如何用python爬取同一页面翻页记录

import requests
import json
import random
import openpyxl
import time

def get_content(page):
    url = 'http://gs.amac.org.cn/amac-infodisc/api/pof/fund?rand={}&page={}&size=20'.format(random.random(),page)
    headers = {'Content-Type':'application/json',
              'usr-agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.42 Safari/537.36'}
    data = {}
    rsp = requests.post(url=url,headers=headers,data=json.dumps(data))
    json_str = json.loads(rsp.text)
    return json_str
json_str = get_content(0)
totalPages = json_str['totalPages']

xls = openpyxl.Workbook()
sheet = xls.active
title = ['基金名称','私募基金管理人名称','托管人名称','成立时间','备案时间']
sheet.append(title)

for page in range(0,totalPages+1):
    print("当前第{}页中".format(page+1))
    json_str = get_content(page)
    for item in json_str['content']:
        
        if item['establishDate'] == None:
            start_time = ''
        else:
            timeArray = time.localtime(item['establishDate']/1000)
            start_time = time.strftime("%Y-%m-%d",timeArray)
            
        if item['putOnRecordDate'] == None:
            start_time = ''
        else:
            timeArray = time.localtime(item['putOnRecordDate']/1000)
            end_time = time.strftime("%Y-%m-%d",timeArray)
        
        sheet.append([item['fundName'],item['managerName'],item["mandatorName"],start_time,end_time])
        time.sleep(1)

xls.save("zjzj.xlsx")
print("爬取完成")