Setting the Accepted-Lang header works fine with regular Chrome via ChromeOptions
options.add_experimental_option('prefs', {'intl.accept_languages': 'en,en_US'})
I'm trying to switch to new headless Chrome, but apparently this option has no effect when checking headers on validator.w3.org. Can I change them in another way? Anybody knows if support for this feature is coming?
Using Chrome 60, Chromedriver 2.30, Selenium 3.4.3, Python 3.6.1 on MacOS
Using this code:
from selenium import webdriver
print('Start')
options = webdriver.ChromeOptions()
options.add_argument('headless')
options.add_experimental_option('prefs', {'intl.accept_languages':'en,en_US'})
driver = webdriver.Chrome(chrome_options=options)
driver.get('http://validator.w3.org/i18n-checker/check?uri=google.com#validate-by-uri+')
print('Loaded')
# Check headers in output.html file. Search for 'Request headers'
html_source = driver.page_source
file = open('output.html', 'w')
file.write(html_source)
file.close
driver.implicitly_wait(5)
# Or check headers with select
# WARNING: This fails with 'headless' chrome option!
element = driver.find_element_by_xpath("//code[#class='headers_accept_language_0']").get_attribute('textContent')
print('Element:', element)
driver.close()
print('Finish')
Thanks!
That should be possible using the Chrome-developer-protocoll (cdp).
You can execute cdp commands using driver.execute_cdp_cmd().
Implemented it to Selenium-Profiles
Related
I knew and it is working fine also with headless mode on linux(python+selenium), for headless mode
chrome_options = webdriver.ChromeOptions()
chrome_options.add_argument('--headless')
chrome_options.add_argument('--no-sandbox')
browser = webdriver.Chrome(webdriver_manager.chrome.ChromeDriverManager().install(),
chrome_options=chrome_options)
My requirement: Want to run selenium/python script without headless chrome mode(i.e. non-headless)
But when i comment or remove line (--headless),
chrome_options = webdriver.ChromeOptions()
#chrome_options.add_argument('--headless')
chrome_options.add_argument('--no-sandbox')
browser = webdriver.Chrome(webdriver_manager.chrome.ChromeDriverManager().install(),
chrome_options=chrome_options)
or even (--no-headless)
chrome_options = webdriver.ChromeOptions()
chrome_options.add_argument('--no-sandbox')
browser = webdriver.Chrome(webdriver_manager.chrome.ChromeDriverManager().install(),
chrome_options=chrome_options)
it gave me error with above (non-headless) change while running python script,
Looking for [chromedriver 84.0.4147.30 linux64] driver in cache
File found in cache by path [/***/drivers/chromedriver/84.0.4147.30/linux64/chromedriver]
Error in UI Test: local variable 'browser' referenced before assignment
Can someone help me to achieve this requirement, if possible in linux?
If you aren't using --headless, ideally you should remove the following argument as well:
chrome_options.add_argument('--no-sandbox')
I would like to have Selenium run a headless instance of Google Chrome to mine data from certain websites without the UI overhead. I downloaded the ChromeDriver executable from here and copied it to my current scripting directory.
The driver appears to work fine with Selenium and is able to browse automatically, however I cannot seem to find the headless option. Most online examples of using Selenium with headless Chrome go something along the lines of:
import os
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.chrome.options import Options
chrome_options = Options()
chrome_options.add_argument("--headless")
chrome_options.binary_location = '/Applications/Google Chrome Canary.app/Contents/MacOS/Google Chrome Canary'`
driver = webdriver.Chrome(executable_path=os.path.abspath(“chromedriver"), chrome_options=chrome_options)
driver.get("http://www.duo.com")`
However when I inspect the possible arguments for the Selenium WebDriver using the command chromedriver -h this is what I get:
D:\Jobs\scripts>chromedriver -h
Usage: chromedriver [OPTIONS]
Options
--port=PORT port to listen on
--adb-port=PORT adb server port
--log-path=FILE write server log to file instead of stderr, increases log level to INFO
--log-level=LEVEL set log level: ALL, DEBUG, INFO, WARNING, SEVERE, OFF
--verbose log verbosely (equivalent to --log-level=ALL)
--silent log nothing (equivalent to --log-level=OFF)
--append-log append log file instead of rewriting
--replayable (experimental) log verbosely and don't truncate long strings so that the log can be replayed.
--version print the version number and exit
--url-base base URL path prefix for commands, e.g. wd/url
--whitelisted-ips comma-separated whitelist of remote IP addresses which are allowed to connect to ChromeDriver
No --headless option is available.
Does the ChromeDriver obtained from the link above allow for headless browsing?
--headless is not argument for chromedriver but for Chrome. --headless Run chrome in headless mode, i.e., without a UI or display server dependencies. ChromeDriver is a separate executable that WebDriver uses to control Chrome and Webdriver is a a collection of language specific bindings to drive a browser.
