案例：在列表之间移动元素
confirmed_users.py
#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列表
unconfirmed_users=[‘alice’,‘brain’,‘candace’]
confirmed_users=[]
#验证每个用户，直到没有未验证用户为止
#将每个经过验证的列表都移到已验证用户列表中
while unconfirmed_users:
current_user=unconfirmed_users.pop()
#pop()方法每次从列表末尾删除并存储到current_user中
print("Verifying user: “+current_user.title())
confirmed_users.append(current_user)
#显示所有已验证的用户
print(”\nThe following users have been confirmed: ")
for confirmed_user in confirmed_users:
print(confirmed_user.title())
#测试如下
Verifying user: Candace
Verifying user: Brain
Verifying user: Alice
The following users have been confirmed:
Candace
Brain
Alice
案例：删除包含特定值的所有列表元素 pets.py
pets=[‘dog’,‘cat’,‘dog’,‘goldfish’,‘cat’,‘rabbit’,‘cat’]
print(pets)
while ‘cat’ in pets:
pets.remove(‘cat’)
print(pets)
#测试如下
[‘dog’, ‘cat’, ‘dog’, ‘goldfish’, ‘cat’, ‘rabbit’, ‘cat’]
[‘dog’, ‘dog’, ‘goldfish’, ‘rabbit’]
案例：使用用户输入来填充字典 mountain_poll.py
responses={}
设置一个标志，指出调查是否继续
polling_active=True
while polling_active:
name=input("\nWhat is your name? ")
response=input("Which mountain would you like to climb someday? ")
#将答案存储在字典中 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 讯享网
#显示结果
print("\n—Poll Results—")
for name,response in responses.items():
print(name+ " would like to climb “+response+”.")
#测试如下
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