Commit Graph

50 Commits

Author SHA1 Message Date
Brett Cannon 8425de4147
bpo-33562: Check the global asyncio event loop policy isn't set after any tests (GH-7328) 2018-06-01 20:34:09 -07:00
Zsolt Dollenstein e239650660 bpo-33363: raise SyntaxError for async for/with outside async functions (#6616) 2018-04-27 11:58:56 -04:00
Serhiy Storchaka 2eeac269dd
bpo-29922: Add more tests for error messages in 'async with'. (GH-6370)
Different paths are executed for normal exit and for leaving
the 'async with' block with 'break', 'continue' or 'return'.
2018-04-04 18:45:10 +03:00
Serhiy Storchaka a68f2f0578
bpo-29922: Improve error messages in 'async with' (GH-6352)
when __aenter__() or __aexit__() return non-awaitable object.
2018-04-03 01:41:38 +03:00
Serhiy Storchaka 702f8f3611
bpo-33041: Rework compiling an "async for" loop. (#6142)
* Added new opcode END_ASYNC_FOR.
* Setting global StopAsyncIteration no longer breaks "async for" loops.
* Jumping into an "async for" loop is now disabled.
* Jumping out of an "async for" loop no longer corrupts the stack.
* Simplify the compiler.
2018-03-23 14:34:35 +02:00
Serhiy Storchaka 24d3201eb7
bpo-33041: Fixed bytecode generation for "async for" with a complex target. (#6052)
A StopAsyncIteration raised on assigning or unpacking will be now propagated
instead of stopping the iteration.
2018-03-10 18:22:34 +02:00
Nathaniel J. Smith 2efb973589
bpo-32733: Make test_coroutines robust against -Werror (GH-5487) 2018-02-01 20:55:55 -08:00
Yury Selivanov 2a2270db9b
bpo-32703: Fix coroutine resource warning in case where there's an error (GH-5410)
The commit removes one unnecessary "if" clause in genobject.c.  That "if" clause was masking un-awaited coroutines warnings just to make writing unittests more convenient.
2018-01-29 14:31:47 -05:00
Nathaniel J. Smith 95e214713a
bpo-32591: silence deprecation warnings in test_coroutine (GH-5412) 2018-01-28 23:34:26 -08:00
Nathaniel J. Smith dba976b8a2 bpo-32591: fix abort in _PyErr_WarnUnawaitedCoroutine during shutdown (#5337)
When an unawaited coroutine is collected very late in shutdown --
like, during the final GC at the end of PyImport_Cleanup -- then it
was triggering an interpreter abort, because we'd try to look up the
"warnings" module and not only was it missing (we were prepared for
that), but the entire module system was missing (which we were not
prepared for).

I've tried to fix this at the source, by making the utility function
get_warnings_attr robust against this in general. Note that it already
has the convention that it can return NULL without setting an error,
which is how it signals that the attribute it was asked to fetch is
missing, and that all callers already check for NULL returns.

There's a similar check for being late in shutdown at the top of
warn_explicit, which might be unnecessary after this fix, but I'm not
sure so I'm going to leave it.
2018-01-26 14:28:31 -05:00
Nathaniel J. Smith fc2f407829 bpo-32591: Add native coroutine origin tracking (#5250)
* Add coro.cr_origin and sys.set_coroutine_origin_tracking_depth
* Use coroutine origin information in the unawaited coroutine warning
* Stop using set_coroutine_wrapper in asyncio debug mode
* In BaseEventLoop.set_debug, enable debugging in the correct thread
2018-01-21 09:44:07 -05:00
Yury Selivanov b8ab9d3fc8 bpo-31708: Allow async generator expressions in synchronous functions (#3905) 2017-10-06 02:58:28 -04:00
Yury Selivanov faa135acbf bpo-31709: Drop support for asynchronous __aiter__. (#3903) 2017-10-06 02:08:57 -04:00
Jelle Zijlstra ac317700ce bpo-30406: Make async and await proper keywords (#1669)
Per PEP 492, 'async' and 'await' should become proper keywords in 3.7.
2017-10-05 23:24:46 -04:00
Serhiy Storchaka 24c738a9e9 bpo-29845: Mark tests that use _testcapi as CPython-only (#711) 2017-03-19 20:20:10 +02:00
Yury Selivanov b7c9150b68 Fix wrapping into StopIteration of return values in generators and coroutines (#644) 2017-03-12 15:53:07 -04:00
Yury Selivanov 398ff91ac0 bpo-28893: Set __cause__ for errors in async iteration protocol (#407) 2017-03-02 22:20:00 -05:00
Yury Selivanov 2edd8a1e2c Issue #27243: Change PendingDeprecationWarning -> DeprecationWarning.
As it was agreed in the issue, __aiter__ returning an awaitable
should result in PendingDeprecationWarning in 3.5 and in
DeprecationWarning in 3.6.
2016-11-08 15:13:07 -05:00
Serhiy Storchaka 60e49aa756 Issue #23996: Added _PyGen_SetStopIterationValue for safe raising
StopIteration with value. More safely handle non-normalized exceptions
in -_PyGen_FetchStopIterationValue.
2016-11-06 18:47:03 +02:00
Serhiy Storchaka 24411f8a8d Issue #23996: Added _PyGen_SetStopIterationValue for safe raising
StopIteration with value. More safely handle non-normalized exceptions
in -_PyGen_FetchStopIterationValue.
2016-11-06 18:44:42 +02:00
Yury Selivanov 8987c9d219 Issue #26182: Raise DeprecationWarning for improper use of async/await keywords 2016-09-15 12:50:23 -04:00
Yury Selivanov 52c4e7cc84 Issue #28008: Implement PEP 530 -- asynchronous comprehensions. 2016-09-09 10:36:01 -07:00
Yury Selivanov eb6364557f Issue #28003: Implement PEP 525 -- Asynchronous Generators. 2016-09-08 22:01:51 -07:00
Benjamin Peterson 48c88307d8 capture stderr to silence output during test_coroutines (closes #27968) 2016-09-07 09:00:48 -07:00
Benjamin Peterson 2f40ed4b94 do not allow _PyGen_Finalize to fail (closes #27811)
Patch from Armin Rigo.
2016-09-05 10:14:54 -07:00
R David Murray 44b548dda8 #27364: fix "incorrect" uses of escape character in the stdlib.
And most of the tools.

Patch by Emanual Barry, reviewed by me, Serhiy Storchaka, and
Martin Panter.
2016-09-08 13:59:53 -04:00
Martin Panter 70c502aacf Fix typos and English grammar in documentation and code comment 2016-06-12 06:14:03 +00:00
Yury Selivanov a6f6edbda8 Issue #27243: Fix __aiter__ protocol 2016-06-09 15:08:31 -04:00
Yury Selivanov c724bae51c coroutines: Error when awaiting on coroutine that's being awaited
Issue #25888
2016-03-02 11:30:46 -05:00
Yury Selivanov 77c96813ab Issue #25887: Raise a RuntimeError when a coroutine is awaited more than once. 2016-02-13 17:59:05 -05:00
Serhiy Storchaka 609a2e17ad Issue #22995: Default implementation of __reduce__ and __reduce_ex__ now
rejects builtin types with not defined __new__.
Added tests for non-pickleable types.
2015-11-12 11:31:51 +02:00
Victor Stinner 718c984e6e Close #25367: Fix test_coroutines()
Fix usage of support.import_module('asyncio'): store the result in an 'asyncio'
variable.
2015-10-11 10:53:15 +02:00
Victor Stinner b45c0f7e48 Close #25367: Fix test_coroutines with no thread support
Skip test_asyncio_1() when the asyncio module cannot be imported because
CPython is compiled with no thread support.
2015-10-11 10:10:31 +02:00
Yury Selivanov 96ec934e75 Issue #24619: Simplify async/await tokenization.
This commit simplifies async/await tokenization in tokenizer.c,
tokenize.py & lib2to3/tokenize.py.  Previous solution was to keep
a stack of async-def & def blocks, whereas the new approach is just
to remember position of the outermost async-def block.

This change won't bring any parsing performance improvements, but
it makes the code much easier to read and validate.
2015-07-23 15:01:58 +03:00
Yury Selivanov f315c1c016 Issue #24687: Plug refleak on SyntaxError in function parameters annotations. 2015-07-23 09:10:44 +03:00
Yury Selivanov b7666a3093 Issue #24619: More tests; fix nits in compiler.c 2015-07-22 14:48:57 +03:00
Yury Selivanov 8fb307cd65 Issue #24619: New approach for tokenizing async/await.
This commit fixes how one-line async-defs and defs are tracked
by tokenizer.  It allows to correctly parse invalid code such
as:

>>> async def f():
...     def g(): pass
...     async = 10

and valid code such as:

>>> async def f():
...     async def g(): pass
...     await z

As a consequence, is is now possible to have one-line
'async def foo(): await ..' functions:

