基础爬虫 不报错也不下数据

Question

import urllib.parse
import urllib.request

def requert_get(page):
    first_url='https://movie.douban.com/j/chart/top_list?type=5&interval_id=100%3A90&action=&'
    data={
        'start':(page-1)*20,  #根据上面规则start = （page-）*20. 所以我们需要实参page的值
        'limit':20
    }
    data=urllib.parse.urlencode(data)
    url= first_url+data
    headers = {
        'User-Agent': ' Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 Edg/103.0.1264.49'

    }
    requerst=urllib.request.Request(url=url,headers=headers)
    return requerst

def reqopne_get(requerst):
    content = urllib.request.urlopen(requerst)       #模拟浏览器像服务器发送请求
    contents=content.read().decode('utf-8')
    return contents       #返回contents的值


def plase_get(page,contents):
    with open('douban.'+str(page)+'json','w',encodings='utf-8') as fp:
        fp.write(contents)



if __name__ == '__main__':

    utf_name=int(input('请输入开始页码'))
    last_name=int(input('请输入结束页码'))
    for page in range(utf_name,last_name+1): #左闭又开想要获取10页数据 10+1 11获取第10页数据
        #请求对象定制
        requerst=requert_get(page)
        #获取响应的数据
        contents=reqopne_get(requerst)
        #下载数据
        plase_get=(page,contents)

Answer 1

帮你改好了

```python
import urllib.parse
import urllib.request


def requert_get(page):
    first_url = 'https://movie.douban.com/j/chart/top_list?type=5&interval_id=100%3A90&action=&'
    data = {
        'start': (page - 1) * 20,  # 根据上面规则start = （page-）*20. 所以我们需要实参page的值
        'limit': 20
    }
    data = urllib.parse.urlencode(data)
    url = first_url + data
    headers = {
        'User-Agent': ' Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 Edg/103.0.1264.49'

    }
    requerst = urllib.request.Request(url=url, headers=headers)
    return requerst


def reqopne_get(requerst):
    content = urllib.request.urlopen(requerst)  # 模拟浏览器像服务器发送请求
    contents = content.read().decode('utf-8')
    return contents  # 返回contents的值


def plase_get(page, contents):
    filename = 'douban.' + str(page) + 'json'
    with open(filename, 'w', encoding='utf-8') as fp:
        fp.write(contents)
    print('保存完成')


if __name__ == '__main__':

    utf_name = int(input('请输入开始页码'))
    last_name = int(input('请输入结束页码'))
    for page in range(utf_name, last_name + 1):  # 左闭又开想要获取10页数据 10+1 11获取第10页数据
        # 请求对象定制
        requerst = requert_get(page)
        # 获取响应的数据
        contents = reqopne_get(requerst)
        # 下载数据
        plase_get(page, contents)

```