Am 12.06.2013 20:06, schrieb Νικόλαος Κούρας:
Whn i see:
if( x and y ):
i understand: if x expression = True AND ALSO y expression = True then
execute
if( x or y ):
i understand: if x expression = True OR y expression = True then execute
You didn't read MRABs explanation, did you?
if '=' not in ( name and month and year ):
i understand: if '=' not in name AND '=' not in month AND '=' not in year
Wrong. The "'=' not in (...)" first evaluates the expression in
parentheses, that's what parentheses are for. And then it looks for '='
in the result. And that result is just one of the three values, MRAB
told you which one.
if '=' not in ( name or month or year ):
i understand: if '=' not in name OR '=' not in month OR '=' not in year
Same here. You can't take the "'=' in" out of the parentheses, that
leads to a wrong result.
but i know it does not work like this, but tis is how i understand it.
??? If you know it doesn't work like this, then it won't help you to
wilfully understand something you'd like to be true.
its like reading an English sentence
No, this time it isn't.
HTH
Sibylle
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