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157 Commits

Author SHA1 Message Date
Joongi Kim 6e8dcdaaa4
bpo-41229: Update docs for explicit aclose()-required cases and add contextlib.aclosing() method (GH-21545) 
This is a PR to:

 * Add `contextlib.aclosing` which ia analogous to `contextlib.closing` but for async-generators with an explicit test case for [bpo-41229]()
 * Update the docs to describe when we need explicit `aclose()` invocation.

which are motivated by the following issues, articles, and examples:

 * [bpo-41229]()
 * https://github.com/njsmith/async_generator
 * https://vorpus.org/blog/some-thoughts-on-asynchronous-api-design-in-a-post-asyncawait-world/#cleanup-in-generators-and-async-generators
 * https://www.python.org/dev/peps/pep-0533/
 * https://github.com/achimnol/aiotools/blob/ef7bf0cea7af/src/aiotools/context.py#L152

Particuarly regarding [PEP-533](https://www.python.org/dev/peps/pep-0533/), its acceptance (`__aiterclose__()`) would make this little addition of `contextlib.aclosing()` unnecessary for most use cases, but until then this could serve as a good counterpart and analogy to `contextlib.closing()`. The same applies for `contextlib.closing` with `__iterclose__()`.
Also, still there are other use cases, e.g., when working with non-generator objects with `aclose()` methods.
 2020-11-02 00:02:48 -08:00
kj 9129af6050
bpo-42198: Link to GenericAlias in typing and expressions (GH-23030) 
Follow up to 7cdf30fff3 and 4173320920. This addresses the point "1. Update links in typing, subscription and union to point to GenericAlias." in the bpo for this PR.
 2020-10-29 21:01:17 -07:00
kj 7cdf30fff3
bpo-42010: [docs] Clarify subscription of types (GH-22822) 2020-10-20 16:38:08 -07:00
Florian Dahlitz 2d55aa9e37
bpo-29981: Add examples and update index for set, dict, and generator comprehensions'(GH-20272) 
Co-authored-by: Rémi Lapeyre <remi.lapeyre@henki.fr>
 2020-10-20 17:27:07 -04:00
Victor Stinner 8af239eacf
bpo-41762: Fix usage of productionlist markup in the doc (GH-22281) 
Use an unique identifier for the different grammars documented using
the Sphinx productionlist markup.

productionlist markups of the same grammar, like "expressions" or
"compound statements", use the same identifier "python-grammar".
 2020-09-18 09:10:15 +02:00
Shankar Jha f117cef25b
bpo-39868: Add documentation for Assignment Expressions (walrus, PEP 572) (#18851) 2020-07-25 16:33:48 -07:00
Mark Dickinson 810f68f128
Fix misinformation about NaN != NaN comparison (GH-19357) 2020-04-05 10:25:24 +01:00
Mathieu Dupuy c49016e67c
fix comma location in various places (GH-19233) 2020-03-30 14:28:25 -07:00
Brandt Bucher 8bae21962b
bpo-39868: Update Language Reference for PEP 572. (#18793) 2020-03-05 21:19:22 -08:00
Emily Morehouse 6357c95716 bpo-35224: Additional documentation for Assignment Expressions (GH-15935) 
Add or update assignment expression documentation for:
- FAQ - Design
- Reference - Expressions
- Reference - Lexical Analysis


https://bugs.python.org/issue35224



Automerge-Triggered-By: @matrixise
 2019-09-11 07:37:12 -07:00
Andre Delfino dc26997109 bpo-33459: Fix "tuple displays" term in Expressions.rst (GH-6760) 
https://bugs.python.org/issue33459



Automerge-Triggered-By: @matrixise
 2019-09-11 06:16:11 -07:00
Raymond Hettinger edd21129dd
bpo-32118: Simplify docs for sequence comparison (GH-15450) 2019-08-24 10:43:55 -07:00
Jörn Heissler c8a35417db bpo-35224: Reverse evaluation order of key: value in dict comprehensions (GH-14139) 
… as proposed in PEP 572; key is now evaluated before value.





