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* Fix syntax warnings in tests introduced in bpo-35942. (GH-11934)Serhiy Storchaka2019-02-191-12/+4
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* Fix syntax warnings in tests introduced in bpo-15248. (GH-11932)Serhiy Storchaka2019-02-193-6/+10
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* bpo-35798: Add test.support.check_syntax_warning(). (#11895)Serhiy Storchaka2019-02-193-52/+43
| | | | | | | It checks that a SyntaxWarning is raised when compile specified statement, that it is raised only once, that it is converted to a SyntaxError when raised as exception, and that both warning and exception objects have corresponding attributes.
* bpo-34572: change _pickle unpickling to use import rather than retrieving ↵tjb9002019-02-181-1/+66
| | | | | from sys.modules (GH-9047) Fix C implementation of pickle.loads to use importlib's locking mechanisms, and thereby avoid using partially-loaded modules.
* bpo-34294: re module, fix wrong capturing groups in rare cases. (GH-11546)animalize2019-02-181-0/+34
| | | | | | Need to reset capturing groups between two SRE(match) callings in loops, this fixes wrong capturing groups in rare cases. Also add a missing index in re.rst.
* bpo-35704: Prevent test_shutil fail result when AIX is 32-bit and MAXDATA < ↵Michael Felt2019-02-181-0/+13
| | | | | 0x20000000 (GH-11500) https://bugs.python.org/issue35704
* bpo-35942: Improve the error message if __fspath__ returns invalid types in ↵Pablo Galindo2019-02-181-1/+18
| | | | | path_converter (GH-11831) The error message emitted when returning invalid types from __fspath__ in interfaces that allow passing PathLike objects has been improved and now it does explain the origin of the error.
* bpo-35992: Use PySequence_GetItem only if sq_item is not NULL (GH-11857)Ivan Levkivskyi2019-02-171-1/+8
| | | | Not using `__class_getitem__()` fallback if there is a non-subcriptable metaclass was caused by a certain asymmetry between how `PySequenceMethods` and `PyMappingMethods` are used in `PyObject_GetItem`. This PR removes this asymmetry. No tests failed, so I assume it was not intentional.
* bpo-36013: delete fragile interactive shell SIGINT test (GH-11902)Gregory P. Smith2019-02-171-33/+7
| | | | | It makes the existing smaller test more readable and robust at the same time. The execution of a shell in interactive mode from CI and buildbot test automation wasn't working out. What would work locally in our terminals would only work within a fraction of automation systems. The integration test was a nice to have. painful. deleting. :)
* bpo-1054041: Exit properly after an uncaught ^C. (#11862)Gregory P. Smith2019-02-161-4/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * bpo-1054041: Exit properly by a signal after a ^C. An uncaught KeyboardInterrupt exception means the user pressed ^C and our code did not handle it. Programs that install SIGINT handlers are supposed to reraise the SIGINT signal to the SIG_DFL handler in order to exit in a manner that their calling process can detect that they died due to a Ctrl-C. https://www.cons.org/cracauer/sigint.html After this change on POSIX systems while true; do python -c 'import time; time.sleep(23)'; done can be stopped via a simple Ctrl-C instead of the shell infinitely restarting a new python process. What to do on Windows, or if anything needs to be done there has not yet been determined. That belongs in its own PR. TODO(gpshead): A unittest for this behavior is still needed. * Do the unhandled ^C check after pymain_free. * Return STATUS_CONTROL_C_EXIT on Windows. * Fix ifdef around unistd.h include. * 📜🤖 Added by blurb_it. * Add STATUS_CTRL_C_EXIT to the os module on Windows * Add unittests. * Don't send CTRL_C_EVENT in the Windows test. It was causing CI systems to bail out of the entire test suite. See https://dev.azure.com/Python/cpython/_build/results?buildId=37980 for example. * Correct posix test (fail on macOS?) check. * STATUS_CONTROL_C_EXIT must be unsigned. * Improve the error message. * test typo :) * Skip if the bash version is too old. ...and rename the windows test to reflect what it does. * min bash version is 4.4, detect no bash. * restore a blank line i didn't mean to delete. * PyErr_Occurred() before the Py_DECREF(co); * Don't add os.STATUS_CONTROL_C_EXIT as a constant. * Update the Windows test comment. * Refactor common logic into a run_eval_code_obj fn.
