# 找到第一個符合條件的值就退出
numbers = [4, 7, 2, 9, 1, 5]
target = 9
for num in numbers:
    if num == target:
        print(f"找到目標數字：{target}")
        break

# 直到輸入正確才退出循環
while True:
    password = input("請輸入密碼：")
    if len(password) >= 6:
        print("密碼設置成功")
        break
    print("密碼太短，請重新輸入")

# 只處理偶數
for num in range(10):
    if num % 2 != 0:
        continue
    print(f"處理偶數：{num}")

# 過濾無效數據
data = ["apple", "", "banana", None, "orange", ""]
for item in data:
    if not item:  # 跳過空值
        continue
    print(f"處理數據：{item}")