PEP 285 - Adding a bool type

[gvanrossum]

BPO	528022
Nosy	@gvanrossum, @loewis
Files	booldiff.txt: Diffs for bool type (1st upload) booldiff2.txt: New version (March 31) booldiff3.txt: Corrected new version (April 2nd). Last one.

^{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/gvanrossum'
closed_at = <Date 2002-04-03.23:04:29.000>
created_at = <Date 2002-03-10.05:45:44.000>
labels = ['interpreter-core']
title = 'PEP 285 - Adding a bool type'
updated_at = <Date 2002-04-03.23:04:29.000>
user = 'https://github.com/gvanrossum'

bugs.python.org fields:

activity = <Date 2002-04-03.23:04:29.000>
actor = 'gvanrossum'
assignee = 'gvanrossum'
closed = True
closed_date = None
closer = None
components = ['Interpreter Core']
creation = <Date 2002-03-10.05:45:44.000>
creator = 'gvanrossum'
dependencies = []
files = ['4049', '4050', '4051']
hgrepos = []
issue_num = 528022
keywords = ['patch']
message_count = 5.0
messages = ['39212', '39213', '39214', '39215', '39216']
nosy_count = 2.0
nosy_names = ['gvanrossum', 'loewis']
pr_nums = []
priority = 'normal'
resolution = 'accepted'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue528022'
versions = ['Python 2.3']

[gvanrossum]

Here's a preliminary implementation of the PEP,
including unittests checking the promises made in the
PEP (test_bool.py) and (some) documentation.

With this 12 tests fail for me (on Linux); I'll look
into these later. They appear shallow (mostly doctests
dying on True or False where 1 or 0 was expected).

Note: the presence of this patch does not mean that the
PEP is accepted -- it just means that a sample
implementation exists in case someone wants to explore
the effects of the PEP on their code.

[gvanrossum]

Logged In: YES
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Here's an updated diff (booldiff2.txt). It fixes a refcount
bug in bool_repr(), and works with current CVS.

With this patch set, 10 standard tests fail for shallow
reasons having to do with str() or repr() returning False or
True instead of 0 or 1. Here are the failed tests:

test_descr test_descrtut test_difflib test_doctest

test_extcall
test_generators test_gettext test_richcmp
test_richcompare
test_unicode

[loewis]

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user_id=21627

This patch does not support pickling of bools (the PEP
should probably spell out how they are pickled). marshalling
of bools does not round-trip (you get back an int).

[gvanrossum]

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I've attached a new patch, booldiff3.txt, that solves the
two remaining problems:

• picke, cPickle and marshal roundtrip

• the test suite succeeds (a total of 12 tests had to be
  fixed, all because of True/False vs. 1/0 in printed output)

I'm ready to check this in, but I'll first update the PEP.

[gvanrossum]

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Here's a new version of booldiff.txt that includes the new
files boolobject.[ch] and test_bool.py. Sorry.