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Python challenge questions
I got a challenge question I dont understand 1.) What is the output? x= True y= False print(not x==x or y==y) Answer: True What I dont get is, if x is x and also y is y, that means that both are True. So if i do a print(not true or true), should i get a False as an output?
2 odpowiedzi
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print( not x == x or y == y
Is equivalent to:
print( ( (not x) == x) or (y == y) )
not and == have the same precedence and are evaluated from left to right; or have grater precedence than not / ==
1st: not x
2nd: not x == x
3rd: .... or ......
not x == x is False
y == y is True
So... False or True is True
+ 3
((not x==x) = (x != x)) =>
=> ((not True) = (False))
or
((y==y) = True)
(False or True) = True