[issue32117] Tuple unpacking in return and yield statements

2020-05-05 Thread miss-islington 


miss-islington  added the comment:


New changeset 627f7012353411590434a7d5777ddcbcc8d97fcd by Javier Buzzi in 
branch 'master':
bpo-32117: Updated Simpsons names in docs (GH-19737)
https://github.com/python/cpython/commit/627f7012353411590434a7d5777ddcbcc8d97fcd


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[issue32117] Tuple unpacking in return and yield statements

2020-04-27 Thread Roundup Robot 


Change by Roundup Robot :


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nosy_count: 6.0 -> 7.0
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pull_request: https://github.com/python/cpython/pull/19737

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[issue32117] Tuple unpacking in return and yield statements

2019-10-30 Thread Roundup Robot 


Change by Roundup Robot :


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pull_request: https://github.com/python/cpython/pull/16994

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[issue32117] Tuple unpacking in return and yield statements

2018-10-05 Thread Serhiy Storchaka 


Change by Serhiy Storchaka :


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[issue32117] Tuple unpacking in return and yield statements

2018-10-05 Thread Serhiy Storchaka 


Serhiy Storchaka  added the comment:


New changeset 4642d5f59828e774585e9895b538b24d71b9df8e by Serhiy Storchaka in 
branch 'master':
Use assertEqual() instead of assertEquals(). (GH-9721)
https://github.com/python/cpython/commit/4642d5f59828e774585e9895b538b24d71b9df8e


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[issue32117] Tuple unpacking in return and yield statements

2018-10-05 Thread Serhiy Storchaka 


Change by Serhiy Storchaka :


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[issue32117] Tuple unpacking in return and yield statements

2018-10-01 Thread Serhiy Storchaka 


Serhiy Storchaka  added the comment:

assertEquals() is deprecated, use assertEqual() instead. This causes tests 
failure when run with -Werror.

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[issue32117] Tuple unpacking in return and yield statements

2018-09-22 Thread miss-islington 


miss-islington  added the comment:


New changeset 8fabae3b00b2ccffd9f7bf4736734ae584ac5829 by Miss Islington (bot) 
(jChapman) in branch 'master':
bpo-32117: Iterable unpacking in return and yield documentation (GH-9487)
https://github.com/python/cpython/commit/8fabae3b00b2ccffd9f7bf4736734ae584ac5829


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[issue32117] Tuple unpacking in return and yield statements

2018-09-21 Thread Jordan Chapman 


Change by Jordan Chapman :


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[issue32117] Tuple unpacking in return and yield statements

2018-09-21 Thread Guido van Rossum 


Guido van Rossum  added the comment:

Fixed by https://github.com/python/cpython/pull/4509.

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[issue32117] Tuple unpacking in return and yield statements

2018-09-21 Thread Guido van Rossum 


Guido van Rossum  added the comment:


New changeset fd97d1f1af910a6222ea12aec42c456b64f9aee4 by Guido van Rossum 
(David Cuthbert) in branch 'master':
bpo-32117: Allow tuple unpacking in return and yield statements (gh-4509)
https://github.com/python/cpython/commit/fd97d1f1af910a6222ea12aec42c456b64f9aee4


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[issue32117] Tuple unpacking in return and yield statements

2018-09-15 Thread Jordan Chapman 


Jordan Chapman  added the comment:

Sorry, I could have sworn that I pasted my link... https://github.com/jChapman

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[issue32117] Tuple unpacking in return and yield statements

2018-09-15 Thread Jordan Chapman 


Jordan Chapman  added the comment:

Here's my GitHub account: I'll make the changes and rebase as soon as I get 
home.

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[issue32117] Tuple unpacking in return and yield statements

2018-09-15 Thread Guido van Rossum 


Guido van Rossum  added the comment:

Jordan, what's your GitHub account name? I hope you can check this out and make 
the changes I'm requesting on GitHub.

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[issue32117] Tuple unpacking in return and yield statements

2018-09-14 Thread Jordan Chapman 


Jordan Chapman  added the comment:

BFDL approval: 
https://mail.python.org/pipermail/python-dev/2017-November/150842.html

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[issue32117] Tuple unpacking in return and yield statements

2018-09-14 Thread Guido van Rossum 


Guido van Rossum  added the comment:

Move to 3.8.

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[issue32117] Tuple unpacking in return and yield statements

2017-11-29 Thread David Cuthbert 

David Cuthbert  added the comment:

Oops, I wasn't looking broadly enough. This is also used in the augmented 
assignment statements syntax, e.g. a += 1, 2, 3

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[issue32117] Tuple unpacking in return and yield statements

2017-11-29 Thread David Cuthbert 

David Cuthbert  added the comment:

Hm... that leaves the only production for expression_list as:
subscription ::= primary "[" expression_list "]"

And I'm not sure that this shouldn't also be replaced by starred_list. It's not 
accepted today, though:

In [6]: a[1,*(4, 5, 6)]
  File "", line 1
a[1,*(4, 5, 6)]
^
SyntaxError: invalid syntax

I will ask about this again on python-dev@

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[issue32117] Tuple unpacking in return and yield statements

2017-11-29 Thread Henk-Jaap Wagenaar 

Henk-Jaap Wagenaar  added the comment:

I think the language spec needs updating as well? In particular in

https://docs.python.org/3/reference/simple_stmts.html#the-return-statement

it seems expression_list should be replaced by starred_list.

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[issue32117] Tuple unpacking in return and yield statements

2017-11-29 Thread David Cuthbert 

David Cuthbert  added the comment:

CLA processed, and BDFL has assented on python-dev. Serhiy, thoughts on next 
steps?

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[issue32117] Tuple unpacking in return and yield statements

2017-11-22 Thread Serhiy Storchaka 

Serhiy Storchaka  added the comment:

Since this changes the grammar, it should be first discussed on Python-Dev and 
approved by BDFL.

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[issue32117] Tuple unpacking in return and yield statements

2017-11-22 Thread Serhiy Storchaka 

Change by Serhiy Storchaka :


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versions: +Python 3.7 -Python 3.4, Python 3.5, Python 3.6

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[issue32117] Tuple unpacking in return and yield statements

2017-11-22 Thread David Cuthbert 

Change by David Cuthbert :


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[issue32117] Tuple unpacking in return and yield statements

2017-11-22 Thread David Cuthbert 

New submission from David Cuthbert :

This stems from a query on StackOverflow: 
https://stackoverflow.com/questions/47272460/python-tuple-unpacking-in-return-statement/

Specifically, the following syntax is allowed:
def f():
rest = (4, 5, 6)
t = 1, 2, 3, *rest

While the following result in SyntaxError:
def g():
rest = (4, 5, 6)
return 1, 2, 3, *rest

def h():
rest = (4, 5, 6)
yield 1, 2, 3, *rest

Looking at the original commit that enabled tuple unpacking in assignment 
statements:
https://github.com/python/cpython/commit/4905e80c3d2f6abb613d212f0313d1dfe09475dc

I don't believe this difference is intentional.

My GitHub repo incorporates a fix for this; I'll file a pull request 
momentarily.

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components: Interpreter Core
messages: 306761
nosy: dacut
priority: normal
severity: normal
status: open
title: Tuple unpacking in return and yield statements
type: behavior
versions: Python 3.4, Python 3.5, Python 3.6

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