* bpo-15248: Emit a compiler warning when missed a comma before tuple or list. ↵Serhiy Storchaka2019-02-161-0/+87
| | | | (GH-11757)
* bpo-35931: Gracefully handle SyntaxError in pdb debug command (GH-11782)Daniel Hahler2019-02-151-0/+8
| | | | | | | | Previously, `debug print(` would cause the interpreter to exit on a SyntaxError whereas `print(` would properly display the error and return to the pdb prompt. This patch fixes this by pre-compiling the code before passing it to `Pdb.run`. https://bugs.python.org/issue35931
* bpo-35994: add sub dir for sub2_tree in os.walk test if symlink is not ↵pxinwr2019-02-151-1/+1
| | | | | supported (GH-11853) https://bugs.python.org/issue35994
* bpo-35633: test_lockf() fails with "PermissionError: [Errno 13] Permission ↵Michael Felt2019-02-141-0/+4
| | | | | | | | | | | | denied" on AIX (GH-11424) [bpo-35633](https://bugs.python.org/issue35633): Fix a test regression introduced with [bpo-35189](https://bugs.python.org/issue35189) (PEP 475: fnctl functions are not retried if interrupted (EINTR)). Not only a blocking IO error needs to be ignored - permission errors also need to be ignored. p.s. - iirc as a "test" only correction a NEWS item is not required. If this is not correct - just mention, and I'll add a NEWS blurb. https://bugs.python.org/issue35633
* bpo-18283: Add support for bytes to shutil.which (GH-11818)Cheryl Sabella2019-02-131-4/+17
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* bpo-35505: Skip test_imap4_host_default_value if localhost listens on IMAP ↵Matěj Cepl2019-02-121-0/+10
| | | | | | port (GH-11823) Make test_imap4_host_default_value independent on whether the local IMAP server is running.
* bpo-35972: _xxsubinterpreters: Fix potential integer truncation on 32-bit in ↵Alexey Izbyshev2019-02-121-1/+13
| | | | channel_send() (gh-11822)
* bpo-35960: Fix dataclasses.field throwing away empty metadata. (GH-11815)Christopher Hunt2019-02-121-2/+12
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* bpo-35918: Remove broken has_key method and add test (#11819)Rémi Lapeyre2019-02-121-2/+0
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* bpo-35378: Fix multiprocessing.Pool references (GH-11627)Pablo Galindo2019-02-111-1/+0
| | | | | | | | | Changes in this commit: 1. Use a _strong_ reference between the Pool and associated iterators 2. Rework PR #8450 to eliminate a cycle in the Pool. There is no test in this commit because any test that automatically tests this behaviour needs to eliminate the pool before joining the pool to check that the pool object is garbaged collected/does not hang. But doing this will potentially leak threads and processes (see https://bugs.python.org/issue35413).
* Fix division by 0 when checking for overflow in math.prod (GH-11808)Pablo Galindo2019-02-101-0/+4
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* Make sure the BaseManager in test_multiprocessing is cleaned up correctly ↵Pablo Galindo2019-02-091-15/+20
| | | | (GH-11653)
* Do not retain references to processes and managers in TestSyncManagerTypes ↵Pablo Galindo2019-02-091-0/+2
| | | | | (GH-11801) Keeping references to processes and managers between tests makes them count as dangling processes.
* Rework tuple hash tests. (GH-10161)Tim Peters2019-02-082-84/+308
| | | Add tooling that will useful in future updates, paying particular attention to difficult cases where only the upper bits on the input vary.
* bpo-35615: Fix crashes when copying a Weak{Key,Value}Dictionary. (GH-11384)Fish2019-02-071-0/+82
| | | | | | | | | | Protect dict iterations by wrapping them with _IterationGuard in the following methods: - WeakValueDictionary.copy() - WeakValueDictionary.__deepcopy__() - WeakKeyDictionary.copy() - WeakKeyDictionary.__deepcopy__()
* bpo-35911: add cell constructor (GH-11771)Pierre Glaser2019-02-071-0/+9
| | | | Add a cell constructor, expose the cell type in the types module.
* bpo-24209: In http.server script, rely on getaddrinfo to bind to preferred ↵Jason R. Coombs2019-02-071-13/+55
| | | | | | | address based on the bind parameter. (#11767) In http.server script, rely on getaddrinfo to bind to preferred address based on the bind parameter. As a result, now IPv6 is used as the default (including IPv4 on dual-stack systems). Enhanced tests.
