| # Example: Calculate NPV | |
| import numpy as np | |
| def calculate_npv(cash_flows, discount_rate): | |
| return np.npv(discount_rate, cash_flows) | |
| # Example usage | |
| cash_flows = [-1000, 300, 400, 500] | |
| discount_rate = 0.1 | |
| npv = calculate_npv(cash_flows, discount_rate) | |
| print(f"NPV: {npv}") |