Python 为什么我的循环没有在未确认用户的完整列表中运行，并继续弹出，直到未确认用户为空？

你的循环

unconfirmed_users = ['mikey', 'ethan', 'bob']

confirmed_users = []

while unconfirmed_users:
    current_users = unconfirmed_users.pop()

print('Verifying user: ' + current_users.title())
confirmed_users.append(current_users)


print('\nThe following users have been verified: ')

for users in confirmed_users:
    print(users.title())

运行完整的

未确认的\u用户

，因为您要求它这样做：而循环运行直到条件为真。在Python中，当列表为epmty（长度为零）时，bool（list）=False。 因此，只需检查缩进：

while unconfirmed_users:
    current_users = unconfirmed_users.pop()

你的循环

unconfirmed_users = ['mikey', 'ethan', 'bob']

confirmed_users = []

while unconfirmed_users:
    current_users = unconfirmed_users.pop()

print('Verifying user: ' + current_users.title())
confirmed_users.append(current_users)


print('\nThe following users have been verified: ')

for users in confirmed_users:
    print(users.title())

运行完整的

未确认的\u用户

，因为您要求它这样做：而循环运行直到条件为真。在Python中，当列表为epmty（长度为零）时，bool（list）=False。 因此，只需检查缩进：

while unconfirmed_users:
    current_users = unconfirmed_users.pop()

---

缩进错误，应将当前用户=。。。以及while循环块内的print语句：

unconfirmed_users = ['mikey', 'ethan', 'bob']

confirmed_users = []

while unconfirmed_users:
    current_users = unconfirmed_users.pop()
    print('Verifying user: ' + current_users.title())
    confirmed_users.append(current_users)


print('\nThe following users have been verified: ')

for users in confirmed_users:
    print(users.title())

输出：

unconfirmed_users = ['mikey', 'ethan', 'bob']

confirmed_users = []

while unconfirmed_users:
    current_users = unconfirmed_users.pop()

    print('Verifying user: ' + current_users.title())
    confirmed_users.append(current_users)


print('\nThe following users have been verified: ')

for users in confirmed_users:
    print(users.title())

---

缩进错误，应将当前用户=。。。以及while循环块内的print语句：

unconfirmed_users = ['mikey', 'ethan', 'bob']

confirmed_users = []

while unconfirmed_users:
    current_users = unconfirmed_users.pop()
    print('Verifying user: ' + current_users.title())
    confirmed_users.append(current_users)


print('\nThe following users have been verified: ')

for users in confirmed_users:
    print(users.title())

输出：

unconfirmed_users = ['mikey', 'ethan', 'bob']

confirmed_users = []

while unconfirmed_users:
    current_users = unconfirmed_users.pop()

    print('Verifying user: ' + current_users.title())
    confirmed_users.append(current_users)


print('\nThe following users have been verified: ')

for users in confirmed_users:
    print(users.title())