Python发request请求

先准备request包

pip3 install requests

哦吼，pip太老了要先更新
问题不大更新他一手

python -m pip install --upgrade pip

搞定再来安装，这下成功了

验证一下

pip list

可以看到已安装了request包

先来个简单的请求

from urllib import request
url = r"http://www.baidu.com"
req = request.Request(url)  # 构造request请求
response = request.urlopen(req).read().decode()  # 获取response响应
print(response)

好的执行成功返回了一个html页面

再来个复杂的可以定义Header的请求

from urllib import request
import re
headers = {
    "User-Agent": "Mozilla/5.0"
}
url = r"http://www.baidu.com"
req = request.Request(url, headers=headers)  # 构造请求
response = request.urlopen(req).read().decode()  # 获取响应
pat = r"<title>(.*?)</title>"  # 正则匹配规则
data = re.findall(pat, response)  # 正则匹配筛选
print(data)

收工