>>> import pandas as pd
>>> from peaks import max_ascents

>>> dfpeaks = pd.read_csv('peaks.csv')
>>> max_ascents(dfpeaks, 'Nepal + China', 1955)
('Makalu', 45)
>>> max_ascents(dfpeaks, 'Nepal + China', 1956)
('Lhotse', 26)
>>> max_ascents(dfpeaks, 'India', 1955)
('Saser Kangri I / K22', 6)
>>> max_ascents(dfpeaks, 'Pakistan', 1950)
('Nanga Parbat', 52)
>>> max_ascents(dfpeaks, 'China', 1966)
('Changtse', 9)