* bpo-35917: Test multiprocessing manager classes and shareable types (GH-11772)Giampaolo Rodola2019-02-071-0/+246
| | | | multiprocessing: provide unittests for manager classes and shareable types
* bpo-35606: Implement math.prod (GH-11359)Pablo Galindo2019-02-071-0/+31
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* bpo-35321: Set the spec origin to frozen in frozen modules (#11732)Nina Zakharenko2019-02-051-0/+11
| | | | | | | | | | * bpo-35321: Set the spec origin to frozen in frozen modules This fix correctly sets the spec origin to "frozen" for the _frozen_importlib module. Note that the origin was already correctly set in _frozen_importlib_external. * 📜🤖 Added by blurb_it.
* bpo-32417: Make timedelta arithmetic respect subclasses (#10902)Paul Ganssle2019-02-041-10/+73
| | | | | | | | | | | | | | | | | | | | | | | | | | * Make timedelta return subclass types Previously timedelta would always return the `date` and `datetime` types, regardless of what it is added to. This makes it return an object of the type it was added to. * Add tests for timedelta arithmetic on subclasses * Make pure python timedelta return subclass types * Add test for fromtimestamp with tz argument * Add tests for subclass behavior in now * Add news entry. Fixes: bpo-32417 bpo-35364 * More descriptive variable names in tests Addresses Victor's comments
* bpo-35872 and bpo-35873: Clears __PYVENV_LAUNCHER__ variable (GH-11745)Steve Dower2019-02-041-9/+2
| | | | After reading __PYVENV_LAUNCHER__ we now set sys._base_executable value for later use. Make the same changes for macOS to avoid extra platform checks.
* bpo-29734: nt._getfinalpathname handle leak (GH-740)Mark Becwar2019-02-021-0/+56
| | | Make sure that failure paths call CloseHandle outside of the function that failed
* bpo-35845: Add order={'C', 'F', 'A'} parameter to memoryview.tobytes(). (#11730)Stefan Krah2019-02-021-0/+15
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* bpo-1104: msilib.SummaryInfo.GetProperty() truncates the string by one ↵Tzu-ping Chung2019-02-021-2/+25
| | | | | | character (GH-4517) Add one char to MsiSummaryInfoGetProperty() output Based on the patch in bpo-1104 by Anthony Tuininga (atuining) and Mark McMahon (markm).
* bpo-35877: Add test for while loop named expression without parentheses ↵Emily Morehouse2019-02-011-1/+7
| | | | (GH-11726)
* bpo-35877: Make parenthesis optional for named expression in while statement ↵Xtreak2019-02-011-0/+1
| | | | | | | | (GH-11724) * Add parenthesis optional in named expressions for while statement * Add NEWS entry
* bpo-35861: Fix SyntaxWarning in test_named_expressions.py (GH-11722)Joannah Nanjekye2019-02-011-1/+1
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* bpo-35537: Skip test_start_new_session() of posix_spawn (GH-11718)Victor Stinner2019-02-011-0/+2
| | | The test fails. Skip the test until a fix can be found.
* bpo-35537: Add setsid parameter to os.posix_spawn() and os.posix_spawnp() ↵Joannah Nanjekye2019-02-011-0/+16
| | | | (GH-11608)
* bpo-35766: Merge typed_ast back into CPython (GH-11645)Guido van Rossum2019-01-313-66/+363
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* bpo-35854: Fix EnvBuilder and --symlinks in venv on Windows (GH-11700)Steve Dower2019-01-301-1/+0
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* Fast path for int inputs to math.dist() and math.hypot() (GH-11692)Raymond Hettinger2019-01-281-1/+10
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* bpo-35780: Fix errors in lru_cache() C code (GH-11623)Raymond Hettinger2019-01-261-1/+28
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* bpo-35797: Fix default executable used by the multiprocessing module (GH-11676)Steve Dower2019-01-251-0/+13
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* bpo-35814: Allow same r.h.s. in annotated assignments as in normal ones ↵Ivan Levkivskyi2019-01-252-1/+10
| | | | | | (GH-11667)
* bpo-35224: PEP 572 Implementation (#10497)Emily Morehouse2019-01-244-5/+458
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Add tokenization of := - Add token to Include/token.h. Add token to documentation in Doc/library/token.rst. - Run `./python Lib/token.py` to regenerate Lib/token.py. - Update Parser/tokenizer.c: add case to handle `:=`. * Add initial usage of := in grammar. * Update Python.asdl to match the grammar updates. Regenerated Include/Python-ast.h and Python/Python-ast.c * Update AST and compiler files in Python/ast.c and Python/compile.c. Basic functionality, this isn't scoped properly * Regenerate Lib/symbol.py using `./python Lib/symbol.py` * Tests - Fix failing tests in test_parser.py due to changes in token numbers for internal representation * Tests - Add simple test for := token * Tests - Add simple tests for named expressions using expr and suite * Tests - Update number of levels for nested expressions to prevent stack overflow * Update symbol table to handle NamedExpr * Update Grammar to allow assignment expressions in if