小白用python编写的爬虫小程序突然失效，是ip被封还是其他问题，求教？

Question

编写的python小程序，爬取豆瓣评论，昨天还可以用，今天就失效了，试过很多种解决方法，都没有成功，求教？

可能的问题是ip被封或者cookies？

主程序

# -*- coding: utf-8 -*-
import ReviewCollection
from snownlp import SnowNLP
from matplotlib import pyplot as plt 
#画饼状图
def PlotPie(ratio, labels, colors):
    plt.figure(figsize=(6, 8))
    explode = (0.05,0)

    patches,l_text,p_text = plt.pie(ratio,explode=explode,labels=labels,colors=colors,
                            labeldistance=1.1,autopct='%3.1f%%',shadow=False,
                            startangle=90,pctdistance=0.6)

    plt.axis('equal')
    plt.legend()
    plt.show()

def main():
    #初始url
    url = 'https://movie.douban.com/subject/30176393/'
    #保存评论文件
    outfile = 'review.txt'
    (reviews, sentiment) = ReviewCollection.CollectReivew(url, 20, outfile)
    numOfRevs = len(sentiment)
    print(numOfRevs)

    #print(sentiment)
    positive = 0.0
    negative = 0.0
    accuracy = 0.0
    #利用snownlp逐条分析每个评论的情感
    for i in range(numOfRevs):
        # if sentiment[i] == 1:
            # positive += 1
        # else:
            # negative += 1
        print(reviews[i]+str(i))
        sent = SnowNLP(reviews[i])
        predict = sent.sentiments
        #print(predict,end=' ')
        if predict >= 0.5:
            positive += 1
            if sentiment[i] == 1:
                accuracy += 1
        else:
            negative += 1
            if sentiment[i] == 0:
                accuracy += 1
    #计算情感分析的精度
    print('情感预测精度为: ' + str(accuracy/numOfRevs))

    # print(positive,negative)
    #绘制饼状图
    #定义饼状图的标签
    labels = ['Positive Reviews', 'Negetive Reviews']
    #每个标签占的百分比
    ratio = [positive/numOfRevs, negative/numOfRevs]
    # print(ratio[0],ratio[1])
    colors = ['red','yellowgreen']
    PlotPie(ratio, labels, colors)

if __name__=="__main__":
    main()

次程序

#!/usr/bin/python  
# -*- coding: utf-8 -*-

from bs4 import BeautifulSoup
import requests
import csv
import re
import time
import codecs
import random
def StartoSentiment(star):
    '''
    将评分转换为情感标签，简单起见
    我们将大于或等于三星的评论当做正面评论
    小于三星的评论当做负面评论
    '''
    score = int(star[-2])
    if score >= 3:
        return 1
    else:
        return 0

def CollectReivew(root, n, outfile):
    '''
    收集给定电影url的前n条评论
    '''
    reviews = []
    sentiment = []
    urlnumber = 0
    headers = {'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.75 Safari/537.36','Connection': 'close','cookie': 'll="108303"; bid=DOSjemTnbi0; _pk_ses.100001.4cf6=*; ap_v=0,6.0; __utma=30149280.1517093765.1576143949.1576143949.1576143949.1; __utmb=30149280.0.10.1576143949; __utmc=30149280; __utmz=30149280.1576143949.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); __utma=223695111.1844590374.1576143949.1576143949.1576143949.1; __utmc=223695111; __utmz=223695111.1576143949.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); __utmt=1; __yadk_uid=iooXpNnGnHUza2r4ru7uRCpa3BXeHG0l; dbcl2="207917948:BFXaC6risAw"; ck=uFvj; _pk_id.100001.4cf6=4c11da64dc6451d3.1576143947.1.1576143971.1576143947.; __utmb=223695111.2.10.1576143949'}
    proxies = { "http":'http://121.69.46.177:9000',"https": 'https://122.136.212.132:53281'}#121.69.46.177:9000218.27.136.169:8085 122.136.212.132:53281
    while urlnumber < n:
        url = root + 'comments?start=' + str(urlnumber) + '&limit=20&sort=new_score&status=P'
        print('要收集的电影评论网页为：' + url)
        # try:
        html = requests.get(url, headers = headers, proxies = proxies,timeout = 15) #
        # except Exception as e:
            # break
        soup = BeautifulSoup(html.text.encode("utf-8"),'html.parser')

        #通过正则表达式匹配评论和评分
        for item in soup.find_all(name='span',attrs={'class':re.compile(r'^allstar')}): 
            sentiment.append(StartoSentiment(item['class'][0]))

        #for item in soup.find_all(name='p',attrs={'class':''}):
            # if str(item).find('class="pl"') < 0:
            # r = str(item.string).strip()
            # reviews.append(r)
        comments = soup.find_all('span','short')        
        for comment in comments:
            # print(comment.getText()+'\n')
            reviews.append(comment.getText()+'\n')      
        urlnumber = urlnumber + 20      
        time.sleep(5)

    with  codecs.open(outfile, 'w', 'utf-8') as output:
        for i in range(len(sentiment)):
            output.write(reviews[i] + '\t' + str(sentiment[i]) + '\n')
    return (reviews, sentiment)

不设置参数proxies时错误如下：

求教解决方法，感谢！！！！

Answer 1

ip被封了吧，试试ip池