def shareable_parameters(cells):
    """Return parameter names if the parameters are shareable among cells.

    Parameters are shareable among multiple cells when all the cells
    have the parameters in the same order if they ever have any.

    For example, if cells are foo(), bar(x), baz(x, y), then
    ('x', 'y') are shareable parameters amounts them, as 'x' and 'y'
    appear in the same order in the parameter list if they ever appear.

    Args:
        cells: An iterator yielding cells.

    Returns:
        None if parameters are not share,
        tuple of shareable parameter names,
        () if cells are all scalars.
    """
    result = []
    for c in cells.values():
        params = c.formula.parameters

        for i in range(min(len(result), len(params))):
            if params[i] != result[i]:
                return None

        for i in range(len(result), len(params)):
            result.append(params[i])

    return result
def shareable_parameters(cells):
    """Return parameter names if the parameters are shareable among cells.

    Parameters are shareable among multiple cells when all the cells
    have the parameters in the same order if they ever have any.

    For example, if cells are foo(), bar(x), baz(x, y), then
    ('x', 'y') are shareable parameters amounts them, as 'x' and 'y'
    appear in the same order in the parameter list if they ever appear.

    Args:
        cells: An iterator yielding cells.

    Returns:
        None if parameters are not share,
        tuple of shareable parameter names,
        () if cells are all scalars.
    """
    result = []
    for c in cells.values():
        params = c.formula.parameters

        for i in range(min(len(result), len(params))):
            if params[i] != result[i]:
                return None

        for i in range(len(result), len(params)):
            result.append(params[i])

    return result
def shareable_parameters ( cells ) : result = [ ] for c in cells . values ( ) : params = c . formula . parameters for i in range ( min ( len ( result ) , len ( params ) ) ) : if params [ i ] != result [ i ] : return None for i in range ( len ( result ) , len ( params ) ) : result . append ( params [ i ] ) return result
Return parameter names if the parameters are shareable among cells.

    Parameters are shareable among multiple cells when all the cells
    have the parameters in the same order if they ever have any.

    For example, if cells are foo(), bar(x), baz(x, y), then
    ('x', 'y') are shareable parameters amounts them, as 'x' and 'y'
    appear in the same order in the parameter list if they ever appear.

    Args:
        cells: An iterator yielding cells.

    Returns:
        None if parameters are not share,
        tuple of shareable parameter names,
        () if cells are all scalars.
Return parameter names if the parameters are shareable among cells .