Combining Your Knowledge
If you remember, several chapters ago you were provided with information on how to write several conditions simultaneously. With the .isin() statement, you can use the same rules. For instance, an example from the previous chapter could look like this:
# The initial example
import pandas as pd
data = pd.read_csv('https://codefinity-content-media.s3.eu-west-1.amazonaws.com/4bf24830-59ba-4418-969b-aaf8117d522e/cars.csv', index_col = 0)
models = ['HONDA', 'FORD', 'MERCEDES-BENZ', 'HYUNDAI']
data_extracted = data.loc[data['Manufacturer'].isin(models)]
print(data_extracted.head())
# The modified example
import pandas as pd
data = pd.read_csv('https://codefinity-content-media.s3.eu-west-1.amazonaws.com/4bf24830-59ba-4418-969b-aaf8117d522e/cars.csv', index_col = 0)
models = ['HONDA', 'FORD', 'MERCEDES-BENZ', 'HYUNDAI']
condition = data['Manufacturer'].isin(models)
data_extracted = data.loc[condition]
print(data_extracted.head())
The output in these two cases will be the same.
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Can you explain what the `.isin()` function does in this context?
What is the difference between using the condition directly in `.loc[]` and assigning it to a variable first?
Can you show more examples of using `.isin()` with different columns?
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If you remember, several chapters ago you were provided with information on how to write several conditions simultaneously. With the .isin() statement, you can use the same rules. For instance, an example from the previous chapter could look like this:
# The initial example
import pandas as pd
data = pd.read_csv('https://codefinity-content-media.s3.eu-west-1.amazonaws.com/4bf24830-59ba-4418-969b-aaf8117d522e/cars.csv', index_col = 0)
models = ['HONDA', 'FORD', 'MERCEDES-BENZ', 'HYUNDAI']
data_extracted = data.loc[data['Manufacturer'].isin(models)]
print(data_extracted.head())
# The modified example
import pandas as pd
data = pd.read_csv('https://codefinity-content-media.s3.eu-west-1.amazonaws.com/4bf24830-59ba-4418-969b-aaf8117d522e/cars.csv', index_col = 0)
models = ['HONDA', 'FORD', 'MERCEDES-BENZ', 'HYUNDAI']
condition = data['Manufacturer'].isin(models)
data_extracted = data.loc[condition]
print(data_extracted.head())
The output in these two cases will be the same.
¡Gracias por tus comentarios!
