def __init__(self, pretty=True, limit_keys_to=None, force_keys=None, **kwargs):
		super(JSONFormatter, self).__init__(**kwargs)
		self.limit_keys_to = limit_keys_to
		if force_keys:
			self.exclude_attrs = set(force_keys) - self.default_exclude_attrs
		else:
			self.exclude_attrs = self.default_exclude_attrs
		self.pretty = pretty
dataset/ETHPy150Open marrow/contentment/web/contentment/util/__init__.py/JSONFormatter.__init__/swapped operands of `-`