October 2019
Beginner to intermediate
674 pages
16h 43m
English
Content preview from Mastering pandas - Second Edition
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The pandas GroupBy operator
In pandas, we can achieve the same result by using the GroupBy function:
In [6]: import pandas as pd
importnumpy as np
In [7]: goal_stats_df=pd.read_csv('champ_league_stats_semifinalists.csv')
In [27]: goal_stats_df['GoalsPerGame']= goal_stats_df['Goals']/goal_stats_df['GamesPlayed']
In [27]: goal_stats_df['GoalsPerGame']= goal_stats_df['Goals']/goal_stats_df['GamesPlayed']
In [28]: goal_stats_df
Out[28]: Club Player Goals GamesPlayedGoalsPerGame
0 Atletico Madrid Diego Costa 8 9 0.888889
1 Atletico Madrid ArdaTuran 4 9 0.444444
2 Atletico Madrid RaúlGarcía 4 12 0.333333
3 Atletico Madrid AdriánLópez 2 9 0.222222
4 Atletico Madrid Diego Godín 2 10 0.200000
5 Real Madrid Cristiano Ronaldo 17 11 1.545455
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