Changing the signature for Parameter's constructor

[anntzer]

BPO	20011
Nosy	@bitdancer, @1st1, @anntzer
Files	parameter-constructor.patch

^{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 = None
closed_at = <Date 2014-01-29.21:01:44.005>
created_at = <Date 2013-12-18.00:04:43.113>
labels = ['library']
title = "Changing the signature for Parameter's constructor"
updated_at = <Date 2014-01-29.21:01:44.004>
user = 'https://github.com/anntzer'

bugs.python.org fields:

activity = <Date 2014-01-29.21:01:44.004>
actor = 'yselivanov'
assignee = 'none'
closed = True
closed_date = <Date 2014-01-29.21:01:44.005>
closer = 'yselivanov'
components = ['Library (Lib)']
creation = <Date 2013-12-18.00:04:43.113>
creator = 'Antony.Lee'
dependencies = []
files = ['33183']
hgrepos = []
issue_num = 20011
keywords = ['patch']
message_count = 4.0
messages = ['206490', '206512', '206543', '209682']
nosy_count = 3.0
nosy_names = ['r.david.murray', 'yselivanov', 'Antony.Lee']
pr_nums = []
priority = 'normal'
resolution = 'rejected'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue20011'
versions = ['Python 3.5']

[anntzer]

As suggested on python-ideas, this small patch changes the constructor of inspect.Parameter so that "kind" defaults to "POSITIONAL_OR_KEYWORD", which should make code that needs to construct Parameter objects slightly less verbose (as I believe POSITIONAL_OR_KEYWORD is likely the most common kind).

[bitdancer]

Can you provide a link to the python-ideas discussion, please?

[anntzer]

Nobody replied so far...
https://mail.python.org/pipermail/python-ideas/2013-December/024538.html

[1st1]

I don't think this is a good idea, as it would require those who read with the code to know about this default. Explicit is definitely better than implicit in this case.