def __init__(self, qpart):
        self._qpart = qpart

        self.width = self._DEFAULT_INDENT_WIDTH
        self.useTabs = self._DEFAULT_INDENT_USE_TABS

        self._smartIndenter = _getSmartIndenter('normal', self._qpart, self)
def combinationSum(self, candidates, target):
        self.result = []
        self.dfs(candidates,0,target,[])
        return self.result