I am able to run in headless mode with this set of options. I hope this will help:
from bs4 import BeautifulSoup, NavigableString
from selenium.webdriver.chrome.options import Options
from selenium import webdriver
import requests
import re
options = Options()
options.add_argument('--headless')
options.add_argument('--no-sandbox')
options.add_argument('--disable-gpu')
browser = webdriver.Chrome(chrome_options=options) # see edit for recent code change.
browser.implicitly_wait(20)
Update 12 Aug 2019:
old : browser = webdriver.Chrome(chrome_options=options)
new : browser = webdriver.Chrome(options=options)
Try
options.headless=True
The following is how I set up my headless chrome
options = webdriver.ChromeOptions()
options.headless=True
options.add_argument('window-size=1920x1080')
prefs = {
"download.default_directory": r"C:\FilePath\Download",
"download.prompt_for_download": False,
"download.directory_upgrade": True}
options.add_experimental_option('prefs', prefs)
chromedriver = (r"C:\Filepath\chromedriver.exe")
--headless is not argument for chromedriver but Chrome, you can see more arguments or Command Line Switches for chrome here
I want to run headless Chrome but it keeps crashing with the following error:
[0814/155351.062:ERROR:gpu_process_transport_factory.cc(1016)] Lost UI shared context.
I have no idea what is going on here. My code is simple and works with the GUI.
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
options = Options()
options.add_argument('--headless') # Enable headless
options.add_argument('--disable-gpu') # Required as I am on Windows
driver = webdriver.Chrome(chromepath,chrome_options=options) #chromepath is a raw string to the driver
driver.get('https://en.wikipedia.org/wiki/Wiki')
driver.quit()
print('Successfully opened and closed headless Chrome')
All dependencies are current:
Chrome version: 68.0.3440.106(Official Build)(64-bit)
Selenium: 3.14.0
Chromedriver: 2.41
I'm trying to run a script via scheduler which uses selenium but it shows the following error - Message: Service /app/.apt/opt/google/chrome/chrome unexpectedly exited. Status code was: -6
I've used both the buildpacks -
https://github.com/heroku/heroku-buildpack-chromedriver.git
https://github.com/heroku/heroku-buildpack-xvfb-google-chrome
The script is:
chrome_exec_shim = "/app/.apt/opt/google/chrome/chrome"
opts = webdriver.ChromeOptions()
opts.binary_location = chrome_exec_shim
driver = webdriver.Chrome(executable_path=chrome_exec_shim, chrome_options=opts)
What you should do is download the Chrome driver here.
You can either put it in the chrome package that way you don't need to set the path at all. ( In my experience better to put in the path) or you can just give the path to the downloaded driver it can be in the project folder (recommend).
Just change the variable chrome_exec_shim to the path of the driver.
chrome_exec_shim = "/app/.apt/opt/google/chrome/chrome"
opts = webdriver.ChromeOptions()
opts.binary_location = chrome_exec_shim
opts.addArguments("--no-sandbox");
opts.addArguments("--disable-gpu");
driver = webdriver.Chrome(executable_path=chrome_exec_shim, chrome_options=opts)
Try with this code.
You must add the arguments of the chromeoption and it will work.
I tried this and its working for me.
After downloading the chromedriver, it was giving an error that binary was not found.
Gave the address of chrome in the executable path and the path of chrome driver in the chrome options.
That too resulted in the error, and after adding --disable-gpu and --no-sandbox arguments in the chrome options, it got resolved.
Thanks for the help... :)
The code that ran, at last, is below -
from selenium import webdriver
import os
chrome_exec_shim = os.environ.get("GOOGLE_CHROME_BIN", "chromedriver")
opts = webdriver.ChromeOptions()
opts.binary_location = chrome_exec_shim
opts.add_argument('--disable-gpu')
driver = webdriver.Chrome(executable_path='/app/development/chromedriver', chrome_options=opts)
I am running python script (complete script link below) for selenium test using Chrome Canary. The test seems to be running fine, however, there are lots of error/warning/info messages displayed on the console.
Is there a way to suppress these messages? I have tried:
chrome_options.add_argument("--silent"), but does not help. I am not able to find the right solution. Appreciate any help.
Python script : Example script provided here
Python: 3.6.3
Selenium: 3.6.0
Chrome Canary: 63.0.3239.5 (64 bit)
ChromeDriver : 2.33
Try options.add_argument('log-level=3').
log-level:
Sets the minimum log level.
Valid values are from 0 to 3:
INFO = 0,
WARNING = 1,
LOG_ERROR = 2,
LOG_FATAL = 3.
default is 0.
If "--log-level" doesn't work for you (as of 75.0.3770.100 it didn't for me), this should:
options = webdriver.ChromeOptions()
options.add_experimental_option('excludeSwitches', ['enable-logging'])
driver = webdriver.Chrome(executable_path='<path-to-chrome>', options=options)
See https://bugs.chromium.org/p/chromedriver/issues/detail?id=2907#c3
Code copied from Python selenium: DevTools listening on ws://127.0.0.1
Works for me in Python/Chrome...
from selenium.webdriver.chrome.options import Options
chrome_options = Options()
chrome_options.add_argument('--headless')
chrome_options.add_argument('--log-level=3')
You can take help of below link.
List of Chromium Command Line Switches
"--log-level" sets the minimum log level. Valid values are from 0 to 3: INFO = 0, WARNING = 1, LOG_ERROR = 2, LOG_FATAL = 3.
I have just tested this one, it works for me (C#):
ChromeOptions options = new ChromeOptions();
options.AddArguments("--headless", "--log-level=3");
RemoteWebDriver driver = new ChromeDriver(options);
import os
os.environ['WDM_LOG_LEVEL'] = '0'
That code hides the console output for from webdriver_manager.chrome import ChromeDriverManager console outputs