Pandas agg rename columns

How can i aggregate without group by in pandas

df.groupby(lambda _ : True).agg(new_col_name = ('col_name', 'agg_function'))

Pandas agg rename columns

grouped = df.groupby('id').agg({'col1': [('name1', 'sum')], 'col2': [('name2_mean', 'sum'), ('name2_custom_std', lambda x: np.std(x))]})
grouped.columns = grouped.columns.droplevel()

Similar codes

1 vote195 views1 answer
Convert url to base64 image py
Python
1 vote169 views1 answer
Numpy slice array into chunks
Python
1 vote213 views1 answer
How to open sound file in python
Python
0 vote284 views1 answer
Aiohttp.client_exceptions.ClientConnectorCertificateError
Python
1 vote183 views1 answer
How to set bgcolor of a widget in pyqt5
Python
0 vote204 views1 answer
Python access each group
Python
0 vote195 views1 answer
Inverse of a matrix with determinant 0 python linalg
Python
3 votes192 views2 answers
How to add list numbers in python
Python
2 votes171 views1 answer
How to change the color of the cursor in tkinter
Python
28 votes204 views2 answers
How to create a datetime object in python
Python