def import_plot_and_formatter(renderer='agg'):
    """
    Return matplotlib pyplot and FuncFormatter as a tuple
    
    :returns: a tuple of modules
    :rtype: tuple
    :param renderer: The renderer name. If renderer is None, it will not be set.
    :type renderer: str
    
    """
    from matplotlib import pyplot as plt
    from matplotlib.ticker import FuncFormatter
    return plt, FuncFormatter
