On Wed, Sep 27, 2017 at 7:43 AM, Cai Gengyang <gengyang...@gmail.com> wrote: > Help check if my logic is correct in all 5 expressions > > > A) Set bool_one equal to the result of > False and False > > Entire Expression : False and False gives True because both are False
This is not correct, and comes from a confusion in the English language. In boolean logic, "and" means "both". For instance: *IF* we have eggs, *AND* we have bacon, *THEN* bake a pie. Can you bake an egg-and-bacon pie? You need *both* ingredients. The assertion "we have eggs" is True if we do and False if we do not; and the overall condition cannot be True unless *both* assertions are True. In Python, the second half won't even be looked at if the first half is false. That is to say, Python looks beside the stove to see if there's a carton of eggs, and if it can't see one, it won't bother looking in the freezer for bacon - it already knows we can't bake that pie. Your other questions are derived from this one, so you should be fine once you grok this one concept. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
