Question

我仍然是超级新人。代码应该继续循环，直到/除非我输入而不输入值。它适用于2个循环，然后给出$currentDate = Get-Date $lastDay = [DateTime]::DaysInMonth($currentDate.Year, $currentDate.Month) $lastDayOfMonth = Get-Date ([DateTime]"$($currentDate.Month), $LastDay, $($currentDate.Year)") -Format 'dd/MM/yyyy' Write-Host $lastDayOfMonth错误。失意。请帮忙。我的代码：

NoneType

这是它的回报，通常是：

import random
hourly = 70
CustomerID = random.randint(100000,999999)
Customers = {}
characters = ['a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,A,B,C,D,E,F,G,H,I,J,K,L,,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z']

def generateRecord():
    cusName = input('Enter customer name:')
    cusIncome = int(input('Enter customer annual income:'))
    consulTime = int(input('Enter Consultation time in minutes:'))
    if cusIncome <= 25000:
                     CustRate = (.4)
                     print('Rate = 40% for time over 30 minutes')
    if cusIncome > 25000:
                     CustRate = (.7)
                     print('Rate = 70% for time over 20 minutes')
    if CustRate ==.4 and consulTime< 30:
        CustRate == 0
    if CustRate==.7 and consulTime <20:
        CustRate == 0

    billingAmt = hourly*CustRate*(consulTime/60)
    CustomerID
    print('Customer ID is '+str(CustomerID))
    Customers[CustomerID] = [cusName, cusIncome, consulTime, CustRate, billingAmt]

def generateBillAmount():
    cusIncome = int(input('Enter customer annual income:'))
    consulTime = int(input('Enter Consultation time in minutes:'))
    if cusIncome <= 25000:
        CustRate = .4
        print('Rate = 40% for time over 30 minutes')
    else:
        CustRate = .7
        print('Rate = 70% for time over 20 minutes')
    if CustRate ==.4 and consulTime< 30:
        CustRate = 0
    if CustRate==.7 and consulTime <20:
        CustRate = 0
    billingAmt = int(hourly*CustRate*(consulTime/60))
    if CustRate==.4 and consulTime>30:
        billingAmt = int(hourly*CustRate*((consulTime-30)/60))
    if CustRate==.7 and consulTime>20:
        billingAmt = int(hourly*CustRate*((consulTime-20)/60))
    print('Customer total is ' +str(billingAmt)+' dollars.')

generateRecord()
for cusName in generateRecord():
    for character in cusName:
        if cusName == '\n':
            print(Customers)
            break
        else:
            generateRecord()
generateBillAmount()

Answer 1

除非明确指定return值，否则python会返回None作为默认值。由于您正在循环generateRecord()的响应None;所以你得到一个错误。尝试定义函数的返回值

Answer 2

这是因为generateRecord()没有返回任何内容。因此，创建的任何内容都不会保存。所以默认情况下它将是None，无法迭代。将定义更改为以下

def generateRecord(Customers):

在该功能的末尾添加添加

return Customers

然后，这将更改函数范围之外的Customers字典...

继续收到非类型错误

2 个答案: