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Author SHA1 Message Date
Brett Cannon
efad00d520 Issue #14646: __import__() now sets __loader__ if need be. 
importlib.util.module_for_loader also will set __loader__ along with
__package__. This is in conjunction to a forthcoming update to PEP 302
which will make these two attributes required for loaders to set.
 2012-04-27 17:27:14 -04:00
Brett Cannon
aa93642a35 Issue #14605: Use None in sys.path_importer_cache to represent no 
finder instead of using some (now non-existent) implicit finder.
 2012-04-27 15:30:58 -04:00
Brett Cannon
ce418b448f Issue #14605: Stop having implicit entries for sys.meta_path. 
ImportWarning is raised if sys.meta_path is found to be empty.
 2012-04-27 14:01:58 -04:00
Brett Cannon
e0d88a173c Issue #14605: Make explicit the entries on sys.path_hooks that used to 
be implicit.

Added a warning for when sys.path_hooks is found to be empty. Also
changed the meaning of None in sys.path_importer_cache to represent
trying sys.path_hooks again (an interpretation of previous semantics).
Also added a warning for when None was found.

The long-term goal is for None in sys.path_importer_cache to represent
the same as imp.NullImporter: no finder found for that sys.path entry.
 2012-04-25 20:54:04 -04:00
Marc-Andre Lemburg
7541c8ea37 Issue #14605 and #14642: 
Issue a warning in case Python\importlib.h needs to be rebuilt,
but there's no Python interpreter around to freeze the bootstrap
script.
 2012-04-25 10:54:48 +02:00
Marc-Andre Lemburg
4fe29c9657 Issue #14605: Rename _SourcelessFileLoader to SourcelessFileLoader. 
This time also recreating the Python/importlib.h file to make
make happy. See the ticket for details.
 2012-04-25 02:31:37 +02:00
Marc-Andre Lemburg
ac8805a01a Issue #14605: Revert renaming of _SourcelessFileLoader, since it caused 
the buildbots to fail.
 2012-04-25 02:11:07 +02:00
Marc-Andre Lemburg
2945e78b05 Issue #14605: Rename _SourcelessFileLoader to SourcelessFileLoader 2012-04-25 01:36:48 +02:00
Brett Cannon
938d44d59c Issue #14605: Expose importlib.abc.FileLoader and 
importlib.machinery.(FileFinder, SourceFileLoader,
_SourcelessFileLoader, ExtensionFileLoader).

This exposes all of importlib's mechanisms that will become public on
the sys module.
 2012-04-22 19:58:33 -04:00
Brett Cannon
5c903e6ee1 Issue #13959: Continue to try to accomodate altsep in importlib by not 
ignoring altsep if it already exists on a path when doing a join.
 2012-04-22 11:45:07 -04:00
Brett Cannon
cf649958f7 Revert to os.path.join() semantics for path manipulation in importlib 
which is different than what imp.cache_from_source() operates on.
 2012-04-22 02:06:23 -04:00
Brett Cannon
a846236855 Continue the good fight to get Windows to like importlib by fixing a 
variable name.
 2012-04-21 21:46:32 -04:00
Brett Cannon
0d05a7698b Have importlib look for pre-existing path separators when joining 
paths.
 2012-04-21 21:21:27 -04:00
Brett Cannon
2f92389d5c Don't worry about moving imp.get_tag() over to Lib/imp.py. 2012-04-21 18:55:51 -04:00
Brett Cannon
a64faf0771 Issue #13959: Re-implement imp.source_from_cache() in Lib/imp.py. 2012-04-21 18:52:52 -04:00
Brett Cannon
ea59dbff16 Issue #13959: Re-implement imp.cache_from_source() in Lib/imp.py. 2012-04-20 21:44:46 -04:00
Brett Cannon
ed672d6872 Make path manipulation more robust for platforms with alternative path 
separators.
 2012-04-20 21:19:53 -04:00
Brett Cannon
24117a748b Issue #13959: Keep imp.get_magic() in C code, but cache in importlib 
for performance. While get_magic() could move to Lib/imp.py, having to
support PyImport_GetMagicNumber() would lead to equal, if not more, C
code than sticking with the status quo.
 2012-04-20 18:04:03 -04:00
Brett Cannon
8ff6baf25b Issue #14581: Windows users are allowed to import modules w/o taking 
the file suffix's case into account, even when doing a case-sensitive
import.
 2012-04-20 12:53:14 -04:00
Benjamin Peterson
2a481e58ff don't bother keeping a set we'll never use 2012-04-18 15:25:50 -04:00
Benjamin Peterson
d76bc7abac rollback 005fd1fe31ab (see #14609 and #14582) 
Being able to overload a sys.module entry during import of a module was broken
by this changeset.
 2012-04-18 10:55:43 -04:00
Brett Cannon
7bd329d800 Issue #12599: Be more strict in accepting None vs. a false-like object 
in importlib.

Thanks to PJE for pointing out the issue and Nick Coghlan for filing
the bug.
 2012-04-17 21:41:35 -04:00
Brett Cannon
6f44d66bc4 Issue #13959: Rename imp to _imp and add Lib/imp.py and begin 
rewriting functionality in pure Python.

