Doubt in slicing dataframe

Q&A DQ Courses
,
#1

Screen Link:
https://app.dataquest.io/m/291/introduction-to-pandas/12/summary-challenge

My Code:

bottom_companies = f500['National Grid':'AutoNation', ['rank', 'sector', 'country'] ]

What I expected to happen:
I expected this code to work as we do not have to use the ‘.loc’ for when we want to select a slice of rows, or a list of columns. However the dataframe.loc has to be used to select a slice of rows and a list of columns.

1 Like
#2

You are trying to select at the same time a slice of rows and a list of columns from the dataframe. That’s a complex operation. There is no shorthand for this, you need yo use .loc.

Actually, I think it is better to always use .iloc and .iloc. But that is only my opinion.

2 Likes
#3

Try this.
bottom_companies = f500.loc[‘National Grid’:‘AutoNation’, [‘rank’, ‘sector’, ‘country’] ]

When you are trying to slice both rows and columns, use “.loc” always.

1 Like