Directly upload the code, the explanation is in the comments, if you don’t understand the comments, you must reply
# 项目名称：
# 项目简介：
# 作 者：key
# 开发时间：2020/10/24 19:22
from urllib.request import urlopen
from urllib.request import Request
from fake_useragent import UserAgent
from random import choice
url = "http://www.baidu.com"
# 获取请求头，在network中，或者fiddler中抓取
# 创建动态请求头，避免自己每次都手动切换user-agent
# 方法一，创建user-agent列表，拷贝一些不同浏览器的user-agent,然后用random.choice(user-agent)去随机获取
# useragent = [
# 'Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.67 Safari/537.36',
# 'Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36',
# 'Mozilla/5.0 (Windows ME 4.9; rv:31.0) Gecko/20100101 Firefox/31.7',
# 'Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0; chromeframe/13.0.782.215)'
# ]
# # print(choice(useragent))
# headers = {
# 'User-Agent':choice(useragent)
# }
# # 方法二，导入第三方包，fake-useragent,然后条用UserAgent类对象
# ua = UserAgent()
# # print(ua.chrome)
# # print(ua.ie)
headers = {
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) "
"Chrome/84.0.4147.89 Safari/537.36 "
}
# 包装成浏览器访问
request = Request(url, headers=headers)
#打印返回请求头
#这里有一个坑，就是在headers字典中，给User-Agent赋值的时候，底层会自动将User的首字母大写
#get_header返回请求头的时候，Agent首字母大写，将获取不到数据（我也不知道为什么，反正就是这样）
#print(request.get_header('User-agent')) # 返回Mozilla/5.0 ...... Chrome/84.0.4147.89 Safari/537.36
#print(request.get_header('User-Agent')) # 返回None
# 进行访问
response = urlopen(request)
#返回读取数据
info = response.read()
# 转化成unicode编码格式
print(info.decode())