4. MultiIndex

Question 1

setting up multi index

Answer 1

df.set_index([“Date”,”Country”])

df = pd.read_csv(“bigmac.csv”,parse_dates=[“Date”], index_col=[“Date”,”Country”])

Question 2

df.index

Answer 2

return tuple

Question 3

breakdown df.index

Answer 3

df.index.get_level_values(“Country”)-> return normal index vector
or
df.index.get_level_values(1)

Question 4

change index name

Answer 4

df.index.set_names([“Day”,”Location”], inplace=True)

df. index.set_names(“Date”, level = “Day”)
df. index.set_names(“Date”, level = 0)