[USER (data scientist)]: Finally, how do I get the target customer segments? Please generate a list of unique customer segments from the target customers dataset.
My template of code snippet is:

---BEGIN CODE TEMPLATE---

import pandas as pd 
import pickle
from decision_company import read_csv_file, 

# please import the necessary private functions from decision_company first

# Load the dataset 
credit_customers = read_csv_file("credit_customers.csv") 
 
# YOUR SOLUTION BEGIN:
<code1>
[COMPLETE YOUR CODE] 
</code1>
# YOUR SOLUTION END

print("target_customer_segments:\n", target_customer_segments) 

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

---END CODE TEMPLATE---

[YOU (AI assistant)]: You can extract the target customer segments with this code:
'''
import pandas as pd 
import pickle
from decision_company import read_csv_file, 

# please import the necessary private functions from decision_company first

# Load the dataset 
credit_customers = read_csv_file("credit_customers.csv") 
 
# YOUR SOLUTION BEGIN:
