On 12/6/2013 8:53 μμ, MRAB wrote:
and then what this is doing?
if '=' not in ( name or month or year ):
In English, the result of:
x or y
is basically:
if bool(x) is true then the result is x, otherwise the result is y
For example:
>>> bool("")
False
>>> "" or "world"
'world'
>>> bool("Hello")
True
>>> "Hello" or "world"
'Hello'
These can be strung together, so that:
x and y and z
is equivalent to:
(x and y) and z
and:
x or y or z
is equivalent to:
(x or y) or z
and so on, however many times you wish to do it.
Never before i used not in with soe many variables in parenthesi, up
until now i was specified it as not in var 1 and not in var 2 and not in
var 2 and so on....
Keep it simple:
if '=' not in name and '=' not in month and '=' not in year:
There may be a shorter way, but you seem confused enough as it is.
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
if '=' not in ( name and month and year ):
i understand: if '=' not in name AND '=' not in month AND '=' not in year
if '=' not in ( name or month or year ):
i understand: if '=' not in name OR '=' not in month OR '=' not in year
but i know it does not work like this, but tis is how i understand it.
its like reading an English sentence
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