def frame_to_yaml_safe(frame):
    return {col: series_to_yaml_safe(series)
            for col, series in frame.iteritems()}
The instance should return JSON representation of it's internal
dataset/ETHPy150Open UDST/urbansim/urbansim/utils/yamlio.py/frame_to_yaml_safe--crossover with--dataset/ETHPy150Open memphis-iis/GLUDB/gludb/data.py/Storable.to_data