ModuleNotFoundError: No module named 'pandas'

Occurs when importing a module that is not installed.

Reproduce

import pandas as pd

data = [1, 2, 3]
df = pd.DataFrame(data)

print(df)

ModuleNotFoundError: No module named 'pandas'

data = [1, 2, 3]

print(data)

Used a library without checking if it was installed.