statements. Regenerate Python/graminit.c accordingly using `make regen-grammar` * Tests - Add additional tests for named expressions in RoundtripLegalSyntaxTestCase, based on examples and information directly from PEP 572 Note: failing tests are currently commented out (4 out of 24 tests currently fail) * Tests - Add temporary syntax test failure tests in test_parser.py Note: There is an outstanding TODO for this -- syntax tests need to be moved to a different file (presumably test_syntax.py), but this is covering what needs to be tested at the moment, and it's more convenient to run a single test for the time being * Add support for allowing assignment expressions as function argument annotations. Uncomment tests for these cases because they all pass now! * Tests - Move existing syntax tests out of test_parser.py and into test_named_expressions.py. Refactor syntax tests to use unittest * Add TargetScopeError exception to extend SyntaxError Note: This simply creates the TargetScopeError exception, it is not yet used anywhere * Tests - Update tests per PEP 572 Continue refactoring test suite: The named expression test suite now checks for any invalid cases that throw exceptions (no longer limited to SyntaxErrors), assignment tests to ensure that variables are properly assigned, and scope tests to ensure that variable availability and values are correct Note: - There are still tests that are marked to skip, as they are not yet implemented - There are approximately 300 lines of the PEP that have not yet been addressed, though these may be deferred * Documentation - Small updates to XXX/todo comments - Remove XXX from child description in ast.c - Add comment with number of previously supported nested expressions for 3.7.X in test_parser.py * Fix assert in seq_for_testlist() * Cleanup - Denote "Not implemented -- No keyword args" on failing test case. Fix PEP8 error for blank lines at beginning of test classes in test_parser.py * Tests - Wrap all file opens in `with...as` to ensure files are closed * WIP: handle f(a := 1) * Tests and Cleanup - No longer skips keyword arg test. Keyword arg test now uses a simpler test case and does not rely on an external file. Remove print statements from ast.c * Tests - Refactor last remaining test case that relied on on external file to use a simpler test case without the dependency * Tests - Add better description of remaning skipped tests. Add test checking scope when using assignment expression in a function argument * Tests - Add test for nested comprehension, testing value and scope. Fix variable name in skipped comprehension scope test * Handle restriction of LHS for named expressions - can only assign to LHS of type NAME. Specifically, restrict assignment to tuples This adds an alternative set_context specifically for named expressions, set_namedexpr_context. Thus, context is now set differently for standard assignment versus assignment for named expressions in order to handle restrictions. * Tests - Update negative test case for assigning to lambda to match new error message. Add negative test case for assigning to tuple * Tests - Reorder test cases to group invalid syntax cases and named assignment target errors * Tests - Update test case for named expression in function argument - check that result and variable are set correctly * Todo - Add todo for TargetScopeError based on Guido's comment (https://github.com/python/cpython/commit/2b3acd37bdfc2d35e5094228c6684050d2aa8b0a#r30472562) * Tests - Add named expression tests for assignment operator in function arguments Note: One of two tests are skipped, as function arguments are currently treating an assignment expression inside of parenthesis as one child, which does not properly catch the named expression, nor does it count arguments properly * Add NamedStore to expr_context. Regenerate related code with `make regen-ast` * Add usage of NamedStore to ast_for_named_expr in ast.c. Update occurances of checking for Store to also handle NamedStore where appropriate * Add ste_comprehension to _symtable_entry to track if the namespace is a comprehension. Initialize ste_comprehension to 0. Set set_comprehension to 1 in symtable_handle_comprehension * s/symtable_add_def/symtable_add_def_helper. Add symtable_add_def to handle grabbing st->st_cur and passing it to symtable_add_def_helper. This now allows us to call the original code from symtable_add_def by instead calling symtable_add_def_helper with a different ste. * Refactor symtable_record_directive to take lineno and col_offset as arguments instead of stmt_ty. This allows symtable_record_directive to be used for stmt_ty and expr_ty * Handle elevating scope for named expressions in comprehensions. * Handle error for usage of named expression inside a class block * Tests - No longer skip scope tests. Add additional scope tests * Cleanup - Update error message for named expression within a comprehension within a class. Update comments. Add assert for symtable_extend_namedexpr_scope