Answers for "pandas groupby tutorial"

2

pandas new df from groupby

df = pd.DataFrame(old_df.groupby(['groupby_attribute'])['mean_attribute'].mean())
df = df.reset_index()
df
Posted by: Guest on August-28-2020
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
0

df groupby loop

grouped = df.groupby('A')

for name, group in grouped:
    ...
Posted by: Guest on May-26-2020
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

pandas groupby

data.groupby('month', as_index=False).agg({"duration": "sum"})
Posted by: Guest on January-06-2021
0

Pandas groupby

>>> emp.groupby(['dept', 'gender']).agg({'salary':'mean'}).round(-3)
Posted by: Guest on August-09-2021

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