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import jax.numpy as jnp # JAX for array computations
from dataclasses import dataclass
import sys # For handling potential input errors
@dataclass
class NFTProduct:
"""Dataclass to hold NFT product details, equivalent to the C++ struct."""
name: str
quantity_in_stock: float # Renamed for Pythonic style
average_sale_price: float # Renamed for Pythonic style
def load_products_from_url():
"""Simulate loading products from a URL, as in the original code."""
return [
NFTProduct(name="Product A", quantity_in_stock=50, average_sale_price=500.0),
NFTProduct(name="Product B", quantity_in_stock=20, average_sale_price=250.0)
]
def estimate_cash_street_value(products):
"""Estimate the cash-street value using JAX for array operations.
Converts the product data to JAX arrays and computes the total value.
"""
if not products:
return 0.0 # Handle edge case where no products are available
# Extract quantities and prices into JAX arrays
quantities = jnp.array([p.quantity_in_stock for p in products])
prices = jnp.array([p.average_sale_price for p in products])
# Compute total value using JAX array operations
total_value = jnp.sum(jnp.multiply(quantities, prices))
return total_value # JAX will return a JAX array, which can be used as a float
def calculate_d():
"""Function to calculate D based on user inputs, as in the first main.
This handles user input for R and H, and computes D.
"""
try:
# Get user input with prompts
r_input = input("Enter the observed value (R, closer to but less than 20000): ")
R = float(r_input) # Convert to float; corrected from original undeclared variable
if R >= 20000: # Add basic validation based on the comment
print("Warning: R should be closer to but less than 20000. Proceeding anyway.")
h_input = input("Enter the hidden property factor (H): ")
H = float(h_input) # Convert to float
# Calculation of D using plain Python (no JAX needed for scalar ops, but could be added)
D = R + 20000 * H
print(f"The calculated D value is: {D}")
return D # Return for potential further use
except ValueError:
print("Error: Invalid input. Please enter numeric values for R and H.")
sys.exit(1) # Exit gracefully on error
if __name__ == "__main__":
# Execute the first part (calculate D)
calculate_d()
# Execute the second part (NFT estimation)
products = load_products_from_url()
total_cash_street_value = estimate_cash_street_value(products)
# Output the result
print(f"The estimated Cash-Street Value of the institutional NFT products is: ${total_cash_street_value}")
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