How to use 'python argparse default value' in Python

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30def default(self, value):
31 self.__dict__['default'] = value
32 self.has_default = True

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1246def get_default(self, dest):
1247 for action in self._actions:
1248 if action.dest == dest and action.default is not None:
1249 return action.default
1250 return self._defaults.get(dest, None)

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