尝试将 object 添加到文本文件中

Question

I am trying to upload a bunch of objects onto a text file in an organized manner but I keep on getting an error. I am not sure about objects and how to arrange them so they appear in the text document.

class Customer: 
    def __init__(self, name, date, address, hkid, acc):
        self.name = name
        self.date = date
        self.address = address
        self.hkid = hkid
        self.acc = acc

customer1 = Customer ("Sarah Parker","1/1/2000","Hong Kong, Tai Koo,Tai Koo Shing Block 22,Floor 10, Flat 1", "X1343434","2222")
customer2 = Customer ("Joe Momo","7/11/2002","Hong Kong, Tai Koo, Tai Koo Shing, Block 22, Floor 10, Flat 5", "C2327934","1234")
customer3 = Customer ("Brent Gamez","7/20/2002","Hong Kong, Tung Chung, Yun Tung, Block 33, Floor 10, Flat 9", "C1357434","2234")
customer4 = Customer ("Jose Gamez","7/20/2002","Hong Kong, Tung Chung, Yun Tung, Block 33, Floor 10, Flat 9", "C1357434","2234")
customer5 =Customer ("Viraj Ghuman","7/20/2002","Hong Kong, Heng Fa Chuen, 100 Shing Tai Road, Block 22, Floor 20, Flat 1", "C6969689","100000")
allCustom = [customer1, customer2, customer3, customer4, customer5]

def UpdateFile ():
    global allCustom
    OutFile = open("CustomInfo.txt","w")
    for i in range (len(allCustom)):
        for c in range (i):
            OutFile.write(allCustom[i["\n","Name:",c.name,"\n"]])
            OutFile.write(allCustom[i["Birth Date:",c.date,"\n"]])
            OutFile.write(allCustom[i["Address:",c.address,"\n"]])
            OutFile.write(allCustom[i["HKID:",c.hkid,"\n"]])
            OutFile.write(allCustom[i["Account value:", c.acc,"\n"]])
    OutFile.close()

Answer 1

You don't need two loops to get each object info. Maybe this is what you are looking for.

def UpdateFile():
    global allCustom
    Outfile = open("CustomInfo.txt", "w")
    
    for i in allCustom:
        Outfile.write(f'\nName: {i.name}\n')
        ...

    Outfile.close()

Answer 2

i and c are integer list indexes. You can't use c.name because it's not a Customer object. And you can't index i[...] because it's not a container.

You don't need nested loops, just one loop over all the customers. Your loop iterates i from 0 to 4 . On the first iteration it iterates 0 times, on the second iteration it processes c == 0 , on the third iteration it processes c == 0 and c == 1 , and so on.

Then you can use a formatting operator to put the attributes into the strings that you're writing to the file (I've used f-strings below, but you can also use the % operator or the .format() method).

def updateFile():
    global allCustom;
    with open("CustomInfo.txt", "w") as OutFile:
        for c in allCustom:
            OutFile.write(f"\nName:{c.name}\n")
            OutFile.write(f"Birth Date:{c.date}\n")
            OutFile.write(f"Address:{c.address}\n")
            OutFile.write(f"HKID:{c.hkid}\n")
            OutFile.write(f"Account value:{c.acc}\n")