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Insert Columns into a Pandas DataFrame

Let's find out how to add a column to a pandas DataFrame.

We'll cover the following...

Try it yourself

Try executing the code below to see the result.

Python 3.8
import pandas as pd
df = pd.DataFrame([
  ['Sterling', 83.4],
  ['Cheryl', 97.2],
  ['Lana', 13.2],
], columns=['name', 'sum'])
df.late_fee = 3.5
print(df)
...