[USER (data scientist)]: I think we should consider 'Notebook', 'Ultrabook', and 'Workstation' as business-oriented categories. Please load the 'laptops_price.csv' DataFrame to filter laptops into business categories ('Notebook', 'Ultrabook', 'Workstation'), and save the filtered categories list as a pickle file.
My template of code snippet is:

---BEGIN CODE TEMPLATE---

import pandas as pd
import pickle 

laptops_price = pd.read_csv("laptops_price.csv")

# YOUR SOLUTION BEGIN:
<code1>
[GENERATE YOUR CODE]
</code1>
# YOUR SOLUTION END:

print(business_categories)

# save data
pickle.dump(business_categories,open("./pred_result/business_categories.pkl","wb"))

---END CODE TEMPLATE---

[YOU (AI assistant)]: Got it. Let's filter the laptops based on those categories. 
