[issue42456] Logical Error

[Tim Peters]

Tim Peters <tim at python.org> added the comment:

Please ask for help on StackOverflow or the general Python mailing list. Your understanding of the operations is incorrect.

"&" is NOT a logical operator ("and" is). It's a bitwise operator on integers.

>>> 10 & 10
10
>>> bin(10)
'0b1010'

The last bit is 0, so when you "&" the result with True (which is equivalent to integer 1) the result is 0:

>>> (10 & 10) & True
0

and the integer 0 is treated as False in a Boolean context.

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resolution:  -> not a bug
status: open -> closed

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42456>
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