import numpy as np
import requests

def main():
    # NumPy example
    arr = np.array([1, 2, 3, 4, 5])
    print(f"Array: {arr}")
    print(f"Mean: {np.mean(arr)}")
    print(f"Std Dev: {np.std(arr)}")
    
    # Requests example
    try:
        response = requests.get('http://localhost:3000')
        print(f"\nAPI Response: {response.json()}")
    except:
        print("\nCouldn't connect to Express server. Make sure it's running!")

if __name__ == "__main__":
    main()