problem with user confirmation

[Matthew]

I am have written a medium sized program and everything works fine
except for one piece. At a certain point in the program I want to do a
simple user confirmation, eg Are you sure ? y/n. The problem that I am
having is that after the user enters an answer and presses enter, the
program executes the rest of the code regardless of what the user
response was.

Heres my code:

def confirmAction(s elf, msg):
if not msg:
msg = 'Are you sure y/[n]> '
print msg
confirm = sys.stdin.readl ine()[:-1]
print 'confirm = \'%s\'' %(confirm)
if confirm == 'y' or 'Y' or 'Yes' or 'YES' or 'yes':
return 1
return 0

if confirmAction(' Are you sure you want to DEACTIVATE this port?
y/[n]'):
print 'Deactivating
#Do some other stuff
else:
sys.exit(-1)

At this point in the program I can enter nothing, or y, or sdfasd, and
no matter what I do it prints 'Deactivating and executes the rest of
my code. I can't figure it out to save my life. I am sure that the
answer is very simple and that I have just been thinking to hard and
have over looked it.

Thanks for any help
-matthew

[Duncan Smith]

Re: problem with user confirmation


"Matthew" <ruach@chpc.uta h.edu> wrote in message
news:ec1162c7.0 309181523.2077b 7e5@posting.goo gle.com...[color=blue]
> I am have written a medium sized program and everything works fine
> except for one piece. At a certain point in the program I want to do a
> simple user confirmation, eg Are you sure ? y/n. The problem that I am
> having is that after the user enters an answer and presses enter, the
> program executes the rest of the code regardless of what the user
> response was.
>
> Heres my code:
>
> def confirmAction(s elf, msg):
> if not msg:
> msg = 'Are you sure y/[n]> '
> print msg
> confirm = sys.stdin.readl ine()[:-1]
> print 'confirm = \'%s\'' %(confirm)
> if confirm == 'y' or 'Y' or 'Yes' or 'YES' or 'yes':
> return 1
> return 0[/color]

[snip]

'Y' evaluates to true.

Maybe try something like:

if confirm in ['y', 'Y', 'Yes', 'YES', 'yes']:
etc.

Duncan

[Bob Gailer]

Re: problem with user confirmation

At 05:39 PM 9/18/2003, Duncan Smith wrote:

[color=blue]
>"Matthew" <ruach@chpc.uta h.edu> wrote in message
>news:ec1162c7. 0309181523.2077 b7e5@posting.go ogle.com...[color=green]
> > I am have written a medium sized program and everything works fine
> > except for one piece. At a certain point in the program I want to do a
> > simple user confirmation, eg Are you sure ? y/n. The problem that I am
> > having is that after the user enters an answer and presses enter, the
> > program executes the rest of the code regardless of what the user
> > response was.
> >
> > Heres my code:
> >
> > def confirmAction(s elf, msg):
> > if not msg:
> > msg = 'Are you sure y/[n]> '
> > print msg
> > confirm = sys.stdin.readl ine()[:-1]
> > print 'confirm = \'%s\'' %(confirm)
> > if confirm == 'y' or 'Y' or 'Yes' or 'YES' or 'yes':
> > return 1
> > return 0[/color]
>
>[snip]
>
>'Y' evaluates to true.[/color]

To be more explicit:

given: confirm = 'y'
confirm == 'y' or 'Y' or 'Yes' or 'YES' or 'yes' evaluates to 1 (confirm ==
'y' returns 1)

but given: confirm = 'Y'
confirm == 'y' or 'Y' or 'Yes' or 'YES' or 'yes' evaluates to 'Y' (confirm
== 'y' returns 0 which is ored with 'Y" which is true, hence the result is 'Y')
[color=blue]
>Maybe try something like:
>
>if confirm in ['y', 'Y', 'Yes', 'YES', 'yes']:[/color]

Even better

if 'yes'.startswit h(confirm.lower ()): # covers y ye yes Y YE YES yES Yes etc.

Bob Gailer
bgailer@alum.rp i.edu
303 442 2625


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[Matthew]

Re: problem with user confirmation

That worked, thanks very much.

-matthew


"Duncan Smith" <buzzard@urubu. freeserve.co.uk > wrote in message news:<bkdfg7$lg a$1@news6.svr.p ol.co.uk>...[color=blue]
> "Matthew" <ruach@chpc.uta h.edu> wrote in message
> news:ec1162c7.0 309181523.2077b 7e5@posting.goo gle.com...[color=green]
> > I am have written a medium sized program and everything works fine
> > except for one piece. At a certain point in the program I want to do a
> > simple user confirmation, eg Are you sure ? y/n. The problem that I am
> > having is that after the user enters an answer and presses enter, the
> > program executes the rest of the code regardless of what the user
> > response was.
> >
> > Heres my code:
> >
> > def confirmAction(s elf, msg):
> > if not msg:
> > msg = 'Are you sure y/[n]> '
> > print msg
> > confirm = sys.stdin.readl ine()[:-1]
> > print 'confirm = \'%s\'' %(confirm)
> > if confirm == 'y' or 'Y' or 'Yes' or 'YES' or 'yes':
> > return 1
> > return 0[/color]
>
> [snip]
>
> 'Y' evaluates to true.
>
> Maybe try something like:
>
> if confirm in ['y', 'Y', 'Yes', 'YES', 'yes']:
> etc.
>
> Duncan[/color]