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

0 vote271 views1 answer
Save image to file from URL
Python
3 votes281 views2 answers
If not python
Python
0 vote268 views1 answer
Pandas view full dataframe
Python
0 vote293 views1 answer
Django models for existing database
Python Django
41 votes264 views6 answers
How to make a virtual environment in python
Python
1 vote264 views1 answer
Cmd to get ip address python
Python
0 vote277 views1 answer
Selenium ways of finding
Python
0 vote277 views1 answer
Pe039
Python
0 vote310 views1 answer
Print map object python
Python
0 vote279 views1 answer
Lucky number codechef solution
Python