Add A New Column

Sat 17 May 2025

title: "Add a New Column" author: "Rj" date: 2019-04-20 description: "List Test" type: technical_note draft: false

import pandas as pd

data = {
    'city' : ['Toronto', 'Montreal', 'Waterloo'],
    'points' : [80, 70, 90]
}

data

{'city': ['Toronto', 'Montreal', 'Waterloo'], 'points': [80, 70, 90]}

type(data)

dict

df = pd.DataFrame(data)

df
city points
0 Toronto 80
1 Montreal 70
2 Waterloo 90 
df = df.assign(code = [1, 2, 3])

df
city points code
0 Toronto 80 1
1 Montreal 70 2
2 Waterloo 90 3

Score: 10

Category: data-wrangling