I decided I could be more articulate. I hope this helps.
I'm writing a program that needs to process options. Due to the nature of
the program with its large number of commandline options, I would like to
write a callback to be set inside add_option.
Something like this:
parser.add_option("-b", action="callback", callback=optionhandlr, dest='b')
The Cookbook almost takes me there with a callback function that only
works for an option called b that takes no argument:
def optionhndlr(option, opt_str, value, parser):
if parser.values.b:
raise OptionValueError("can't use %s after -b" % opt_str)
setattr(parser.values, option.dest, 1)
but warns that "it needs a bit of work: the error message and the flag
that it sets must be generalized". I do need to do my option processing in
an option processor with many options and I'd both like to do it in one
method (if possible) and learn a trick or two while I'm at it. Is it
possible to have a single callback that could be used in the general case?
All I need is to be taught how to fish...
TIA
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happened but none stranger than this. Does your driver's license say Organ ..0
Donor?Black holes are where God divided by zero. Listen to me! We are all- 000
individuals! What if this weren't a hypothetical question?
steveo at syslang.net
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