loc and iloc (1)
With loc and ilocyou can do practically any data selection operation on DataFrames you can think of. loc is label-based, which means that you have to specify rows and columns based on their row and column labels. iloc is integer index based, so you have to specify rows and columns by their integer index like you did in the previous exercise.
Try out the following commands to experiment with loc and iloc to select observations. Each pair of commands here gives the same result.
cars.loc['RU']
cars.iloc[4]
cars.loc[['RU']]
cars.iloc[[4]]
cars.loc[['RU', 'AUS']]
cars.iloc[[4, 1]]
As before, code is included that imports the cars data as a Pandas DataFrame.
Diese Übung ist Teil des Kurses
Intermediate Python
Anleitung zur Übung
- Use
locorilocto select the observation corresponding to Japan as a Series. The label of this row isJPN, the index is2. Make sure to print the resulting Series. - Use
locorilocto select the observations for Australia and Egypt as a DataFrame. You can find out about the labels/indexes of these rows by inspectingcars. Make sure to print the resulting DataFrame.
Interaktive Übung
Vervollständige den Beispielcode, um diese Übung erfolgreich abzuschließen.
# Import cars data
import pandas as pd
cars = pd.read_csv('cars.csv', index_col = 0)
# Print out observation for Japan
# Print out observations for Australia and Egypt