方便填写请求头，不用操作每个参数，这里介绍一个库 copyheaders
安装 pip install copyheaders
例子
import requests
from copyheaders import headers_raw_to_dict
r_h=b'''
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9
Cache-Control: no-cache
Connection: keep-alive
Cookie: BAIDUID=89CEA91EFA6933192A1ADA8096CAAE4F:FG=1; cflag=13%3A3; pgv_pvi=1338484736; BDUSS=pVRHpUMXJJWE1zRWNwTlpuSVR0dFlCV0M3N1p4OHdhUHlLR3NxOFY1QkNva05lSVFBQUFBJCQAAAAAAAAAAAEAAABU6WbpaWhhbmtsZW8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEIVHF5CFRxeeG; MCITY=-340%3A; BIDUPSID=89CEA91EFA6933192A1ADA8096CAAE4F; PSTM=1579079326; BD_HOME=1; H_PS_PSSID=1446_21090_26350; BD_UPN=12314753
Host: www.baidu.com
Pragma: no-cache
Sec-Fetch-Mode: navigate
Sec-Fetch-Site: none
Sec-Fetch-User: ?1
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.36
'''
headers = headers_raw_to_dict(r_h)
response=requests.get(''https://www.baidu.com/'',headers=headers).content.decode()
print(response)