Robert Kern wrote: > Neal Becker wrote: >> This example is right out of python library reference. What's wrong >> here? >> >> import optparse >> >> def store_value(option, opt_str, value, parser): >> setattr(parser.values, option.dest, value) >> >> parser = optparse.OptionParser() >> parser.add_option("--foo", >> action="callback", callback=store_value, >> type="int", nargs=3, dest="foo") >> >> (opt,args) = parser.parse_args ('--foo a b c'.split()) >> >> [...] >> /usr/lib64/python2.5/optparse.pyc in _process_args(self, largs, rargs, >> values) >> 1423 elif self.allow_interspersed_args: >> 1424 largs.append(arg) >> -> 1425 del rargs[0] >> 1426 else: >> 1427 return # stop now, leave this >> arg in rargs >> >> TypeError: 'str' object doesn't support item deletion > > Dunno. It works for me (i.e. I get the expected "error: option --foo: > invalid integer value: 'a'"). Have you tried it outside of IPython? > yes: python test_opt.py Traceback (most recent call last): File "test_opt.py", line 12, in <module> (opt,args) = parser.parse_args ('--foo') File "/usr/lib64/python2.5/optparse.py", line 1378, in parse_args stop = self._process_args(largs, rargs, values) File "/usr/lib64/python2.5/optparse.py", line 1425, in _process_args del rargs[0] TypeError: 'str' object doesn't support item deletion
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