On Thu, 07 Sep 2006 David H wrote :

Martijn Pieters wrote:

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cpdm cadlab wrote:

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thanks for the quick reply. I am glad to be here on active ZOPE mailing list.

Let's keep it on the list then; no personal email please.

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I had initially done the way you have suggested, but it doesn't work in the sense I get a empty list as output, which I know isn't empty.

Then something is wrong with the external method. Use a debugger (pdb, Wing, Komodo, etc.) or spurious logging (import logger; logger.getLogger('yourmodule').log) to trace your code.

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This made me think that I was making silly mistake. If I run external method in python shell it shows the mlist, which is non-empty, but if I ask the same to python script to do what it prints is this : [] What do you think is wrong. A further code goes like this: mlist = context.code(uparam) if len(mlist) == str(0): print "Sorry no suitable method found in database" return printed else: print mlist return printed

Use "if not len(mlist):"; comparing the length to str(0) is always false. "len" returns an integer, not a string, so 0 == '0' will never be True.

You can also call the external method directly if you encode the arguments passed to it in the query string. Just open up a python propmt, import urllib and call urllib.quote on your argument list to hand-construct a URL.

Moreover, get decent books on Python and on Web programming in general.

Martijn Pieters

Martijn,

I wonder which books would recommend? Best I can say is that books just about HTTP are probably the least appreciated and often the most useful.

David

Well sure it takes time to acquire etiquette for newcomer. I am stuck but hopefully will solve it out. thanks a lot to both of you. m.d.