to validate that we always find at least a ModuleScope if we don't find a Class or FunctionScope * Cleanup - Add missing case for NamedStore in expr_context_name. Remove unused var in set_namedexpr_content * Refactor - Consolidate set_context and set_namedexpr_context to reduce duplicated code. Special cases for named expressions are handled by checking if ctx is NamedStore * Cleanup - Add additional use cases for ast_for_namedexpr in usage comment. Fix multiple blank lines in test_named_expressions * Tests - Remove unnecessary test case. Renumber test case function names * Remove TargetScopeError for now. Will add back if needed * Cleanup - Small comment nit for consistency * Handle positional argument check with named expression * Add TargetScopeError exception definition. Add documentation for TargetScopeError in c-api docs. Throw TargetScopeError instead of SyntaxError when using a named expression in a comprehension within a class scope * Increase stack size for parser by 200. This is a minimal change (approx. 5kb) and should not have an impact on any systems. Update parser test to allow 99 nested levels again * Add TargetScopeError to exception_hierarchy.txt for test_baseexception.py_ * Tests - Major update for named expression tests, both in test_named_expressions and test_parser - Add test for TargetScopeError - Add tests for named expressions in comprehension scope and edge cases - Add tests for named expressions in function arguments (declarations and call sites) - Reorganize tests to group them more logically * Cleanup - Remove unnecessary comment * Cleanup - Comment nitpicks * Explicitly disallow assignment expressions to a name inside parentheses, e.g.: ((x) := 0) - Add check for LHS types to detect a parenthesis then a name (see note) - Add test for this scenario - Update tests for changed error message for named assignment to a tuple (also, see note) Note: This caused issues with the previous error handling for named assignment to a LHS that contained an expression, such as a tuple. Thus, the check for the LHS of a named expression must be changed to be more specific if we wish to maintain the previous error messages * Cleanup - Wrap lines more strictly in test file * Revert "Explicitly disallow assignment expressions to a name inside parentheses, e.g.: ((x) := 0)" This reverts commit f1531400ca7d7a2d148830c8ac703f041740896d. * Add NEWS.d entry * Tests - Fix error in test_pickle.test_exceptions by adding TargetScopeError to list of exceptions * Tests - Update error message tests to reflect improved messaging convention (s/can't/cannot) * Remove cases that cannot be reached in compile.c. Small linting update. * Update Grammar/Tokens to add COLONEQUAL. Regenerate all files * Update TargetScopeError PRE_INIT and POST_INIT, as this was purposefully left out when fixing rebase conflicts * Add NamedStore back and regenerate files * Pass along line number and end col info for named expression * Simplify News entry * Fix compiler warning and explicity mark fallthrough
* bpo-35717: Fix KeyError exception raised when using enums and compile (GH-11523)Rémi Lapeyre2019-01-241-0/+9
| | | https://bugs.python.org/issue17467
* bpo-35683: Improve Azure Pipelines steps (GH-11493)Steve Dower2019-01-222-2/+7
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* bpo-33416: Add end positions to Python AST (GH-11605)Ivan Levkivskyi2019-01-223-23/+339
| | | | | | | | | | | | | | | | | | The majority of this PR is tediously passing `end_lineno` and `end_col_offset` everywhere. Here are non-trivial points: * It is not possible to reconstruct end positions in AST "on the fly", some information is lost after an AST node is constructed, so we need two more attributes for every AST node `end_lineno` and `end_col_offset`. * I add end position information to both CST and AST. Although it may be technically possible to avoid adding end positions to CST, the code becomes more cumbersome and less efficient. * Since the end position is not known for non-leaf CST nodes while the next token is added, this requires a bit of extra care (see `_PyNode_FinalizeEndPos`). Unless I made some mistake, the algorithm should be linear. * For statements, I "trim" the end position of suites to not include the terminal newlines and dedent (this seems to be what people would expect), for example in ```python class C: pass pass ``` the end line and end column for the class definition is (2, 8). * For `end_col_offset` I use the common Python convention for indexing, for example for `pass` the `end_col_offset` is 4 (not 3), so that `[0:4]` gives one the source code that corresponds to the node. * I added a helper function `ast.get_source_segment()`, to get source text segment corresponding to a given AST node. It is also useful for testing. An (inevitable) downside of this PR is that AST now takes almost 25% more memory. I think however it is probably justified by the benefits.
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