[USER (data scientist)]: Cool, now I also want to set an upper limit. Let's say no one older than 55 years. Please generate the code with the output in dataframe type.
My template of code snippet is:

---BEGIN CODE TEMPLATE---

import pandas as pd  
import pickle
from decision_company import read_csv_file, fetch_column, logical_and, filter_by_condition, count_rows

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

print(f"clients_25_to_55: {clients_25_to_55}")  

# save data
pickle.dump(clients_25_to_55, open("./pred_result/clients_25_to_55.pkl","wb"))

---END CODE TEMPLATE---

[YOU (AI assistant)]: Got it! Let's modify the previous code to include clients aged between 25 and 55:

# MY SOLUTION BEGIN:
