# 首先，创建一个待验证用户列表
# 和一个用于存储已验证用户的空列表
unconfirmed_users = ['alice', 'brian', 'candace']
confirmed_users = []

# 验证每个用户， 直到没用未验证用户为止。
# 将每个经过验证的用户都移到已验证用户列表中
while unconfirmed_users:
    current_user = unconfirmed_users.pop()

    print(f"Verifying user: {current_user.title()}")
    confirmed_users.append(current_user)

# 显示所有已验证的用户
print(f"The following users have been confirmed: ")
for confirmed_user in confirmed_users:
    print(confirmed_user.title())

使用用户输入来填充字典

responses = {}

# 设置一个标志（flag），指出调查是否继续
polling_active = True
while polling_active:
    # 提示输入被调查者的名字和回答
    name = input("\nWhat is your name")
    response = input("Which mountain would you like to climb someday")

    # 将回答存储到字典
    responses[name] = response

    # 看看是否还有人要参与调查
    repeat = input("Would you like to let another person respond? (yes/no)")
    if repeat == 'no':
        polling_active = False

# 调查结束，显示结果
print('\n--- Poll Results ---')
for name, response in responses.items():
    print(f"{name.title()} would like to climb {response}")