DeprecationWarning was not taking -3 into consideration. Since
Py3K warnings are DeprecationWarning by default this was causing -3 to
essentially be a no-op. Now DeprecationWarning is only silenced if -3 is not
used.
Closes issue #7700. Thanks Ezio Melotti and Florent Xicluna for patch help.
........
r77510 | brett.cannon | 2010-01-14 19:31:45 -0600 (Thu, 14 Jan 2010) | 1 line
Remove C++/C99-style comments.
........
SourceLoader is a simplification of both PyLoader and PyPycLoader. If one only
wants to use source, then they need to only implement get_data and
get_filename. To also use bytecode -- sourceless loading is not supported --
then two abstract methods -- path_mtime and set_data -- need to be implemented.
Compared to PyLoader and PyPycLoader, there are less abstract methods
introduced and bytecode files become an optimization controlled by the ABC and
hidden from the user (this need came about as PEP 3147 showed that not treating
bytecode as an optimization can cause problems for compatibility).
PyLoader is deprecated in favor of SourceLoader. To be compatible from Python
3.1 onwards, a subclass need only use simple methods for source_path and
is_package. Otherwise conditional subclassing based on whether Python 3.1 or
Python 3.2 is being is the only change. The documentation and docstring for
PyLoader explain what is exactly needed.
PyPycLoader is deprecated also in favor of SourceLoader. Because PEP 3147
shifted bytecode path details so much, there is no foolproof way to provide
backwards-compatibility with SourceLoader. Because of this the class is simply
deprecated and users should move to SourceLoader (and optionally PyLoader for
Python 3.1). This does lead to a loss of support for sourceless loading
unfortunately.
At some point before Python 3.2 is released, SourceLoader will be moved over to
importlib._bootstrap so that the core code of importlib relies on the new code
instead of the old PyPycLoader code. This commit is being done now so that
there is no issue in having the API in Python 3.1a1.
Georg Brandl
Senthil Kumaran
R. David Murray
Brian Curtin
Vinay Sajip
Victor Stinner
Brett Cannon
Mark Dickinson
Nick Coghlan
Ezio Melotti
Benjamin Peterson
Michael Foord