字典键和双端队列，不工作第二个 popleft 或第一个 pop。 python

Question

我是 python 的初学者，我有一个字典，其中的键名和值作为双端队列，当我添加到我的双端队列时它有效，但是当我尝试使用 popleft 退出时，只有第一个有效

from collections import deque

class EmployeePoint:

    dic = {}

    def __init__(self,name,point):

        self.name = name
        self.point = point


people1 = EmployeePoint("Rafael","18")
people2 = EmployeePoint("Rafael","19")
people3 = EmployeePoint("Rafael","20")

EmployeePoint.dic["Rafael"] = deque([people1])
EmployeePoint.dic["Rafael"].append([people2])
EmployeePoint.dic["Rafael"].append([people3])


print EmployeePoint.dic["Rafael"].popleft().point
print EmployeePoint.dic["Rafael"].popleft().point

回溯：

18 追溯（最近一次通话）：文件 "main.py"，第 23 行，位于打印 EmployeePoint.dic["Rafael"].popleft().point AttributeError: 'list' 对象没有属性 'point'

Answer 1

使用 deque([people1]) 初始化 deque 没问题，但您不应该附加一个包含其中一项的列表（即 [people2] 而不是 .append(people2)

from collections import deque

class EmployeePoint:

    dic = {}

    def __init__(self,name,point):

        self.name = name
        self.point = point


people1 = EmployeePoint("Rafael","18")
people2 = EmployeePoint("Rafael","19")
people3 = EmployeePoint("Rafael","20")

EmployeePoint.dic["Rafael"] = deque([people1])
EmployeePoint.dic["Rafael"].append(people2)
EmployeePoint.dic["Rafael"].append(people3)


print (EmployeePoint.dic["Rafael"].popleft().point)
print (EmployeePoint.dic["Rafael"].popleft().point) 
# py3 print paretheses

输出：

18

19

字典键和双端队列，不工作第二个 popleft 或第一个 pop。 python

Dictionary key and deque, dont work second popleft or first pop. python

python

deque