(self)
return 0
Returns the depth of the tree under this matcher, or 0 if this
        matcher does not have any children.
Returns the depth of the tree under this matcher, or 0 if this
        matcher does not have any children.
Returns the depth of the tree under this matcher or 0 if this matcher does not have any children .
def depth(self):
        """Returns the depth of the tree under this matcher, or 0 if this
        matcher does not have any children.
        """

        return 0
def depth ( self ) : return 0