(self)
return ranges
Returns a list of tuples with lower and upper range of each index.

        If an index does not define the data members upper and lower, the
        corresponding slot in the list contains ``None`` instead of a tuple.

        Examples
        ========

        >>> from sympy import Indexed,Idx, symbols
        >>> Indexed('A', Idx('i', 2), Idx('j', 4), Idx('k', 8)).ranges
        [(0, 1), (0, 3), (0, 7)]
        >>> Indexed('A', Idx('i', 3), Idx('j', 3), Idx('k', 3)).ranges
        [(0, 2), (0, 2), (0, 2)]
        >>> x, y, z = symbols('x y z', integer=True)
        >>> Indexed('A', x, y, z).ranges
        [None, None, None]
Returns a list of tuples with lower and upper range of each index.
Returns a list of tuples with lower and upper range of each index .
def ranges(self):
        """Returns a list of tuples with lower and upper range of each index.

        If an index does not define the data members upper and lower, the
        corresponding slot in the list contains ``None`` instead of a tuple.

        Examples
        ========

        >>> from sympy import Indexed,Idx, symbols
        >>> Indexed('A', Idx('i', 2), Idx('j', 4), Idx('k', 8)).ranges
        [(0, 1), (0, 3), (0, 7)]
        >>> Indexed('A', Idx('i', 3), Idx('j', 3), Idx('k', 3)).ranges
        [(0, 2), (0, 2), (0, 2)]
        >>> x, y, z = symbols('x y z', integer=True)
        >>> Indexed('A', x, y, z).ranges
        [None, None, None]

        """
        ranges = []
        for i in self.indices:
            try:
                ranges.append(Tuple(i.lower, i.upper))
            except AttributeError:
                ranges.append(None)
        return ranges
def ranges ( self ) : ranges = [ ] for i in self . indices : try : ranges . append ( Tuple ( i . lower , i . upper ) ) except AttributeError : ranges . append ( None ) return ranges