Answers for "using groupby in pandas dataframe"

20

group by pandas examples

>>> n_by_state = df.groupby("state")["state"].count()
>>> n_by_state.head(10)
state
AK     16
AL    206
AR    117
AS      2
AZ     48
CA    361
CO     90
CT    240
DC      2
DE     97
Name: last_name, dtype: int64
Posted by: Guest on May-21-2020
8

groupby in pandas

>>> df = pd.DataFrame({'Animal': ['Falcon', 'Falcon',
...                               'Parrot', 'Parrot'],
...                    'Max Speed': [380., 370., 24., 26.]})
>>> df
   Animal  Max Speed
0  Falcon      380.0
1  Falcon      370.0
2  Parrot       24.0
3  Parrot       26.0
>>> df.groupby(['Animal']).mean()
        Max Speed
Animal
Falcon      375.0
Parrot       25.0
Posted by: Guest on December-14-2020
-1

groupby

df.groupby(sepal_len_groups)['sepal length (cm)'].agg(count='count')

sum_sep = sep.groupby('Year').agg({'TotalProjects':'sum',
                                   'TotalFunds':'sum',
                                   'TotalFunds':'count',
                                   'SubDistrict':'count'})
                                   
sum_sep.stb.subtotal(grand_label='Total').applymap('{:,.0f}'.format)
Posted by: Guest on September-19-2021

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