TypeError：不可排序的类型：ShiftSupervisor() < int()

Question

当我使用以下程序运行以下程序时，我得到了不可排序的类型： Employee 类的 ShiftSupervisor 子类。在这个子类中，我想根据输入主程序时的年销售额来确定奖金 $。

#This Employee class holds general data about employess and will
# end up as the superclass for this example.

class Employee:
  def __init__(self, emp_name, emp_number):
    self.emp_name = emp_name
    self.emp_number = emp_number

  def set_emp_name(self, emp_name):
    self.emp_name = emp_name

  def set_emp_number(self, emp_number):
    self.emp_number = emp_number

  def get_emp_name(self):
    return self.emp_name

  def get_emp_number(self):
    return self.emp_number

#The ShiftSupervisor class holds the general data from superclass Employee
# as well as Employee shift time and pay rate making it a subclass
# of Employee.

class ShiftSupervisor(Employee):

  def __init__(self, emp_name, emp_number, annual_salary, sales):
    #call the superclass
    Employee.__init__(self, emp_name, emp_number)
    self.annual_salary = annual_salary
    self.sales = sales

  def set_annual_salary(self, salary):
      self.annual_salary = salary

  def set_sales(self,sales):
    self.sales = sales

  def get_annual_salary(self):
    return self.annual_salary

  def get_sales(self):
    return self.sales

#Determining the bonus based on the sales figures.
  def bonus_rate(sales):
    if sales <10000:
      bonus_rate = sales*0.10
    if sales >=10000 and sales <= 14999:
      bonus_rate = sales*0.12
    if sales >=15000 and  sales <=17999:
      bonus_rate = sales*0.14
    if sales >=18000 and sales <= 21999:
      bonus_rate = sales*0.16
    else:
      bonus_rate = sales*0.18
      return bonus_rate

# The main program
import shiftsupervisor
def main():
  first = input("Enter the shift supevisor's first name:  ")
  last = input("Enter the the shift supevisor's last name:  ")
  emp_number = input("Enter the shift supevisor's  ID number.  ")
  salary = float(input("What is the annual salary of the shift supevisor?  $"))
  sales = float(input("What are the annual sales for the shift?  $"))
  emp_name = first + " " +last

  supervisor = shiftsupervisor.ShiftSupervisor(emp_name, emp_number, salary, sales)

  print()
  print('\t Shift Supervisor Information')
  print('---------------------------------------------------------------')
  print("Supervisor Name:        \t\t", supervisor.get_emp_name())
  print("Employee  Number:\t\t", supervisor.get_emp_number())
  print("Annual Salary for the supervisor is:  \t$ " , format(supervisor.get_annual_salary(),',.2f'),sep='')
  print("Annual Bonus for the supervisor is: \t$ ", format(supervisor.bonus_rate(), ',.2f'),sep = '')

main()

Answer 1

Python 方法的第一个参数始终是类的实例，传统上命名为“self”。要访问类的实例成员，您需要使用“self.name”语法。

 def bonus_rate(self):
     if self.sales < 10000:
          ....