Commit Graph

30 Commits

Author SHA1 Message Date
Ngalim Siregar c5fa44944e bpo-37444: Update differing exception between builtins and importlib (GH-14869)
Imports now raise `TypeError` instead of `ValueError` for relative import failures. This makes things consistent between `builtins.__import__` and `importlib.__import__` as well as using a more natural import for the failure.


https://bugs.python.org/issue37444



Automerge-Triggered-By: @brettcannon
2019-08-02 22:46:02 -07:00
Zackery Spytz fffeb6f3d6 bpo-30436: Add missing space in importlib.util.find_spec() error message (GH-7385) 2018-06-07 02:02:24 -04:00
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
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
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
Brett Cannon e5f4d3c246 Merge for issue #26186 2016-02-20 18:37:04 -08:00
Brett Cannon 558823a0cf Issue #26186: Remove an invalid type check in
importlib.util.LazyLoader.

The class was checking its argument as to whether its implementation
of create_module() came directly from importlib.abc.Loader. The
problem is that the classes coming from imoprtlib.machinery do not
directly inherit from the ABC as they come from _frozen_importlib.
Because the documentation has always said that create_module() was
ignored, the check has simply been removed.
2016-02-20 18:35:41 -08:00
Brett Cannon 65ca88e4e0 Issue #25771: Tweak ValueError message when package isn't specified
for importlib.util.resolve_name() but is needed.

Thanks to Martin Panter for the bug report.
2015-12-04 15:19:42 -08:00
Eric Snow 32439d6eb6 Issue #23911: Move path-based bootstrap code to a separate frozen module. 2015-05-02 19:15:18 -06:00
Serhiy Storchaka c4464052d9 Issue #19720: Suppressed context for some exceptions in importlib. 2014-11-21 20:33:57 +02:00
Brett Cannon 2a17bde930 Issue #20383: Introduce importlib.util.module_from_spec().
Along the way, dismantle importlib._bootstrap._SpecMethods as it was
no longer relevant and constructing the new function required
partially dismantling the class anyway.
2014-05-30 14:55:29 -04:00
Brett Cannon a04dbe4fe7 Issue #17621: Introduce importlib.util.LazyLoader. 2014-04-04 13:53:38 -04:00
Eric Snow 6029e08691 Issue 19944: Fix importlib.find_spec() so it imports parents as needed.
The function is also moved to importlib.util.
2014-01-25 15:32:46 -07:00
Eric Snow 1500d49c22 Issue 19713: Add PEP 451-related deprecations. 2014-01-06 20:49:04 -07:00
Eric Snow b523f8433a Implement PEP 451 (ModuleSpec). 2013-11-22 09:05:39 -07:00
Brett Cannon f24fecd4ac Issue #18076: Introduce imoportlib.util.decode_source().
The helper function makes it easier to implement
imoprtlib.abc.InspectLoader.get_source() by making that function
require just the raw bytes for source code and handling all other
details.
2013-06-16 18:37:53 -04:00
Brett Cannon a3c96154d2 Issue #17907: touch up the code for imp.new_module(). 2013-06-14 22:26:30 -04:00
Brett Cannon 05a647deed Issue #18192: Introduce importlib.util.MAGIC_NUMBER and document the
deprecation of imp.get_magic().
2013-06-14 19:02:34 -04:00
Brett Cannon 0e75c06886 fix whitespace 2013-05-31 18:57:45 -04:00
Brett Cannon 0dbb4c7f13 Issues #18088, 18089: Introduce
importlib.abc.Loader.init_module_attrs() and implement
importlib.abc.InspectLoader.load_module().

The importlib.abc.Loader.init_module_attrs() method sets the various
attributes on the module being loaded. It is done unconditionally to
support reloading. Typically people used
importlib.util.module_for_loader, but since that's a decorator there
was no way to override it's actions, so init_module_attrs() came into
existence to allow for overriding. This is also why module_for_loader
is now pending deprecation (having its other use replaced by
importlib.util.module_to_load).

All of this allowed for importlib.abc.InspectLoader.load_module() to
be implemented. At this point you can now implement a loader with
nothing more than get_code() (which only requires get_source();
package support requires is_package()). Thanks to init_module_attrs()
the implementation of load_module() is basically a context manager
containing 2 methods calls, a call to exec(), and a return statement.
2013-05-31 18:56:47 -04:00
Brett Cannon 357c9fb055 Rename importlib.util.ModuleManager to module_to_load so that the name
explains better what the context manager is providing.
2013-05-30 17:31:47 -04:00
Brett Cannon a3687f0d68 Introduce importlib.util.ModuleManager which is a context manager to
handle providing (and cleaning up if needed) the module to be loaded.

A future commit will use the context manager in
Lib/importlib/_bootstrap.py and thus why the code is placed there
instead of in Lib/importlib/util.py.
2013-05-28 17:29:34 -04:00
Brett Cannon d200bf534b Add importlib.util.resolve_name(). 2012-05-13 13:45:09 -04:00
Barry Warsaw 28a691b7fd PEP 3147 2010-04-17 00:19:56 +00:00
Brett Cannon 2cf03a8204 Implement importlib.util.set_loader: a decorator to automatically set
__loader__ on modules.
2009-03-10 05:17:37 +00:00
Brett Cannon 435aad878c Rename importlib.util.set___package__ to set_package. 2009-03-04 16:07:00 +00:00
Brett Cannon 57b46f5b0e Expose importlib.util.set___package__. 2009-03-02 14:38:26 +00:00
Brett Cannon d2e7b33815 Implement the more specific PEP 302 semantics for loaders and what happens upon
load failure in relation to reloads. Also expose
importlib.util.module_for_loader to handle all of the details of this along
with making sure all current loaders behave nicely.
2009-02-17 02:45:03 +00:00