How to code a series of alternatives

[Scott F]

testvar = bob

# Trial A: This does not work
if testvar == ("fred" or "bob):
statements

# Trial B: This does work
if textvar == "fred" or textvar == "bob":
statements


Trial B is OK for 1 or 2 tests, but gets messy for 5 or 6. What is the
variation of Trial A that will work?


Scott

[Aahz]

Re: How to code a series of alternatives

In article <Xns94987ED355A 3Asdfexpertunec om@216.168.3.44 >,
Scott F <sdfATexpertune DOTcom> wrote:[color=blue]
>testvar = bob
>
># Trial A: This does not work
>if testvar == ("fred" or "bob):
> statements
>
># Trial B: This does work
>if textvar == "fred" or textvar == "bob":
> statements
>
>Trial B is OK for 1 or 2 tests, but gets messy for 5 or 6. What is the
>variation of Trial A that will work?[/color]

Simplest:

if testvar in ('fred', 'bob'):

Fastest:

options = sets.Set('fred' , 'bob'):

...

if testvar in options:
--
Aahz (aahz@pythoncra ft.com) <*> http://www.pythoncraft.com/

"Do not taunt happy fun for loops. Do not change lists you are looping over."
--Remco Gerlich, comp.lang.pytho n

[John Burton]

Re: How to code a series of alternatives

Scott F wrote:[color=blue]
> testvar = bob
>
> # Trial A: This does not work
> if testvar == ("fred" or "bob):
> statements
>
> # Trial B: This does work
> if textvar == "fred" or textvar == "bob":
> statements
>
>
> Trial B is OK for 1 or 2 tests, but gets messy for 5 or 6. What is the
> variation of Trial A that will work?[/color]

if testvar in ["fred", "bob"]:
statements

[Scott F]

Re: How to code a series of alternatives

aahz@pythoncraf t.com (Aahz) wrote in
news:c1dhgu$orm $1@panix3.panix .com:
[color=blue]
>
> Simplest:
>
> if testvar in ('fred', 'bob'):
>
> Fastest:
>
> options = sets.Set('fred' , 'bob'):
>
> ...
>
> if testvar in options:[/color]


Thank you. I'd be embarassed, but I'm only grateful.

Scott

[F. Petitjean]

Re: How to code a series of alternatives

On Mon, 23 Feb 2004 18:28:03 -0000, Scott F <> wrote:[color=blue]
> testvar = bob[/color]
I suppose you mean : testvar = "bob"
[color=blue]
> # Trial A: This does not work
> if testvar == ("fred" or "bob):
> statements[/color]
How about this ?
if testvar in ("fred", bob"):
statements[color=blue]
>
> # Trial B: This does work
> if textvar == "fred" or textvar == "bob":
> statements
>
>
> Trial B is OK for 1 or 2 tests, but gets messy for 5 or 6. What is the
> variation of Trial A that will work?[/color]

alternatives = ("one", "two", "three")
if alternative in alternatives:
# statements


Regards

[Paul Rubin]

Re: How to code a series of alternatives

Scott F <sdfATexpertune DOTcom> writes:
[color=blue]
> testvar = bob
>
> # Trial A: This does not work
> if testvar == ("fred" or "bob):
> statements
>
> # Trial B: This does work
> if textvar == "fred" or textvar == "bob":
> statements
>
> Trial B is OK for 1 or 2 tests, but gets messy for 5 or 6. What is the
> variation of Trial A that will work?[/color]

if testvar in ("fred","bob "):
statements