%b does not work, as a binary output formatter

[BobStein]

BPO	24112
Nosy	@stevendaprano

^{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 2015-05-02.10:57:22.508>
created_at = <Date 2015-05-02.10:29:18.473>
labels = ['type-bug', 'invalid']
title = '%b does not work, as a binary output formatter'
updated_at = <Date 2015-05-02.11:04:13.284>
user = 'https://bugs.python.org/BobStein'

bugs.python.org fields:

activity = <Date 2015-05-02.11:04:13.284>
actor = 'BobStein'
assignee = 'none'
closed = True
closed_date = <Date 2015-05-02.10:57:22.508>
closer = 'steven.daprano'
components = []
creation = <Date 2015-05-02.10:29:18.473>
creator = 'BobStein'
dependencies = []
files = []
hgrepos = []
issue_num = 24112
keywords = []
message_count = 3.0
messages = ['242388', '242389', '242390']
nosy_count = 2.0
nosy_names = ['steven.daprano', 'BobStein']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue24112'
versions = ['Python 2.7']

[BobStein]

"%b"%42 produces a ValueError exception instead of outputting '101010'

Details here: http://stackoverflow.com/a/29997703/673991

[stevendaprano]

This is not a bug, since %b is not supported in Python 2, only in Python 3:

https://docs.python.org/2/library/stdtypes.html#string-formatting-operations

No new features will be added to 2.7, so if you need %b you can use Python 3, or in Python 2.7 you can use the newer string format method instead:

py> "{:b}".format(42)
'101010'

[BobStein]

Ah, you're right, my mistake.