python字典的存储问题

import aiohttp
import asyncio
import time
import multiprocessing as mp
import requests
from bs4 import BeautifulSoup
import socket

header = 'http://osu.ppy.sh/'
middle = 'p/pp/?'
mode = 'm=3'  # 0=stanard 1=taiko 2=ctb 3=mania
url = header + middle + mode + '&'
page = [1, 3]  # 开始页数-结束页数
badRequest = {}  # pageNum:resCode
htmls={}
#way store in mongoDB : collection: {"_id":"1", "Rank":"1","Player Name":"Jaka#ds","Accuracy":"97.59%","Play Count":""
#"Performance":"17288pp"}

def getPages(pageNum):  #每1秒获取一个页面当做缓存

    global url
    #global badRequest
    #global htmls
    try:
        print('开始get网页,pageNum=',pageNum)
        res = requests.get(url=url + str(pageNum), timeout=10)
        time.sleep(1)
        # 如果res不等于200 重试3次
        count = 0
        #print(res.status_code)
        while (res.status_code != 200 and count <= 3):
            res.status_code = requests.get(url=url + str(pageNum), timeout=10)
            print('restart get')
            count += 1
            if (res.status_code == 200):
                print('200 ok')
                htmls[str(pageNum)]=res.content
                break
        if(res.status_code==200):
            htmls[str(pageNum)]=res.content
            #print(res.content)
        else:
            badRequest[str(pageNum)]=res.status_code

        print( 'pageNum : ', pageNum, '返回码 : ', res.status_code)
        return res.status_code
    except Exception as e:
        print(e)
        return None

def findTags():
    print()

if __name__=='__main__':
    startTime = time.time()
    pool = mp.Pool()
    jobs=[pool.apply_async(getPages,args=(pageNum,))for pageNum in range(page[0],page[-1]+1)]
    results=[f.get() for f in jobs]
    print(htmls)
    print('花费时间 : ', time.time() - startTime, 's')
    print('ok')


``

代码如上，在if(res.status_code==200):
            htmls[str(pageNum)]=res.content 运行之后res.content没有正确的存储到htmls字典中， 测试可以print出res.content

求解答

难道字典有最大长度限制吗 但是我没搜出结果