Eval of expr with 'or' and 'and' within

[Robert Kern]

On 2013-06-14 18:01, Nick the Gr33k wrote:
> On 14/6/2013 7:47 μμ, Benjamin Kaplan wrote:
>   In an "and" clause,
>> python returns the first false value or the last value, because that
>> will evaluate to the correct Boolean value. In an "or" clause, python
>> returns the first true value or the last value. When Python finally got
>> a Boolean type, no one wanted to break backwards compatibility for this.
>
>
> This is exactly what i dont understand and thats why i keep asking and people
> call me an idiot. I just dont understand why it behaves like that.
>
> Why return first or last value?
>
> because that will evaluate to the correct Boolean value ????
>
> How do you mean? Please elaborate.

Please read the link I gave. It explains why.

   http://docs.python.org/2/reference/expressions.html#boolean-operations

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco