# 1. 相加：合併兩個名單
group_a = ['Apple', 'Banana']
group_b = ['Orange', 'Grape']
all_fruits = group_a + group_b
print(f"合併後的名單: {all_fruits}")

# 2. 乘以數字：快速重複元素
star = ['★']
rank = star * 5
print(f"五星好評: {rank}")

# 3. 空值判斷：檢查購物車
basket = []
# if basket:
#   print("有內容")
# else:
#   print("無內容")

if not basket:
    print("購物車是空的，快去買東西吧！")