Creating a dataframe from list and existing dataframe

Question

I have a dataframe in the form of

column 1 column 2 column 3

And I would like to add values to it. I have a list which I would like to add which is in the form of:

a= [['Master Vithal', ' Vithal Zubeida'], ['Firozshah Mistry', ' B Irani'], ['Grigor']]

How do I add elements in this list so that a[0] will go to column 1 and so on. Thanks in advance!

Answer 1

You can use .loc to add elements of list a at the end of the dataframe, as follows:

import numpy as np

cols = ['column 1', 'column 2',  'column 3']    # enter your selected columns here
df.loc[len(df), cols] = np.array(a, dtype='object')[0:len(cols)]

Demo

import numpy as np

df = pd.DataFrame(columns=['column 1', 'column 2',  'column 3'])
a= [['Master Vithal', ' Vithal Zubeida'], ['Firozshah Mistry', ' B Irani'], ['Grigor']]

cols = ['column 1', 'column 2',  'column 3']
df.loc[len(df), cols] = np.array(a, dtype='object')[0:len(cols)]

print(df)

                           column 1                      column 2  column 3
0  [Master Vithal,  Vithal Zubeida]  [Firozshah Mistry,  B Irani]  [Grigor]