查找匹配的 ''' 时出现意外的 EOF：这是什么意思？

问：

这些是我在运行add_user.py时从终端收到的错误消息

sh：-c：第 0 行：查找匹配的 ''' 时出现意外的 EOF

sh：-c：第 1 行：语法错误：文件意外结束

在网上阅读了一些后，我被引导相信这些错误是在我缺少匹配的括号或引号时抛出的？我已经多次查看了该文件，但由于已经过了几个小时，我可能只是直接查看错误。如果不是缺少引号或括号，请解释可能导致问题的原因，以便我修复它。感谢所有帮助过的人！

import csv
import os

filename = "/root/Downloads/linux_users.csv"

def create_username(aList):
    if (len(aList) < 2):
        print("INVALID RECORD")
    else:
        tokens = list(aList[2])
        username = tokens[0].lower() + aList[1].lower()
        return username

with open(filename) as f_handle:
    csv_reader = csv.reader(f_handle)
    next(csv_reader)
    userList = []
    groupList = []
    recordCopy = []
    rep = 0
    tick = True

    for record in csv_reader:
        if (record[7] == ""):
            record.remove(record[7])

        for data in record:
            if (data == ""):
                print("ERROR: MISSING INFORMATION. USER ID: " + record[0] + " HAS NOT BEEN ADDED")
                tick = False
        
        if ((record[6] not in groupList) and (tick == True)):
            groupList.append(record[6])

        if (tick == True):
            username = create_username(record)
            if (username in userList):
                username += str(rep)
                rep += 1
            userList.append(username)
            recordCopy.append(record)

        else:
            tick = True
    
    for group in groupList:
        os.system("groupadd " + group)
        print("GROUP: " + group + " HAS SUCCESSFULLY BEEN CREATED")
    
    i = 0
    for record in recordCopy:
        if (record[5] == "ceo"):
            os.system("adduser " + userList[i] + " -g " + record[6] +
            " -d /home/" + record[5] + " -s /bin/csh -u " + record[0] + " -p password")
            os.system("passwd -e " + userList[i])
        else:
            os.system("adduser " + userList[i]  + " -g " + record[6] +
            " -d /home/" + record[5] + " -s /bin/bash -u " + record[0] + " -p password")
            os.system("passwd -e " + userList[i])
        i += 1
        print("USER: " + record[0] + " HAS SUCCESSFULLY BEEN ADDED")