>>> async def foo(): return await bar()
2015-07-22 13:33:45 +03:00
Yury Selivanov e13f8f3cab Issue #24450: Add gi_yieldfrom to generators; cr_await to coroutines.
Patch by Benno Leslie and Yury Selivanov.
2015-07-03 00:23:30 -04:00
Yury Selivanov f27015255f Issue #24400: Add one more unittest for CoroutineType.__await__ 2015-07-01 12:29:55 -04:00
Yury Selivanov 86cd7d6b75 test_coroutines: remove whitespace 2015-06-30 12:51:12 -04:00
Yury Selivanov 9dec03571f Issue #24528: Improve error message for awaits in comprehensions 2015-06-30 12:49:04 -04:00
Yury Selivanov 5376ba9630 Issue #24400: Introduce a distinct type for 'async def' coroutines.
Summary of changes:

1. Coroutines now have a distinct, separate from generators
   type at the C level: PyGen_Type, and a new typedef PyCoroObject.
   PyCoroObject shares the initial segment of struct layout with
   PyGenObject, making it possible to reuse existing generators
   machinery.  The new type is exposed as 'types.CoroutineType'.

   As a consequence of having a new type, CO_GENERATOR flag is
   no longer applied to coroutines.

2. Having a separate type for coroutines made it possible to add
   an __await__ method to the type.  Although it is not used by the
   interpreter (see details on that below), it makes coroutines
   naturally (without using __instancecheck__) conform to
   collections.abc.Coroutine and collections.abc.Awaitable ABCs.

   [The __instancecheck__ is still used for generator-based
   coroutines, as we don't want to add __await__ for generators.]

3. Add new opcode: GET_YIELD_FROM_ITER.  The opcode is needed to
   allow passing native coroutines to the YIELD_FROM opcode.

   Before this change, 'yield from o' expression was compiled to:

      (o)
      GET_ITER
      LOAD_CONST
      YIELD_FROM

   Now, we use GET_YIELD_FROM_ITER instead of GET_ITER.

   The reason for adding a new opcode is that GET_ITER is used
   in some contexts (such as 'for .. in' loops) where passing
   a coroutine object is invalid.

4. Add two new introspection functions to the inspec module:
   getcoroutinestate(c) and getcoroutinelocals(c).

5. inspect.iscoroutine(o) is updated to test if 'o' is a native
   coroutine object.  Before this commit it used abc.Coroutine,
   and it was requested to update inspect.isgenerator(o) to use
   abc.Generator; it was decided, however, that inspect functions
   should really be tailored for checking for native types.

6. sys.set_coroutine_wrapper(w) API is updated to work with only
   native coroutines.  Since types.coroutine decorator supports
   any type of callables now, it would be confusing that it does
   not work for all types of coroutines.

7. Exceptions logic in generators C implementation was updated
   to raise clearer messages for coroutines:

   Before: TypeError("generator raised StopIteration")
   After: TypeError("coroutine raised StopIteration")
2015-06-22 12:19:30 -04:00
Yury Selivanov 94c2263005 Issue 24374: Plug refleak in set_coroutine_wrapper 2015-06-04 10:16:51 -04:00
Yury Selivanov aab3c4a211 Issue 24342: Let wrapper set by sys.set_coroutine_wrapper fail gracefully 2015-06-02 18:43:51 -04:00
Yury Selivanov 8085b80c18 Issue 24226: Fix parsing of many sequential one-line 'def' statements. 2015-05-18 12:50:52 -04:00
Yury Selivanov 9113dc7c97 Issue 24017: More tests for 'async for' and 'async with'. 2015-05-13 16:49:35 -04:00
Zachary Ware 37ac590f7c Clean up test_coroutines a bit.
No more test_main(), s/assertEquals/assertEqual/, and remove unused import.
2015-05-13 01:03:06 -05:00
Nick Coghlan baaadbf70d Issue 24017: fix for "async with" refcounting
* adds missing INCREF in WITH_CLEANUP_START
* adds missing DECREF in WITH_CLEANUP_FINISH
* adds several new tests Yury created while investigating this
2015-05-13 15:54:02 +10:00
Yury Selivanov fdba8381ff Issue #24017: Unset asyncio event loop after test. 2015-05-12 14:28:08 -04:00
Yury Selivanov 7544508f02 PEP 0492 -- Coroutines with async and await syntax. Issue #24017. 2015-05-11 22:57:16 -04:00