(self, i)
Delete the given column.

        Examples
        ========

        >>> from sympy.matrices import eye
        >>> M = eye(3)
        >>> M.col_del(1)
        >>> M
        Matrix([
        [1, 0],
        [0, 0],
        [0, 1]])

        See Also
        ========

        col
        row_del
Delete the given column.
Delete the given column .
def col_del(self, i):
        """Delete the given column.

        Examples
        ========

        >>> from sympy.matrices import eye
        >>> M = eye(3)
        >>> M.col_del(1)
        >>> M
        Matrix([
        [1, 0],
        [0, 0],
        [0, 1]])

        See Also
        ========

        col
        row_del
        """
        for j in range(self.rows - 1, -1, -1):
            del self._mat[i + j*self.cols]
        self.cols -= 1
def col_del ( self , i ) : for j in range ( self . rows - 1 , - 1 , - 1 ) : del self . _mat [ i + j * self . cols ] self . cols -= 1