如何为数据框的新列添加字符串作为值

Question

I am trying to add string value and assign to a new column for dataframe , but could not figure it out the best way to do this.

Df['new'] = "my value"

But this is not working and I couldn't understand why, can someone please explain to me ? Or how exactly can I do this in Python using pandas dataframe ?

Answer 1

Do you mean this?

import pandas as pd

d = {'a':[1,2,3], 'b':[4,5,6]}
j = {'c':['a','hello','t']}
x = pd.DataFrame(d)
y = pd.DataFrame(j)
x.insert(2, 'c', y)