byron a écrit :
I am reading o'reilly's learning python (great book), but i came across an example (pg 291, pdf) that I am not quite understanding the reasoning for the author's explanation:if f1() or f2(): The author states that do to the nature of that expression, if f1() returns True, f2() will not be evaluated.. which makes sense. His quote: "Here, if f1 returns a true (or nonempty) value, Python will never run f2." He then states: "To guarantee that both functions will be run, call them before the 'or':" tmp1, tmp2 = f1(), f2() if tmp1 or tmp2: Being that each function is an object, a name assignment to (tmp1,tmp2) doesn't actually evaluate or run the function itself until the name is called..
It (well... they) is (are) actually called. The parens are the call operator.
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