Revision 23ea9475

b/kamaki/cli/commands/__init__.py
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            _in=None, _out=None, _err=None):
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        self._in, self._out, self._err = (
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            _in or stdin, _out or stdout, _err or stderr)
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        self._in = codecs.getreader(pref_enc)(_in or stdin)
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        self._out = codecs.getwriter(pref_enc)(_out or stdout)
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        self._err = codecs.getwriter(pref_enc)(_err or stderr)
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        self.required = getattr(self, 'required', None)
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        if hasattr(self, 'arguments'):
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            arguments.update(self.arguments)

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