how to find highest 20 using pandas code example

Example 1: nlargest

>>> df.nlargest(3, 'population')
        population      GDP alpha-2
France    65000000  2583560      FR
Italy     59000000  1937894      IT
Malta       434000    12011      MT

Example 2: only get top 10 python dataframe

df[df['Ticket'] == 1].sort_values('Age')['Names'].head(10)