[bug] Housing data is not unique by latitude and longitude

Enter the chapter number

Chapter 2

Enter the page number

117

What is the cell's number in the notebook

15

Enter the environment you are using to run the notebook

Jupyter on MacOS

Describe your issue

I don’t think the assumption that each (latitude, longitude) pair is unique is correct.

df["id"] = (df["longitude"] * 1000 + df["latitude"])
df['id'].value_counts()

There are 15 rows with (-122.41;37.8)

Thank you for this great book!

Enter what you expected to happen

No response

If you found a workaround, describe it here

No response