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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def treeWalk(self, **kwargs):
 """ Recursively walk through a C_stree, applying a passed function at each node. The actual "walk" depends on using the 'cd' function which will only descend into paths that already exist in the internal path database. To flush this and explore the pathspace de novo, use treeExplore() instead. kwargs: --startPath=<startPath> : The starting point in the tree --func=<f> : The function to apply at each node Additional kwargs are passed to <f> <f> is a function that is called on a node path. It is of form: f(path, **kwargs) where path is a node in the tree space. <f> must return a dictionary containing at least one field: { "status": True | False } This same dictionary is also returned out to the caller of this function. """


            str_recursePath = ''
            str_startPath   = '/'
            f               = None
            ret             = {}

            for key,val in kwargs.items():
                if key == 'startPath':  str_startPath   = val
                if key == 'f':          f               = val

            # print 'processing node: %s' % str_startPath
            if self.cd(str_startPath)['status']:
                ret = f(str_startPath, **kwargs)
                if ret['status']:
                    for node in self.lstr_lsnode(str_startPath):
                        if str_startPath == '/': str_recursePath = "/%s" % node
                        else: str_recursePath = '%s/%s' % (str_startPath, node)
                        self.treeWalk(f = f, startPath = str_recursePath)
            return ret