Question

我目前是第一年学习python编程的学生，我们目前正在研究模块/功能。我的代码出现错误：

Traceback (most recent call last):   File "C:/Users/User/Desktop/CISC 300 - Dolce/Turn In/A3 Darryl Lardizabal pg121 #4 rework.py", line 86, in <module>
    main()   File "C:/Users/User/Desktop/CISC 300 - Dolce/Turn In/A3 Darryl Lardizabal pg121 #4 rework.py", line 81, in main
    yearly = totalYearly (totalMonthly)   File "C:/Users/User/Desktop/CISC 300 - Dolce/Turn In/A3 Darryl Lardizabal pg121 #4 rework.py", line 50, in totalYearly
    totalYearly = totalMonthly*ONE_YEAR TypeError: unsupported operand type(s) for *: 'function' and 'float'

我尝试过多种方式使用该行，包括totatYearly = totalMonthly * 12等等，但不确定它是否只是存在或代码可能有什么问题。

def totalYearly (totalMonthly):
    totalYearly = totalMonthly*ONE_YEAR
    return totalYearly

感谢您的帮助！

#-----------------------------------------------------------------------------------------
# Name:         Darryl Lardizabal
# Date:         2-20-2017
# Reference:    Chapter 3      page # 121   problem # 4
# Title:    Auto Costs
# Constants:    ONE_YEAR = 12.0
# Inputs:   Monthly Costs for Loan Payment, Insurance, Gas, Oil, Tires, Maintenance.
# ProcessA: Calculate sum for both monthly and annual costs of loan payment,
# ProcessB:     insurance, gas, oil, tires, and maintenance.
# Outputs:  Monthly Costs and Annual Costs 
#-----------------------------------------------------------------------------------------
#GLOBAL CONSTANTS
ONE_YEAR = 12.0

##The following modules gets the cost of monthly expenses and stores it in the getCost
#reference variable ----------------------------------------------------------------------
def getLP ():
    loanPayment = float(input("Please enter your monthly loan payment: "))
    return loanPayment

def getInsurance ():
    insurance = float(input("Please enter how much you spend on your insurance per month: "))
    return insurance

def getGas ():
    gas = float(input("Please enter how much you spend on gas per month: "))
    return gas

def getOil ():
    oil = float(input("Please enter how much you buy in oil per month: "))
    return oil

def getTires ():
    tires = float(input("Please enter how much you spend on tires each month: "))
    return tires

def getMaintenance ():
    maintenance = float(input("Please enter how much you spend on maintenance per month: "))
    return maintenance

##The totalMonthly module adds the cost of the monthly expenses and stores it in the
#totalMonthly reference variable ---------------------------------------------------------
def totalMonthly (loanPayment, insurance, gas, oil, tires, maintenance):
    totalMonthly = loanPayment + insurance + gas + oil + tires + maintenance
    return totalMonthly

##The totalYearly module adds the costs of the monthly expenses and multiples it by 12 and
#stores it in the totalYearly module reference variable ----------------------------------
def totalYearly (totalMonthly):
    totalYearly = totalMonthly*ONE_YEAR
    return totalYearly

##The showCosts module shows the total monthly and total yearly costs for the individual --
# -----------------------------------------------------------------------------------------
def showCosts (monthly, yearly):
    print ("---------------------------------------------------------")
    print ("Drum Roll Please...")
    print (".........................................................")
    print ("Your total monthly costs are: ", format(monthly,".2f"))
    print ("---------------------------------------------------------")
    print ("Your total yearly costs are: ", format(yearly,".2f"))
    print ("---------------------------------------------------------")
    return

##main module
def main():
    print ("-------------Starting Main-------------------------------")
    ## Get Monthly Costs from User
    loanPayment = getLP()
    insurance = getInsurance()
    gas = getGas()
    oil = getOil()
    tires = getTires ()
    maintenance = getMaintenance()


    ##Calculate Monthly Costs of User
    monthly = totalMonthly (loanPayment, insurance, gas, oil, tires, maintenance)

    ##Calculate Annual Costs of User
    yearly = totalYearly (totalMonthly)

    ##Show Costs to User for both per month and per year
    showCosts (totalMonthly, totalYearly)

main()

Answer 1

当您计算年度值并显示结果时，您将传递函数而不是结果作为参数。修复它，它会起作用：

##Calculate Monthly Costs of User
monthly = totalMonthly (loanPayment, insurance, gas, oil, tires, maintenance)

##Calculate Annual Costs of User
#yearly = totalYearly (totalMonthly)
yearly = totalYearly (monthly)

##Show Costs to User for both per month and per year
#showCosts (totalMonthly, totalYearly)
showCosts (monthly, yearly)

更新以下是现在正在发生的事情的简短示例以及上述修复方法：

>>> def totalMonthly(x):
...     return x + 1
... 
>>> def totalYearly(monthly):
...     return monthly * 12
... 
>>> m = totalMonthly(3)
>>> totalYearly(totalMonthly)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<stdin>", line 2, in totalYearly
TypeError: unsupported operand type(s) for *: 'function' and 'int'
>>> totalYearly(m)
48

目前正在获取一个TypeError，指出：*：'function'和'float'的不支持的操作数类型

1 个答案: