用python编程小票

<code class="python">import os
import sys
from datetime import datetime
from decimal import Decimal</code>

<code class="python">RECEIPT_NO = os.environ.get("RECEIPT_NO")
RECEIPT_DATE = datetime.now()
TAX_RATE = Decimal(0.08)
STORE_NAME = "Your Store Name"
STORE_ADDRESS = "Your Store Address"</code>

<code class="python">items = [
    ("Product 1", 1, Decimal(10.00), Decimal(10.00)),
    ("Product 2", 2, Decimal(5.00), Decimal(10.00)),
]</code>

<code class="python">subtotal = sum(item[2] * item[3] for item in items)
total_tax = subtotal * TAX_RATE
total_amount = subtotal + total_tax</code>

<code class="python">def print_receipt():
    print("-" * 40)
    print(f"Receipt No.: {RECEIPT_NO}")
    print(f"Date: {RECEIPT_DATE.strftime('%Y-%m-%d %H:%M:%S')}")
    print(f"Store Name: {STORE_NAME}")
    print(f"Store Address: {STORE_ADDRESS}")
    print("-" * 40)
    print("Item\t\tQty\tPrice\tAmount")
    print("-" * 40)
    for item in items:
        print(f"{item[0]}\t\t{item[1]}\t{item[2]}\t{item[3]}")
    print("-" * 40)
    print(f"Subtotal: {subtotal:.2f}")
    print(f"Tax: {total_tax:.2f}")
    print(f"Total: {total_amount:.2f}")
    print("-" * 40)</code>

<code class="python">if __name__ == "__main__":
    print_receipt()</code>