A certainl part of an if() structure never gets executed.
Νικόλαος Κούρας
support at superhost.gr
Wed Jun 12 14:06:09 EDT 2013
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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