[Zope] how to use sequence-end from python script?

[Peter Bengtsson]

for item in sequence:
    if item == sequence[0]:
        print "sequence-start"
    if item == sequence[-1]:
        print "sequence-end"

That's the way to do it in Python.
Alternativly:

for c in range(len(sequence)):
    item = sequence[c]
    if item == sequence[0]:
        print "sequence-start"

    print "sequence-index:", c
    print "sequence-number", c+1
    if c%2:
        print "sequence-odd"
    else:
        print "sequence-even"

    if item == sequence[-1]:
        print "sequence-end"

Bare in mind that there are still no variables here. Just print statements.

----- Original Message -----
From: "ender" <kthangavelu@earthlink.net>
To: "Kevin L" <kevinsl@yahoo.com>; <zope@zope.org>
Sent: Sunday, July 08, 2001 7:04 PM
Subject: Re: [Zope] how to use sequence-end from python script?


> On Sunday 08 July 2001 14:58, Kevin L wrote:
> >>Hello,
> >>
> >>I know this is a syntax problem. I just can't find it anywhere
> >>in the docs.
> >>
> >>I'm executing a Z SQL Method from a python script need to test
> >>sequence-end. For example
> >>
> >>for result in context.sqlmethod(params):
> >>    # do something
> >>    if not 'sequence-end':
> >>        # do something here
> >>
> >>Can anyone tell me how to test for "not sequence-end"? Do I have
> >>to use context['sequence-end'] or result['sequence-end']?
>
>
> the problem is your trying to use batching semantics which are only
> associated with the dtml-in tag. in a python script you have access to the
> entire set of results. if you want to batch in a python script you need to
> devise your own batching scheme.
>
> for example define a request variable query_start and batch_length
>
> and in your script do (untested)
>
> return context.sqlmethod(params)[query_start:query_start+batch_length]
>
> you'll get back a list of sql brains which you can iterate over like
>
> <dtml-in "mypythonscript(params)">
> <dtml-var yoursqlvar1> <dtml-var yoursqlvar2>
> </dtml-in>
>
> hth
> kapil
>
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