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.
While a rare potential failure (it requires swapping out zlib.decompress() itself and forcing it to return a non-bytes object), this change prevents a potential C-level assertion failure and instead substitutes it with an exception.
Thanks to Oren Milman for the patch.
Previously zipimport mistakenly limited namespace support to only the
top-level of the zipfile when it should have supported an arbitrary
depth.
Thanks to Phil Connel for the bug report and initial patch and Mike
Romberg for the final patch.
The concept of .pyo files no longer exists. Now .pyc files have an
optional `opt-` tag which specifies if any extra optimizations beyond
the peepholer were applied.
None on Windows.
When the file is not readable, the error occurs at open on UNIX. On Windows,
the error only occurs at the first operation on the open file. It would require
to many changes to set __context__ to an OSError for all file operations, for a
little benefit (__context__ is almost never used).
is modified during the lifetime of the Python process after zipimport has
already cached the zip's table of contents we detect this and recover
rather than read bad data from the .zip (causing odd import errors).
is modified during the lifetime of the Python process after zipimport has
already cached the zip's table of contents we detect this and recover
rather than read bad data from the .zip (causing odd import errors).
We don't need to create a temporary buffered binary or text file object just to
create an empty file.
Replace also os.fdopen(handle).close() by os.close(handle).
svn+ssh://pythondev@svn.python.org/python/trunk
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r78018 | georg.brandl | 2010-02-06 11:08:21 +0100 (Sa, 06 Feb 2010) | 1 line
#7864: make deprecation notices a bit clearer.
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r78035 | georg.brandl | 2010-02-06 23:44:17 +0100 (Sa, 06 Feb 2010) | 1 line
Fix duplicate import.
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r78036 | georg.brandl | 2010-02-06 23:49:47 +0100 (Sa, 06 Feb 2010) | 1 line
Remove unused import.
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r78037 | georg.brandl | 2010-02-06 23:59:15 +0100 (Sa, 06 Feb 2010) | 1 line
No need to assign the results of expressions used only for side effects.
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r78038 | georg.brandl | 2010-02-07 00:02:29 +0100 (So, 07 Feb 2010) | 1 line
Add a missing import.
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r78039 | georg.brandl | 2010-02-07 00:06:24 +0100 (So, 07 Feb 2010) | 1 line
Add missing imports.
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r78040 | georg.brandl | 2010-02-07 00:08:00 +0100 (So, 07 Feb 2010) | 1 line
Fix a few UnboundLocalErrors in test_long.
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r78042 | georg.brandl | 2010-02-07 00:12:12 +0100 (So, 07 Feb 2010) | 1 line
Add missing import.
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r78043 | georg.brandl | 2010-02-07 00:12:19 +0100 (So, 07 Feb 2010) | 1 line
Remove duplicate test method.
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r78046 | georg.brandl | 2010-02-07 00:18:00 +0100 (So, 07 Feb 2010) | 1 line
Fix various missing import/unbound name errors.
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r78048 | georg.brandl | 2010-02-07 00:23:45 +0100 (So, 07 Feb 2010) | 1 line
We heard you like test failures so we put unbound locals in your test so that you can fail while you fail.
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r78049 | georg.brandl | 2010-02-07 00:33:33 +0100 (So, 07 Feb 2010) | 1 line
Fix import/access for some identifiers. _TestSharedCTypes does not seem to be executed?
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r78050 | georg.brandl | 2010-02-07 00:34:10 +0100 (So, 07 Feb 2010) | 1 line
Fix more unbound locals in code paths that do not seem to be used.
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r78051 | georg.brandl | 2010-02-07 00:53:52 +0100 (So, 07 Feb 2010) | 1 line
Add missing import when running these tests standalone.
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r78052 | georg.brandl | 2010-02-07 00:54:04 +0100 (So, 07 Feb 2010) | 1 line
Add missing import when running these tests standalone.
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r78054 | georg.brandl | 2010-02-07 00:58:25 +0100 (So, 07 Feb 2010) | 1 line
Add missing import.
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r78059 | georg.brandl | 2010-02-07 12:34:15 +0100 (So, 07 Feb 2010) | 1 line
Use "regexp" consistently.
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r78075 | georg.brandl | 2010-02-07 13:16:12 +0100 (So, 07 Feb 2010) | 1 line
Fix another duplicated test method.
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r78076 | georg.brandl | 2010-02-07 13:19:43 +0100 (So, 07 Feb 2010) | 1 line
Fix wrong usage of "except X, Y:".
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r78077 | georg.brandl | 2010-02-07 13:25:50 +0100 (So, 07 Feb 2010) | 1 line
Fix two redefined test methods.
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r78078 | georg.brandl | 2010-02-07 13:27:06 +0100 (So, 07 Feb 2010) | 1 line
Fix a redefined test method.
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r78079 | georg.brandl | 2010-02-07 13:34:26 +0100 (So, 07 Feb 2010) | 1 line
Add a minimal test for fnmatchcase().
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r78080 | georg.brandl | 2010-02-07 13:55:12 +0100 (So, 07 Feb 2010) | 1 line
Remove duplicate test method.
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svn+ssh://pythondev@svn.python.org/python/trunk
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r69425 | nick.coghlan | 2009-02-08 13:17:00 +1000 (Sun, 08 Feb 2009) | 1 line
Issue #4512 closeout: Make ZipImport.get_filename() a public method
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Karthikeyan Singaravelan
Serhiy Storchaka
Zackery Spytz
Benjamin Peterson
Oren Milman
Berker Peksag
Steve Dower
Brett Cannon
Robert Collins
Victor Stinner
Gregory P. Smith
Zachary Ware
Andrew Svetlov
R David Murray
Antoine Pitrou
Victor Stinner
Ezio Melotti
Barry Warsaw
Georg Brandl
Nick Coghlan