>>> import pandas as pd
>>> from mountains import failed

>>> dfp = pd.read_csv('peaks.csv')
>>> failed(dfp, 'Mahalangur Himalaya', 8000, 9000)
(121, 26)
>>> failed(dfp, 'Baltoro Karakoram', 8000, 9000)
(44, 12)
>>> failed(dfp, 'Hispar Karakoram', 7500, 8000)
(6, 1)
>>> failed(dfp, 'Hispar Karakoram', 7000, 7500)
(6, 0)