>>> import pandas as pd
>>> from mountains import parent

>>> dfp = pd.read_csv('peaks.csv')
>>> s1 = parent(dfp)
>>> type(s1)
<class 'pandas.core.series.Series'>
>>> len(s1)
47
>>> s1.head()
Parent mountain
Mount Everest    250
Cho Oyu          136
Gasherbrum I     118
K2                88
Dhaulagiri        76
Name: Ascents, dtype: int64

>>> s1['Batura Sar']
24

>>> s1.tail(3)
Parent mountain
Tongshanjiabu         1
Ismail Samani Peak    1
Yukshin Gardan Sar    1
Name: Ascents, dtype: int64

>>> s2 = parent(dfp[60:80])
>>> type(s2)
<class 'pandas.core.series.Series'>
>>> len(s2)
17
>>> s2.head()
Parent mountain
Lhotse              7
Gasherbrum I        6
Noshaq              6
Malubiting          4
Gangkhar Puensum    4
Name: Ascents, dtype: int64