求解决python问题

自定义函数：open_file_to_list(fname)实现功能：将文件内容读入，返回列表变量list
自定义函数：write_list_to_file(fname)实现功能：将列表变量list，保存到文件中
自定义函数：find_people(name,fname)实现功能：在文件中查询某人是否存在
自定义函数：delete_people(name,fname)实现功能：在文件中删除某人数据
自定义main()函数：调用相关函数，实现功能：将60岁以上人员删除，将更新后数据写入"新文件.csv"

参考代码：

import csv
def open_file_to_list(fname):
    with open(fname,'r',encoding='utf-8') as f:
        data=f.readlines()
    return data

def write_list_to_file(fname1,data):
    with open(fname1,'w',encoding='utf-8') as f1:
        f1.writelines(data)
def find_people(name,data):
    for x in data:
        if name in x:
            print('yes')
            break
    else:
        print('no')
def delete_people(name,data):
    for x in data:
        if name==x.split(',')[0]:
            data.remove(x)
    return data
def main():
    fn='fp1.txt'
    d = open_file_to_list(fn)
    d1=d.copy()
    fn1='fp2.txt'
    write_list_to_file(fn1,d)
    find_people('abc',d)
    delete_people('abc',d)
    for b in d1:
        if int(b.split(',')[1])>60:
            d1.remove(b)
    writer=csv.writer(open('新文件.csv','w',encoding='utf-8',newline=''))
    items=[item.strip().split(',') for item in d1]
    writer.writerows(items)
main()