Assigning multiple column values in a single row of pandas DataFrame, in one line

Question

I\'m trying to Assign multiple values to a single row in a DataFrame and I need the correct syntax.

See the code below.

import pandas as pd

df = p         


        

Answer 1

Use loc (and avoid chaining):

In [11]: df.loc[3] = ['V1', 4.3, 2.2, 2.2, 20.2]

This ensures the assigning is done inplace on the DataFrame, rather than on a copy (and garbage collected).

You can specify only certain columns:

 In [12]: df.loc[3, list('ABCDE')] = ['V1', 4.3, 2.2, 2.2, 20.2]