How to use Python requests to fake a browser visit a.k.a and generate User Agent?

Try doing this, using firefox as fake user agent (moreover, it’s a good startup script for web scraping with the use of cookies):

#!/usr/bin/env python2
# -*- coding: utf8 -*-
# vim_ts=4:sw=4


import cookielib, urllib2, sys

def doIt(uri):
    cj = cookielib.CookieJar()
    opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
    page = opener.open(uri)
    page.addheaders = [('User-agent', 'Mozilla/5.0')]
    print page.read()

for i in sys.argv[1:]:
    doIt(i)

USAGE:

python script.py "http://www.ichangtou.com/#company:data_000008.html"

I used fake UserAgent.

How to use:

from fake_useragent import UserAgent
import requests
   

ua = UserAgent()
print(ua.chrome)
header = {'User-Agent':str(ua.chrome)}
print(header)
url = "https://www.hybrid-analysis.com/recent-submissions?filter=file&sort=^timestamp"
htmlContent = requests.get(url, headers=header)
print(htmlContent)

Output:

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1309.0 Safari/537.17
{'User-Agent': 'Mozilla/5.0 (X11; OpenBSD i386) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.125 Safari/537.36'}
<Response [200]>

The root of the answer is that the person asking the question needs to have a JavaScript interpreter to get what they are after. What I have found is I am able to get all of the information I wanted on a website in json before it was interpreted by JavaScript. This has saved me a ton of time in what would be parsing html hoping each webpage is in the same format.

So when you get a response from a website using requests really look at the html/text because you might find the javascripts JSON in the footer ready to be parsed.

I had a similar issue but I was unable to use the UserAgent class inside the fake_useragent module. I was running the code inside a docker container

import requests
import ujson
import random

response = requests.get('https://fake-useragent.herokuapp.com/browsers/0.1.11')
agents_dictionary = ujson.loads(response.text)
random_browser_number = str(random.randint(0, len(agents_dictionary['randomize'])))
random_browser = agents_dictionary['randomize'][random_browser_number]
user_agents_list = agents_dictionary['browsers'][random_browser]
user_agent = user_agents_list[random.randint(0, len(user_agents_list)-1)]

I targeted the endpoint used in the module. This solution still gave me a random user agent however there is the possibility that the data structure at the endpoint could change.

Answer

You need to create a header with a proper formatted User agent String, it server to communicate client-server.

You can check your own user agent Here.

Example

Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:47.0) Gecko/20100101 Firefox/47.0
Mozilla/5.0 (Macintosh; Intel Mac OS X x.y; rv:42.0) Gecko/20100101 Firefox/42.0

Third party Package user_agent 0.1.9

I found this module very simple to use, in one line of code it randomly generates a User agent string.

from user_agent import generate_user_agent, generate_navigator
from pprint import pprint

print(generate_user_agent())
# 'Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.3; Win64; x64)'

print(generate_user_agent(os=('mac', 'linux')))
# 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:36.0) Gecko/20100101 Firefox/36.0'

pprint(generate_navigator())

# {'app_code_name': 'Mozilla',
#  'app_name': 'Netscape',
#  'appversion': '5.0',
#  'name': 'firefox',
#  'os': 'linux',
#  'oscpu': 'Linux i686 on x86_64',
#  'platform': 'Linux i686 on x86_64',
#  'user_agent': 'Mozilla/5.0 (X11; Ubuntu; Linux i686 on x86_64; rv:41.0) Gecko/20100101 Firefox/41.0',
#  'version': '41.0'}

pprint(generate_navigator_js())

# {'appCodeName': 'Mozilla',
#  'appName': 'Netscape',
#  'appVersion': '38.0',
#  'platform': 'MacIntel',
#  'userAgent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:38.0) Gecko/20100101 Firefox/38.0'}

This is how, I have been using a random user agent from a list of nearlly 1000 fake user agents

from random_user_agent.user_agent import UserAgent
from random_user_agent.params import SoftwareName, OperatingSystem
software_names = [SoftwareName.ANDROID.value]
operating_systems = [OperatingSystem.WINDOWS.value, OperatingSystem.LINUX.value, OperatingSystem.MAC.value]   

user_agent_rotator = UserAgent(software_names=software_names, operating_systems=operating_systems, limit=1000)

# Get list of user agents.
user_agents = user_agent_rotator.get_user_agents()

user_agent_random = user_agent_rotator.get_random_user_agent()

Example

print(user_agent_random)

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36

For more details visit this link

I use pyuser_agent. this package use get user agnet

import pyuser_agent
import requests

ua = pyuser_agent.UA()

headers = {
      "User-Agent" : ua.random
}
print(headers)

uri = "https://github.com/THAVASIGTI/"
res = requests.request("GET",uri,headers=headers)
print(res)

console out

{'User-Agent': 'Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN) AppleWebKit/533+ (KHTML, like Gecko)'}
<Response [200]>

User agent is ok but he wants to fetch a JavaScript site.we can use selenium but it is annoying to setup and maintain so the best way to fetch a JavaScript rendered page is requests_html module. Which is a superset of the well known request module. To install use pip

pip install requests-html

And to fetch a JavaScript rendered page use

from requests_html import HTMLSession
session = HTMLSession()
r = session.get('https://python.org/')

Hope it will help. It uses puppter to render javascript and also it downloads chromium but you don’t have to worry everything is happening under the hood.you will get the end result.