Question

我正在尝试通过用户输入创建一个employee对象，但我遇到了代码问题。当我跑步时，没有任何事情发生，它也没有抛出任何错误。

class employee(object):

    def __init__(self,name,pay_rate,monday,tuesday,wednesday,thursday,friday,saturday,sunday):
        self.create_employee()
        self.name = name
        self.pay_rate = pay_rate
        self.monday = monday
        self.tuesday = tuesday
        self.wednesday = wednesday
        self.thursday = thursday
        self.friday = friday
        self.saturday = saturday
        self.sunday = sunday


    def weekly_total(self):
        self.total_weekly_hours = self.monday + self.tuesday + self.wednesday + self.thursday + self.friday + self.saturday + self.sunday        
        self.emp_name()
        print "\n  Your hours this week are:", self.total_weekly_hours,"\n"


    def emp_name(self):
        print "\n  Current employee is: ",self.name


    def create_employee(self):
        self.name = raw_input("Enter new employee name")
        self.pay = input("Enter pay rate")
        self.monday = raw_input("Enter monday hours")
        self.tuesday = raw_input("tuesday hours?")
        self.wednesday = raw_input("wed hours?")
        self.thursday = raw_input("Thursday hours?")
        self.friday = raw_input("Friday hours?")
        self.saturday = raw_input("saturday hours?")
        self.sunday = raw_input("sunday hours?")
        self.object_name = raw_input("Name your object")

        self.object_name = employee(self.name,self.pay,self.monday,self.tuesday,self.wednesday,self.thursday,self.friday,self.saturday,self.sunday)
        print self.name, " was created"

Answer 1

这个没有运行的原因是因为你已经定义了一个类，但是没有什么可以实例化那个类，所以当你运行它时没有任何反应。

但是，如果您要添加该代码来实例化一个类，请说：

e = employee()
e.create_employee()

如@jonrsharpe所述，您会遇到由代码的循环性质引起的错误。

你可以将create_employees移到类之外，让它成为一个包装器，它接受输入（转换为常规变量，或dict，但不是类本身），并使用它来实例化对象那个输入。然后，您可以从脚本的 main 部分调用该函数。

我建议您阅读类上的 Python 文档，这样您就可以更熟悉 OO 范例了：

https://docs.python.org/2/tutorial/classes.html

Answer 2

您当前的代码中有一个无休止的循环，因为__init__和create_employee互相调用。你为初始化器中的所有属性接受参数，然后忽略它们并要求输入用户输入，然后将其传递给新对象的初始化器，忽略它并... ...

我认为你想要的是一个更像是的结构：

class Employee(object): # PEP-8 name

    def __init__(self, name, pay, hours):
        # assign instance attributes (don't call from_input!)

    def __str__(self):
        # replaces emp_name, returns a string 

    @property
    def weekly_total(self):
        return sum(self.hours)

    @classmethod
    def from_input(cls):
        # take (and validate and convert!) input
        return cls(name, pay, hours)

您可以使用：

employee = Employee("John Smith", 12.34, (8, 8, 8, 8, 8, 0, 0))
print str(employee) # call __str__

或者：

employee = Employee.from_input()
print employee.weekly_total # access property

请注意，我并没有为不同的日子提供单独的实例属性，而是假设每天都有一个单独的小时列表/元组。如果日期名称很重要，请使用字典{'Monday': 7, ...}。请记住，所有raw_input都是一个字符串，但您可能需要数小时并支付浮点数;有关输入验证的更多信息，请参阅here。

Answer 3

我想你想要这样的东西

class employee(object):
    def __init__(self,name,pay_rate,monday,tuesday,wednesday,thursday,friday,saturday,sunday):
        self.name = name
        self.pay_rate = pay_rate
        self.monday = monday
        self.tuesday = tuesday
        self.wednesday = wednesday
        self.thursday = thursday
        self.friday = friday
        self.saturday = saturday
        self.sunday = sunday
    @staticmethod
    def create_from_rawinput():
        return employee(
        raw_input("Employee name:"),
        raw_input("Pay Rate:"),
        raw_input("Enter monday hours:"),
        raw_input("Enter tuesday hours:"),
        raw_input("Enter wednesday hours:"),
        raw_input("Enter thursday hours:"),
        raw_input("Enter friday hours:"),
        raw_input("Enter saturday hours:"),
        raw_input("Enter sunday hours:")
        )

new_emp = employee.create_from_rawinput()

试图通过用户的输入创建一个对象

3 个答案: