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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 copy_path_flat(self):
 """Return a flattened copy of the current path This method is like :meth:`copy_path` except that any curves in the path will be approximated with piecewise-linear approximations, (accurate to within the current tolerance value, see :meth:`set_tolerance`). That is, the result is guaranteed to not have any elements of type :obj:`CURVE_TO <PATH_CURVE_TO>` which will instead be replaced by a series of :obj:`LINE_TO <PATH_LINE_TO>` elements. :returns: A list of ``(path_operation, coordinates)`` tuples. See :meth:`copy_path` for the data structure. """

        path = cairo.cairo_copy_path_flat(self._pointer)
        result = list(_iter_path(path))
        cairo.cairo_path_destroy(path)
        return result