Question

我是python的初学者，我有一个字典，其密钥名称和值作为deque，当我在我的deque中添加它有效时，但是当我尝试用popleft撤销时，只有第一个工作

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

追溯：

18 Traceback（最近一次调用最后一次）：文件“main.py”，第23行，in 打印EmployeePoint.dic [“Rafael”]。popleft（）。point AttributeError：'list'对象没有属性'point'

Answer 1

初始化 deque 可以使用deque([people1])，但您不应该在其中附加一个包含一个项目的列表（例如[people2] .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deque，不工作第二个popleft或第一个流行音乐。蟒蛇

1 个答案: