~(True) and ~(False) gives incorrect result

[nmadurkar]

BPO	45368
Nosy	@ericvsmith, @masklinn

^{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 2021-10-05.08:43:40.795>
created_at = <Date 2021-10-05.04:26:55.477>
labels = ['invalid']
title = '~(True) and ~(False) gives incorrect result'
updated_at = <Date 2021-10-05.08:43:40.795>
user = 'https://bugs.python.org/nmadurkar'

bugs.python.org fields:

activity = <Date 2021-10-05.08:43:40.795>
actor = 'serhiy.storchaka'
assignee = 'none'
closed = True
closed_date = <Date 2021-10-05.08:43:40.795>
closer = 'serhiy.storchaka'
components = []
creation = <Date 2021-10-05.04:26:55.477>
creator = 'nmadurkar'
dependencies = []
files = []
hgrepos = []
issue_num = 45368
keywords = []
message_count = 4.0
messages = ['403190', '403191', '403192', '403196']
nosy_count = 3.0
nosy_names = ['eric.smith', 'xmorel', 'nmadurkar']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue45368'
versions = []

[nmadurkar]

~(True) returns -2
~(False) returns -1

[ericvsmith]

What were you expecting?

I think those are correct. See:
>>> ~1
-2
>>> ~0
-1

[nmadurkar]

True is a boolean so ~True should return False according to me.
True is not the same as 1

[masklinn]

True is a boolean so ~True should return False according to me.

That's be a BC break for no reason: if you want to invert a boolean you can just not it.

True is not the same as 1

For historical reasons, in Python it is:

>>> bool.mro()
[<class 'bool'>, <class 'int'>, <class 'object'>]
>>> True == 1
True
>>> False == 0
True

So when you call ~True, you're calling int.__invert__(True), which behaves as what it is: the bitwise inverse of a two's-complement signed integer.