Check out example codes for "make user agents rotate". It will help you in understanding the concepts better.

Code Example 1

import requests
import random 
from collections import OrderedDict

# This data was created by using the curl method explained above
headers_list = [
    # Firefox 77 Mac
     {
        "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:77.0) Gecko/20100101 Firefox/77.0",
        "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
        "Accept-Language": "en-US,en;q=0.5",
        "Referer": "https://www.google.com/",
        "DNT": "1",
        "Connection": "keep-alive",
        "Upgrade-Insecure-Requests": "1"
    },
    # Firefox 77 Windows
    {
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:77.0) Gecko/20100101 Firefox/77.0",
        "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
        "Accept-Language": "en-US,en;q=0.5",
        "Accept-Encoding": "gzip, deflate, br",
        "Referer": "https://www.google.com/",
        "DNT": "1",
        "Connection": "keep-alive",
        "Upgrade-Insecure-Requests": "1"
    },
    # Chrome 83 Mac
    {
        "Connection": "keep-alive",
        "DNT": "1",
        "Upgrade-Insecure-Requests": "1",
        "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.36",
        "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",
        "Sec-Fetch-Site": "none",
        "Sec-Fetch-Mode": "navigate",
        "Sec-Fetch-Dest": "document",
        "Referer": "https://www.google.com/",
        "Accept-Encoding": "gzip, deflate, br",
        "Accept-Language": "en-GB,en-US;q=0.9,en;q=0.8"
    },
    # Chrome 83 Windows 
    {
        "Connection": "keep-alive",
        "Upgrade-Insecure-Requests": "1",
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.36",
        "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",
        "Sec-Fetch-Site": "same-origin",
        "Sec-Fetch-Mode": "navigate",
        "Sec-Fetch-User": "?1",
        "Sec-Fetch-Dest": "document",
        "Referer": "https://www.google.com/",
        "Accept-Encoding": "gzip, deflate, br",
        "Accept-Language": "en-US,en;q=0.9"
    }
]
# Create ordered dict from Headers above
ordered_headers_list = []
for headers in headers_list:
    h = OrderedDict()
    for header,value in headers.items():
        h[header]=value
    ordered_headers_list.append(h)
    
    
url = 'https://httpbin.org/headers'

for i in range(1,4):
    #Pick a random browser headers
    headers = random.choice(headers_list)
    #Create a request session
    r = requests.Session()
    r.headers = headers
    
    response = r.get(url)
    print("Request #%d\nUser-Agent Sent:%s\n\nHeaders Recevied by HTTPBin:"%(i,headers['User-Agent']))
    print(response.json())
    print("-------------------")

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