/Python/After groupby how to add values in two rows to a list

After groupby how to add values in two rows to a list

In [1]: df = pd.DataFrame( {'a':['A','A','B','B','B','C'], 'b':[1,2,5,5,4,6]})
        df

Out[1]: 
   a  b
0  A  1
1  A  2
2  B  5
3  B  5
4  B  4
5  C  6

In [2]: df.groupby('a')['b'].apply(list)
Out[2]: 
a
A       [1, 2]
B    [5, 5, 4]
C          [6]
Name: b, dtype: object

In [3]: df1 = df.groupby('a')['b'].apply(list).reset_index(name='new')
        df1
Out[3]: 
   a        new
0  A     [1, 2]
1  B  [5, 5, 4]
2  C        [6]

Source: stackoverflow.com

Similar codes

6 votes334 views1 answer
Button in flask
Python
0 vote287 views1 answer
Conditional relationship sqlalchemy
Python
8 votes276 views1 answer
Input stdin python
Python
2 votes329 views2 answers
Mean deviation python
Python
0 vote363 views1 answer
CACHE_TYPE flask
Python Flask
0 vote303 views1 answer
How to check how many cameras are connected to device in python\
Python
6 votes298 views3 answers
Infinty in python
Python
0 vote301 views1 answer
Pouqoua sa march pô python ma fonction elle veut pas s'afficher aled
Python
60 votes310 views4 answers
Csv python write
Python
0 vote313 views1 answer
Python-Generating numbers according to a corellation matrix
Python