To start, imp.new_module() has been rewritten in pure Python, put into
importlib (privately) and then publicly exposed in imp.
 2012-04-15 16:08:47 -04:00
Brett Cannon
7788838473 merge 2012-04-15 15:25:10 -04:00
Brett Cannon
881535b726 Issue #14582: Import returns the module returned by a loader instead 
of sys.modules when possible.

This is being done for two reasons. One is to gain a little bit of
performance by skipping an unnecessary dict lookup in sys.modules. But
the other (and main) reason is to be a little bit more clear in how
things should work from the perspective of import's interactions with
loaders. Otherwise loaders can easily forget to return the module even
though PEP 302 explicitly states they are expected to return the module
they loaded.
 2012-04-15 15:24:04 -04:00
Philip Jenvey
f8f3190d32 utilize startswith(tuple) 2012-04-15 12:21:32 -07:00
Brett Cannon
49f8d8b016 Handle importing pkg.mod by executing 
__import__('mod', {'__packaging__': 'pkg', level=1) w/o properly (and
thus not segfaulting).
 2012-04-14 21:50:00 -04:00
Brett Cannon
44590e4786 Add some comments. 2012-04-14 18:37:07 -04:00
Brett Cannon
fd0741555b Issue #2377: Make importlib the implementation of __import__(). 
importlib._bootstrap is now frozen into Python/importlib.h and stored
as _frozen_importlib in sys.modules. Py_Initialize() loads the frozen
code along with sys and imp and then uses _frozen_importlib._install()
to set builtins.__import__() w/ _frozen_importlib.__import__().
 2012-04-14 14:10:13 -04:00
Brett Cannon
bbb6680ee5 Have importlib take advantage of ImportError's new 'name' and 'path' 
attributes.
 2012-04-12 21:09:01 -04:00
Brett Cannon
927d87470a If a module injects something into sys.modules as a side-effect of 
importation, then respect that injection.

Discovered thanks to Lib/xml/parsers/expat.py injecting
xml.parsers.expat.errors and etree now importing that directly as a
module.
 2012-04-02 20:33:56 -04:00
Brett Cannon
0d4d410b2d Remove a dead docstring. 2012-03-02 12:32:14 -05:00
Brett Cannon
b46a1793a7 Update importlib.invalidate_caches() to be more general. 2012-02-27 18:15:42 -05:00
Philip Jenvey
4b42ff609d unused imports, pep8 2012-02-24 21:48:17 -08:00
Brett Cannon
625cd23da4 Simplify importib._resolve_name(). 2012-02-24 11:20:54 -05:00
Brett Cannon
4b03b68635 Turn _return_module() into _handle_fromlist(). 2012-02-23 20:47:57 -05:00
Brett Cannon
f500778f65 Improper type for __package__ should raise TypeError, not ValueError. 2012-02-23 18:29:12 -05:00
Brett Cannon
068915cc8b Do a type check instead of an interface check. 2012-02-23 18:18:48 -05:00
Brett Cannon
34d8e41a47 Refactor importlib to make it easier to re-implement in C. 2012-02-22 18:33:05 -05:00
Charles-François Natali
6db1c40b37 Issue #14077: importlib: Fix regression introduced by de6703671386. 2012-02-22 21:03:09 +01:00
Antoine Pitrou
b5c793a0b3 Issue #14063: fix test_importlib failure under OS X case-insensitive filesystems 
(regression)
 2012-02-20 22:06:59 +01:00
Benjamin Peterson
6ddac006be put docstrings on functions 2012-02-20 15:06:35 -05:00
Antoine Pitrou
b67075beb5 _relax_case -> _make_relax_case 2012-02-20 13:52:47 +01:00
Antoine Pitrou
c541f8ef40 Issue #14043: Speed up importlib's _FileFinder by at least 8x, and add a new importlib.invalidate_caches() function. 
importlib is now often faster than imp.find_module() at finding modules.
 2012-02-20 01:48:16 +01:00
Brett Cannon
336b2f45e5 Fix a failing importlib test under Windows. 
Closes issue #14054.
 2012-02-19 19:36:44 -05:00
Brett Cannon
f2e86751cc Optimize importlib's case-sensitivity check by wasting as little time as possible under case-sensitive OSs. 2012-02-17 09:46:48 -05:00
Brett Cannon
ba17fe256e Have importlib use os.replace() for atomic renaming. 
Closes issue #13961. Thanks to Charles-François Natali for the patch.
 2012-02-17 09:26:53 -05:00
Brett Cannon
f58d45c649 Tweak the handling of the empty string in sys.path for importlib. 
It seems better to cache the finder for the cwd under its full path
insetad of '' in case the cwd changes. Otherwise FileFinder needs to
dynamically change itself based on whether it is given '' instead of
caching a finder for every change to the cwd.
 2012-02-16 18:12:00 -05:00
Brett Cannon
3b1a06c1ea importlib.__import__() now raises ValueError when level < 0. 
This is to bring it more in line with what PEP 328 set out to do with
removing ambiguous absolute/relative import semantics.
 2012-02-16 17:47:48 -05:00
Brett Cannon
7fab676e87 Refactor importlib.__import__() and _gcd_import() to facilitate using 
an __import__ implementation that takes care of basics in C and punts
to importlib for more complicated code.
 2012-02-16 13:43:41 -05:00