python - 当我运行我的函数 :- SyntaxError: unexpected EOF while parsing 时，我不断收到此错误

Question

我不知道为什么我在运行 addItem() 时收到一条错误消息:

SyntaxError: unexpected EOF while parsing

我关闭了对文件的所有读写操作，并且我正在使用 raw_input 函数。我认为我的 readfrom() 函数有问题，但我不知 Prop 体是什么。

import ast


def writeTo():

    itemx=",".join(map(str,itemx))
    with open("ListItemz.txt","a") as filewrite:
        filewrite.write(str(itemx)+"\n")
    filewrite.close()

def readfrom():

    fileread=open("ListItemz.txt","r")
    fr=fileread.readlines()
    fr=fr[len(fr)-1]
    itemx=list(ast.literal_eval(fr))
    fileread.close()

itemx=[]

def addItem():

    global itemx
    if  itemx==[]:
        itemx=[]
    else:
        """
        about to read file:
        """
    readfrom()
    dowhile="y"
    while dowhile =="y":
        item=raw_input("please enter item discription, or barcode No. ")
        if itemx!=[]:
            for y in itemx: 
                if item==y[0] or item==y[1]:
                    raise TypeError("This Item is already added")
        case=int(raw_input("Enter how much holds in one (1) case: "))
        caseNo=int(raw_input("how many cases are there?  "))
        for i in stockList():
            if item==i[1] or item==i[0]:
                itemx+=[[i[0],i[1],case,caseNo]]
                print "ITEM ADDED"
        dowhile=raw_input("Do you want to add another?(Y/N) ")
        """
        about to write itemx to a file:
        """
        writeTo()
    return itemx

Answer 1

我写入的文件 (ListItemz.txt) 很复杂，所以我只是删除了一些东西并重新开始。