全网公开数据分析优惠卷

import random
import datetime

class Coupon:
    def __init__(self, code, discount, expiry_date):
        self.code = code
        self.discount = discount
        self.expiry_date = expiry_date

def generate_coupon():
    code = ''.join(random.choices('ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789', k=8))
    discount = random.choice([10, 20, 30])  # 10%, 20%, 30% discounts
    expiry_date = datetime.date.today() + datetime.timedelta(days=30)
    return Coupon(code, discount, expiry_date)

def is_valid(coupon):
    return datetime.date.today() <= coupon.expiry_date

# Example usage
new_coupon = generate_coupon()
print(f"Coupon Code: {new_coupon.code}, Discount: {new_coupon.discount}%, Expires on: {new_coupon.expiry_date}")
if is_valid(new_coupon):
    print("This coupon is still valid.")
else:
    print("This coupon has expired.")