Tunple Bug?

[zhuojun]

BPO	15771
Nosy	@ezio-melotti

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/ezio-melotti'
closed_at = <Date 2012-08-23.08:30:37.502>
created_at = <Date 2012-08-23.08:27:22.430>
labels = ['type-bug', 'invalid']
title = 'Tunple Bug?'
updated_at = <Date 2012-08-23.08:33:11.879>
user = 'https://bugs.python.org/zhuojun'

bugs.python.org fields:

activity = <Date 2012-08-23.08:33:11.879>
actor = 'ezio.melotti'
assignee = 'ezio.melotti'
closed = True
closed_date = <Date 2012-08-23.08:30:37.502>
closer = 'ezio.melotti'
components = ['None']
creation = <Date 2012-08-23.08:27:22.430>
creator = 'zhuojun'
dependencies = []
files = []
hgrepos = []
issue_num = 15771
keywords = []
message_count = 3.0
messages = ['168929', '168930', '168931']
nosy_count = 2.0
nosy_names = ['ezio.melotti', 'zhuojun']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue15771'
versions = ['Python 3.2']

[zhuojun]

>>> def f(*agrs):
	print(agrs)

>>> f(1,2)
(1, 2)
>>> f(1) #Is the output wrong? It should be without ','.
(1,)

[ezio-melotti]

Tuples with one element are defined as (x,), since the comma is what really makes the tuple.

[ezio-melotti]

See the second code block here: http://docs.python.org/py3k/tutorial/datastructures.html#tuples-and-sequences