CODEWITHSUNDEEP
pythoncomparison-operators
npnmodp
npnmodp

Reputation: 1232

Python comparison operator precedence

All comparison operations in Python have the same priority, which is lower than that of any arithmetic, shifting or bitwise operation. Thus "==" and "<" have the same priority, why would the first expression in the following evaluate to True, different from the 2nd expression?

>>> -1 < 0 == False
True

>>> (-1 < 0) == False
False

I would expect both be evaluated to False. Why is it not the case?

Upvotes: 5

Views: 1731

Answers (1)

Roman Susi
Roman Susi

Reputation: 4199

Python has a really nice feature - chained comparison, like in math expressions, so 

-1 < 0 == False

is actually a syntactic sugar for

-1 < 0 and 0 == False

under the hood.

Upvotes: 9

Related Questions