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Access and Modify DataFrames Values

Access and Modify DataFrames Values

Let's find out how to access and modify pandas DataFrame values.

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Try it yourself

Try executing the code below to see the result.

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Python 3.8
import pandas as pd
df = pd.DataFrame([
  ['Bugs', True, 72.3],
  ['Daffy', False, 30.7],
  ['Tweety', True, 23.5],
  ['Elmer', False, 103.9],
], columns=['Customer', 'Member', 'Amount'])
df[df['Member']]['Amount'] *= 0.9
print(df)

Explanation

The change is not reflected in df. The reason is ...