Pandas groupby size column name

import pandas as pd

df = pd.DataFrame({'A': ['x', 'x', 'x','y','y']
                , 'B': ['a', 'c', 'c','b','b']})
print (df)
   A  B
0  x  a
1  x  c
2  x  c
3  y  b
4  y  b

df = df.groupby(['A', 'B']).size().reset_index(name='Size')
print (df)
   A  B  Size
0  x  a     1
1  x  c     2
2  y  b     2

Source: stackoverflow.com

Similar codes

6 votes353 views2 answers
Horizontal line matplotlib python
Python
0 vote358 views1 answer
Python turtle triangle
Python
0 vote386 views1 answer
''' python '''
Python
-1 vote327 views1 answer
How to play mp3 file form pygame module
Python
-1 vote362 views2 answers
Mro in python
Python
3 votes410 views1 answer
Code snippet
Python
0 vote346 views1 answer
Np shuffle
Python
0 vote299 views1 answer
Python ask for real values until negative value diplay highest and lowest
Python
0 vote341 views1 answer
Geodataframe get crs
Python
2 votes344 views2 answers
Pandas set options
Python