请教一个问题我已经改变了url中的参数可是还是同样的内容打印了三遍

Question

import re

import requests

k = 0
while k <= 3:
    change = 0
    url = f"https://movie.douban.com/top250?start={change}"
    change = change + 25
    headers = {"user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) "
                             "Chrome/92.0.4515.107 Safari/537.36"}
    resp = requests.get(url=url, headers=headers)
    content = resp.text

    obj = re.compile(r'<li>.*?<div class="item">.*?<span class="title">(?P<name>.*?)</span>'
                     , re.S)
    result = obj.finditer(content)

    for i in result:
        print(i.group("name"))


    k = k + 1

Answer 1

你的change在每次循环的时候都被重置为0了
你弄个全局变量在外面初始化然后在while里面只修改不归零就可以了
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