problem with optparse
Neal Becker
ndbecker2 at gmail.com
Tue Dec 2 19:47:52 EST 2008
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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