New submission from Leonardo Galani <l...@leonardobg.com.br>:
using Python 3.7.6 (default, Dec 27 2019, 09:51:07) @ macOs
dict = { 'a': 1, 'b': 2, 'c': 3 }
if you `if 'a' and 'b' and 'c' in dict: print('ok')` you will get a True, since
everything is true.
if you `if 'a' and 'g' and 'c' in dict: print('ok')` you also get a True
because the last statement is True but the mid statement is false.
To avoid this false positive, you need to be explicit:
`if 'a' in dict and 'g' in dict and 'c' in dict: print('ok')` you will get a
false.
----------
components: macOS
messages: 358954
nosy: leonardogalani, ned.deily, ronaldoussoren
priority: normal
severity: normal
status: open
title: False positive using operator 'AND' while checking keys on dict()
versions: Python 3.7
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue39149>
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