https://bugs.python.org/issue35224
 2019-06-22 07:40:55 -07:00
Antti Haapala 2f5b9dcc0a bpo-30969: Fix docs about the comparison in absence of __contains__ (GH-2761) 2019-05-30 16:19:28 -04:00
divyag9 778a910758 bpo-34682: Wording and grammatical changes to the doc(https://docs.python.org/3) (GH-13120) 
https://bugs.python.org/issue34682
 2019-05-13 06:05:20 -07:00
Johnny Gérard 4ef9b8e505 Correct misspelling (GH-11470) 2019-05-12 23:39:32 -04:00
Serhiy Storchaka 2b57c43f21
bpo-35506: Remove redundant and incorrect links from keywords. (GH-11174) 2018-12-19 08:09:46 +02:00
Andre Delfino 55f41e45b4 Correct a couple of unbalanced parenthesis. (GH-10779) 2018-12-05 21:45:30 +02:00
Andrés Delfino bfe1839aa9 Add link to PEP 525 in Expressions. (GH-10333) 2018-11-07 20:12:12 +02:00
Serhiy Storchaka 913876d824
bpo-35054: Add yet more index entries for symbols. (GH-10121) 2018-10-28 13:41:26 +02:00
Serhiy Storchaka ddb961d2ab
bpo-35054: Add more index entries for symbols. (GH-10064) 2018-10-26 09:00:49 +03:00
Tony Flury ad8a000420 closes bpo-28955: Clarified comparisons between NaN and number in reference documentation (GH-5982) 
Co-authored-by: Benjamin Peterson <benjamin@python.org>
 2018-09-14 10:48:50 -07:00
Andrés Delfino caccca78e4 bpo-33702: Add some missing links in production lists and do a little polish (GH-7259) 2018-07-07 23:24:46 +03:00
Andrés Delfino 695118600f bpo-33847: Add '@' operator entry to index (GH-7669) 2018-06-15 15:23:00 -04:00
Andrés Delfino 4fddd4e406 bpo-33852: Remove misplaced parentheses around 'list'. (GH-7672) 
'expresson list' refers to the grammar term 'expression_list' in the subscription production.
 2018-06-15 14:24:25 -04:00
Andrés Delfino 268cc7c3f8 Fix lambda parameters being refered as arguments (GH-7037) 2018-05-22 07:57:45 +02:00
Serhiy Storchaka d08972fdb9
bpo-33260: Regenerate token.py after removing ASYNC and AWAIT. (GH-6447) 2018-04-11 19:15:51 +03:00
Serhiy Storchaka 07ca9afaa8
bpo-10544: Disallow "yield" in comprehensions and generator expressions. (GH-4564) 2018-02-04 10:53:48 +02:00
Serhiy Storchaka 73a7e9b10b bpo-10544: Deprecate "yield" in comprehensions and generator expressions. (GH-4579) 
The current behaviour of yield expressions inside comprehensions  and
generator expressions is essentially an accident of implementation - it
arises implicitly from the way the compiler handles yield expressions inside
nested functions and generators.

Since the current behaviour wasn't deliberately designed, and is inherently
confusing, we're deprecating it, with no current plans to reintroduce it.
Instead, our advice will be to use a named nested generator definition
for cases where this behaviour is desired.
 2017-12-01 14:54:17 +10:00
Yury Selivanov b8ab9d3fc8 bpo-31708: Allow async generator expressions in synchronous functions (#3905) 2017-10-06 02:58:28 -04:00
svelankar 9b47af6537 bpo-31501: Operator precedence description for arithmetic operators (#3633) 2017-09-17 17:56:16 -07:00
delirious-lettuce 3378b2062c Fix typos in multiple `.rst` files (#1668) 2017-05-19 23:37:57 +03:00
UltimateCoder 8856940cf2 bpo-28315: Improve code examples in docs (GH-1372) 
Replace
   File "<stdin>", line 1, in ? 
with 
   File "<stdin>", line 1, in <module>
 2017-05-03 09:46:45 -07:00
Serhiy Storchaka 997a4adea6 Remove outdated note about constraining of the bit shift right operand. (#1258) 
The constrain was removed in bpo-29816.
 2017-04-22 21:50:09 +03:00
cocoatomo cdcac039fb bpo-29952: Use usual terminology of dict (GH-917) 
s/keys and elements/keys and values/
 2017-03-31 14:48:49 +09:00
Amit Kumar 0ae7c8bd61 bpo-16011 clarify that 'in' always returns a boolean value 2017-03-28 10:13:01 -04:00
Jim Fasarakis-Hilliard 132ac381fe Fix small typos in expressions.rst (GH-276) 2017-02-24 12:32:54 -08:00
Martin Panter 2be9889405 Issues #12067: Merge hash recommendation from 3.5 2017-01-29 10:07:26 +00:00
Martin Panter 8dbb0ca573 Issue #12067: Recommend that hash and equality be consistent 2017-01-29 10:00:23 +00:00
Martin Panter 7e930d7677 Issue #28954: Merge keyword argument syntax from 3.5 2016-12-24 10:21:30 +00:00
Martin Panter 7106a51c71 Issue #28954: Add missing comma to keyword argument syntax 2016-12-24 10:20:38 +00:00
Yury Selivanov 03660041d2 Issue #28091: Document PEP 525 & PEP 530. 
Patch by Eric Appelt.
 2016-12-15 17:36:05 -05:00
Raymond Hettinger 06e18a7c24 Issue #26511: Reference the id() function in the 'is' and 'is not' docs 2016-09-11 17:23:49 -07:00
Martin Panter 1050d2d0c7 Issue #26462: Doc: reduce literal_block warnings, fix syntax highlighting. 
Patch by Julien Palard.
 2016-07-26 11:18:21 +02:00
Martin Panter 0c0da48aed Issue #24136: Document generalized unpacking, PEP 448 
Based on patches by Konstantin Molchanov and Neil Girdhar.
 2016-06-12 01:46:50 +00:00
Serhiy Storchaka dba903993a Issue #23921: Standardized documentation whitespace formatting. 
Original patch by James Edwards.
 2016-05-10 12:01:23 +03:00
Serhiy Storchaka c7cc9850d4 Issue #26156: Make expressions grammar description more semantically correct. 2016-05-08 21:59:46 +03:00
Serhiy Storchaka e4ba872543 Remove redundant leading zeroes in PEP references. 2016-03-31 15:30:54 +03:00
Martin Panter 84835ab1cb Issue #25161: Merge full stops from 3.4 into 3.5 2015-10-10 10:44:25 +00:00
Martin Panter d21e0b52f1 Issue #25161: Add full stops in documentation; patch by Takase Arihiro 2015-10-10 10:36:22 +00:00