python - 为什么我的代码在文件中多次重复

Question

您好，我在使用这段代码时遇到了麻烦。当它写入文件时，文件中的文本会重复自身。当代码循环并添加更多文本时，它会连接到插入的文本。我想知道你是否可以帮助我停止重复文本，但仍然写入新行。我希望第一个人的信息位于第一行，第二个人的信息位于第二行，依此类推，谢谢。

myFile1 = open("a-l.txt", "wt")

myFile2 = open("m-z.txt", "wt")


myList1 = ([])
myList2 = ([])

while 1: 
    surName = input("Enter your surname name:")
    if surName[0] in ("A","B","C","D","E","F","G","H","I","J","K","L"):
        myList1.append(surName)
        title = input("Enter your prefered title:")
        myList1.append(title)
        firstName = input("Enter your first name:")
        myList1.append(firstName)
        bDay = input("Enter birthdate in mm/dd/yyyy format:")
        myList1.append(bDay)
        phoneNum = input("Enter your phone number:")
        myList1.append(phoneNum)
        email = input("Please enter your email.")
        myList1.append(email)
        for item in myList1:
             myFile1.write(','.join(str(x) for x in myList1) + '\n')

    elif surName[0] in ("M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"):
        myList2.append(surName)
        title = input("Enter your prefered title:")
        myList2.append(title)
        firstName = input("Enter your first name:")
        myList2.append(firstName)
        bDay = input("Enter birthdate in mm/dd/yyyy format:")
        myList2.append(bDay)
        phoneNum = input("Enter your phone number:")
        myList2.append(phoneNum)
        email = input("Please enter your email:")
        myList2.append(email)
        for item in myList2:
             myFile2.write(','.join(str(x) for x in myList2) + '\n')
    elif surName == "1":
        break
myFile1.close()
myFile2.close()

Answer 1

这是因为您实际上使用了两个 for 循环。您正在使用列表理解将整个列表连接到一行并将其写入文件，但您执行了 X 次，其中 X 是列表中的项目数。

for item in myList1:
     myFile1.write(','.join(str(x) for x in myList1) + '\n')

您不需要外部 for 循环

myFile1.write(','.join(str(x) for x in myList1) + '\n')