Commit Graph

544 Commits

Author SHA1 Message Date
Brett Cannon 4ac5150e06
bpo-32248: Implement importlib.abc.ResourceReader (GH-4892) 2017-12-15 16:29:35 -08:00
Benjamin Peterson 42aa93b8ff
closes bpo-31650: PEP 552 (Deterministic pycs) implementation (#4575)
Python now supports checking bytecode cache up-to-dateness with a hash of the
source contents rather than volatile source metadata. See the PEP for details.

While a fairly straightforward idea, quite a lot of code had to be modified due
to the pervasiveness of pyc implementation details in the codebase. Changes in
this commit include:

- The core changes to importlib to understand how to read, validate, and
  regenerate hash-based pycs.

- Support for generating hash-based pycs in py_compile and compileall.

- Modifications to our siphash implementation to support passing a custom
  key. We then expose it to importlib through _imp.

- Updates to all places in the interpreter, standard library, and tests that
  manually generate or parse pyc files to grok the new format.

- Support in the interpreter command line code for long options like
  --check-hash-based-pycs.

- Tests and documentation for all of the above.
2017-12-09 10:26:52 -08:00
Serhiy Storchaka 41c56940c6 bpo-21720: Restore the Python 2.7 logic in handling a fromlist. (#4118)
BytesWarning no longer emitted when the fromlist argument of
__import__() or the __all__ attribute of the module contain bytes
instances.
2017-10-26 10:41:59 +03:00
Serhiy Storchaka f07e2b64df bpo-31642: Restore blocking "from" import by setting None in sys.modules. (#3834) 2017-10-08 10:44:10 +03:00
Yury Selivanov 02e82a0596 bpo-31709: Update importlib magic (#3906) 2017-10-06 10:18:10 -04:00
Antoine Pitrou 88c60c9668 Trivial cleanups following bpo-31370 (#3649)
* Trivial cleanups following bpo-31370

* Also cleanup the "importlib._bootstrap_external" module
2017-09-18 23:50:44 +02:00
Serhiy Storchaka 9b0d1d647e bpo-31070: Fix a race condition in importlib _get_module_lock(). (#3033) 2017-08-09 14:29:12 +03:00
Victor Stinner e72b1359f8 bpo-30891: Fix again importlib _find_and_load() (#2665)
Use sys.modules.get() in the "with _ModuleLockManager(name):" block
to protect the dictionary key with the module lock and use an atomic
get to prevent race condition.

Remove also _bootstrap._POPULATE since it was unused
(_bootstrap_external now has its own _POPULATE object), add a new
_SENTINEL object instead.
2017-07-21 13:00:46 +02:00
Serhiy Storchaka 8a9cd20edc bpo-30876: Relative import from unloaded package now reimports the package (#2639)
instead of failing with SystemError.

Relative import from non-package now fails with ImportError rather than
SystemError.
2017-07-12 06:50:03 +03:00
Victor Stinner 4f9a446f3f bpo-30891: Fix importlib _find_and_load() race condition (#2646)
* Rewrite importlib _get_module_lock(): it is now responsible to hold
  the imp lock directly.
* _find_and_load() now holds the module lock to check if name is in
  sys.modules to prevent a race condition
2017-07-10 22:52:32 +02:00
Serhiy Storchaka b4baacee1a bpo-30814: Fixed a race condition when import a submodule from a package. (#2580) 2017-07-06 08:09:03 +03:00
Milan Oberkirch 8c3f05e9f0 bpo-30436: Raise ModuleNotFoundError for importlib.util.find_spec() when parent isn't a package (GH-1899)
Previously AttributeError was raised, but that's not very reflective of the fact that the requested module can't be found since the specified parent isn't actually a package.
2017-06-14 14:34:50 -07:00
Garvit Khatri 94987826e8 bpo-29851: Have importlib.reload() raise ImportError if the module's spec is not found (GH-972) 2017-05-24 15:19:50 -07:00
Eric Snow 6b4be195cd bpo-22257: Small changes for PEP 432. (#1728)
PEP 432 specifies a number of large changes to interpreter startup code, including exposing a cleaner C-API. The major changes depend on a number of smaller changes. This patch includes all those smaller changes.
2017-05-22 21:36:03 -07:00
Serhiy Storchaka 55fe1ae970 bpo-30022: Get rid of using EnvironmentError and IOError (except test… (#1051) 2017-04-16 10:46:38 +03:00
Mandeep Bhutani 9f0aa4843f bpo-29862: Fix grammar in importlib.reload() exception (GH-809) 2017-03-24 21:51:21 -07:00
Matthias Bussonnier 1d4601c2c6 bpo-29576: add explicit deprecation for importlib.abc.find_loader() and find_module() (GH-32) 2017-02-15 18:00:32 -08:00
Yury Selivanov f2392133eb Issue #26110: Add LOAD_METHOD/CALL_METHOD opcodes.
Special thanks to INADA Naoki for pushing the patch through
the last mile, Serhiy Storchaka for reviewing the code, and to
Victor Stinner for suggesting the idea (originally implemented
in the PyPy project).
2016-12-13 19:03:51 -05:00
Steve Dower 10beb3cfef Issue #28896: Disable WindowsRegistryFinder by default. 2016-12-12 11:17:59 -08:00
Nick Coghlan 19d246745d Issue #23722: improve __classcell__ compatibility
Handling zero-argument super() in __init_subclass__ and
__set_name__ involved moving __class__ initialisation to
type.__new__. This requires cooperation from custom
metaclasses to ensure that the new __classcell__ entry
is passed along appropriately.

The initial implementation of that change resulted in abruptly
broken zero-argument super() support in metaclasses that didn't
adhere to the new requirements (such as Django's metaclass for
Model definitions).

The updated approach adopted here instead emits a deprecation
warning for those cases, and makes them work the same way they
did in Python 3.5.

This patch also improves the related class machinery documentation
to cover these details and to include more reader-friendly
cross-references and index entries.
2016-12-05 16:47:55 +10:00
Serhiy Storchaka 7344285c19 Issue #28257: Improved error message when pass a non-iterable as
a var-positional argument.  Added opcode BUILD_TUPLE_UNPACK_WITH_CALL.
2016-10-02 10:33:46 +03:00
Nick Coghlan 944368e1cc Issue #23722: Initialize __class__ from type.__new__()
The __class__ cell used by zero-argument super() is now initialized
from type.__new__ rather than __build_class__, so class methods
relying on that will now work correctly when called from metaclass
methods during class creation.

Patch by Martin Teichmann.
2016-09-11 14:45:49 +10:00
Eric Snow 50fd89806f Issue #24320: Drop an old setuptools-induced hack. 2016-09-09 13:30:54 -07:00
Victor Stinner f9b760f48a Rework CALL_FUNCTION* opcodes
Issue #27213: Rework CALL_FUNCTION* opcodes to produce shorter and more
efficient bytecode:

* CALL_FUNCTION now only accepts position arguments
* CALL_FUNCTION_KW accepts position arguments and keyword arguments, but keys
  of keyword arguments are packed into a constant tuple.
* CALL_FUNCTION_EX is the most generic, it expects a tuple and a dict for
  positional and keyword arguments.

CALL_FUNCTION_VAR and CALL_FUNCTION_VAR_KW opcodes have been removed.

2 tests of test_traceback are currently broken: skip test, the issue #28050 was
created to track the issue.

Patch by Demur Rumed, design by Serhiy Storchaka, reviewed by Serhiy Storchaka
and Victor Stinner.
2016-09-09 10:17:08 -07:00
Yury Selivanov f8cb8a16a3 Issue #27985: Implement PEP 526 -- Syntax for Variable Annotations.
Patch by Ivan Levkivskyi.
2016-09-08 20:50:03 -07:00
Eric Snow f3fd06a2e4 Issue #28026: Raise ImportError when exec_module() exists but create_module() is missing. 2016-09-08 11:12:31 -07:00
Brett Cannon 035a100382 Issue #26667: Add path-like object support to importlib.util. 2016-09-07 18:39:18 -07:00
Eric Snow 46f97b85a8 Issue #15767: Use ModuleNotFoundError. 2016-09-07 16:56:15 -07:00
Brett Cannon eaecc692df Issue #27974: Remove importlib._bootstrap._ManageReload.
Class was dead code. Thanks to Xiang Zhang for the patch.
2016-09-06 16:20:46 -07:00
Serhiy Storchaka ea525a2d1a Issue #27078: Added BUILD_STRING opcode. Optimized f-strings evaluation. 2016-09-06 22:07:53 +03:00
Brett Cannon 4106f61c4c Merge for #27083 2016-07-16 10:45:16 -07:00
Brett Cannon 7ca63cb7cc Fix regressions introduced by fixes for issue #27083. 2016-07-16 10:44:13 -07:00
Brett Cannon b3e73b30ff Merge for #27083 2016-07-15 11:55:21 -07:00
Brett Cannon a47a7a5bf8 Issue #27083: Respect the PYTHONCASEOK environment variable under
Windows.

Originally only b'PYTHONCASEOK' was being checked for in os.environ,
but that won't work under Windows where all environment variables are
strings (on OS X they are bytes).

Thanks to Eryk Sun for the bug report.
2016-07-15 11:54:38 -07:00
Brett Cannon 3fef2eef2e Issue #26972: Fix some mistakes in importlib-related docstrings.
Thanks to Oren Milman for the patch.
2016-07-08 11:09:35 -07:00
Brett Cannon 696c35e86b Issue #26186: Remove the restriction that built-in and extension
modules  can't be lazily loaded.

Thanks to Python 3.6 allowing for types.ModuleType to have its
__class__ mutated, the restriction can be lifted by calling
create_module() on the wrapped loader.
2016-06-25 10:58:17 -07:00
Brett Cannon da037616b1 Merge from 3.5 2016-06-25 10:50:24 -07:00
Brett Cannon e92dc9c23d Fix a scoping issue where an UnboundLocalError was triggered if a
lazy-loaded module was already in sys.modules.
2016-06-25 10:47:53 -07:00
Serhiy Storchaka 64204de04c Issue #27095: Simplified MAKE_FUNCTION and removed MAKE_CLOSURE opcodes.
Patch by Demur Rumed.
2016-06-12 17:36:24 +03:00
Serhiy Storchaka 5697c4b641 Comment fixes extracted from patch by Demur Rumed. 2016-06-12 17:02:10 +03:00
Serhiy Storchaka cf2ad55511 Issue #27286: Fixed compiling BUILD_MAP_UNPACK_WITH_CALL opcode. Calling
function with generalized unpacking (PEP 448) and conflicting keyword names
could cause undefined behavior.
2016-06-12 09:35:13 +03:00
Serhiy Storchaka 3c317e76a2 Issue #27286: Fixed compiling BUILD_MAP_UNPACK_WITH_CALL opcode. Calling
function with generalized unpacking (PEP 448) and conflicting keyword names
could cause undefined behavior.
2016-06-12 09:22:01 +03:00
Serhiy Storchaka 6a7506a77f Issue #27140: Added BUILD_CONST_KEY_MAP opcode. 2016-06-12 00:39:41 +03:00
Eric Snow 0472217d43 Issue #27138: Fix the doc comment for FileFinder.find_spec(). 2016-05-27 12:56:41 -06:00
Eric Snow fc36e66af4 Issue #27138: Fix the doc comment for FileFinder.find_spec(). 2016-05-27 12:36:28 -06:00
Martin Panter 3e04d5b306 Issue #27076: Merge spelling from 3.5 2016-05-26 06:03:19 +00:00
Martin Panter 46f50726a0 Issue #27076: Doc, comment and tests spelling fixes
Most fixes to Doc/ and Lib/ directories by Ville Skyttä.
2016-05-26 05:35:26 +00:00
Serhiy Storchaka b0f80b0312 Issue #26647: Python interpreter now uses 16-bit wordcode instead of bytecode.
Patch by Demur Rumed.
2016-05-24 09:15:14 +03:00
Steve Dower 8d0abb9eb6 Issue #26073: Updates magic number comment in _bootstrap_external.py and changes numbers in launcher.py to decimal to match official table. 2016-05-16 09:35:18 -07:00
Steve Dower 7ae61af827 Issue #26073: Updates magic number comment in _bootstrap_external.py and changes numbers in launcher.py to decimal to match official table. 2016-05-16 09:34:20 -07:00