def load_orders(file_path):
    return

def validate_order(order):
    return

def filter_orders_by_customer(orders, customer_name):
    return

def calculate_order_total(order):
    return

def update_order_totals(orders):
    return

def get_top_expensive_orders(orders, n):
    return

def group_orders_by_customer(orders):
    return

def calculate_customer_spending(orders):
    return

def find_most_popular_product(orders):
    return

def generate_report(orders):
    return

def main():
    print("Hello")

if __name__ == "__main__":
    main()