I'm new to python and I have a need to do this. The Cookbook almost takes me there with:
def check_order(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 the "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. Is it possible to have a callback that knows how to access all of the options? Many thanks. All I need is to be taught how to fish... -- Time flies like the wind. Fruit flies like a banana. Stranger things have .0. 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 -- http://mail.python.org/mailman/listinfo/python-list