boolian logic

[marc wyburn]

HI all, I'm a bit stuck with how to work out boolian logic.

I'd like to say if A is not equal to B, C or D:
do something.

I've tried

if not var == A or B or C:
and various permutations but can't seem to get my head around it. I'm
pretty sure I need to know what is calulated first i.e the not or the
'OR/AND's

thanks, Marc.

[Andreas Tawn]

RE: boolian logic

if a != b and a != c and a != d:
doStuff()
else:
doOtherStuff()

Cheers,

Drea

>HI all, I'm a bit stuck with how to work out boolian logic.
>
>I'd like to say if A is not equal to B, C or D:
do something.
>
>I've tried
>
>if not var == A or B or C:
>and various permutations but can't seem to get my head around it. I'm
>pretty sure I need to know what is calulated first i.e the not or the
>'OR/AND's
>
>thanks, Marc.

[Aidan]

Re: boolian logic

marc wyburn wrote:

HI all, I'm a bit stuck with how to work out boolian logic.
>
I'd like to say if A is not equal to B, C or D:
do something.
>
I've tried
>
if not var == A or B or C:
and various permutations but can't seem to get my head around it. I'm
pretty sure I need to know what is calulated first i.e the not or the
'OR/AND's
>
thanks, Marc.

You mean like a ternary operation?

>>True and 1 or 0

1

>>False and 1 or 0

0

This of course depends on the 'true' result also being true.. it fails
if it is false...

if that's not what you mean, then maybe this is what you want

if not var==A or not var==B or not var==C:
# do something

[marc wyburn]

Re: boolian logic

On 13 Jun, 10:34, Aidan <awe...@gmail.c omwrote:

marc wyburn wrote:

HI all, I'm a bit stuck with how to work outboolianlogic .

>

I'd like to say if A is not equal to B, C or D:
   do something.

>

I've tried

>

if not var == A or B or C:
and various permutations but can't seem to get my head around it.  I'm
pretty sure I need to know what is calulated first i.e the not or the
'OR/AND's

>

thanks, Marc.

>
You mean like a ternary operation?
>
 >>True and 1 or 0
1
 >>False and 1 or 0
0
>
This of course depends on the 'true' result also being true.. it fails
if it is false...
>
if that's not what you mean, then maybe this is what you want
>
if not var==A or not var==B or not var==C:
     # do something

the not var==A or not var==B or not var==C was what I was after.I
was being too literal with my script and trying not (A or B or C)
which doesn't work.

Thanks for the help.

[duncan smith]

Re: boolian logic

marc wyburn wrote:

HI all, I'm a bit stuck with how to work out boolian logic.
>
I'd like to say if A is not equal to B, C or D:
do something.
>
I've tried
>
if not var == A or B or C:
and various permutations but can't seem to get my head around it. I'm
pretty sure I need to know what is calulated first i.e the not or the
'OR/AND's
>
thanks, Marc.

There's a number of ways of coding it. How about,

if not var in [A, B, C]:
#do stuff


Duncan

[Roel Schroeven]

Re: boolian logic

marc wyburn schreef:

HI all, I'm a bit stuck with how to work out boolian logic.
>
I'd like to say if A is not equal to B, C or D:
do something.
>
I've tried
>
if not var == A or B or C:
and various permutations but can't seem to get my head around it. I'm
pretty sure I need to know what is calulated first i.e the not or the
'OR/AND's

if var not in (A, B, C):
do_something()

--
The saddest aspect of life right now is that science gathers knowledge
faster than society gathers wisdom.
-- Isaac Asimov

Roel Schroeven

[cokofreedom@gmail.com]

Re: boolian logic

>

if var not in (A, B, C):
do_something()
>

And this is why I love python.