List of common switches :  
[/master/chrome/common/chrome_switches.cc](https://chromium.googlesource.com/chromium/src/+/master/chrome/common/chrome_switches.cc)

List of headless switches :  
[/master/headless/app/headless_shell_switches.cc](https://chromium.googlesource.com/chromium/src/+/master/headless/app/headless_shell_switches.cc)

To search other switches :  
https://source.chromium.org/search?q=file:switches.cc&amp;ss=chromium%2Fchromium%2Fsrc

List of preferences:  
[/master/chrome/common/pref_names.cc](https://chromium.googlesource.com/chromium/src/+/master/chrome/common/pref_names.cc)


This is the one I use:
http://peter.sh/experiments/chromium-command-line-switches/


    var options = new ChromeOptions();
    options.AddArgument(&quot;--start-maximized&quot;);
    options.AddArgument(&quot;--ignore-certificate-errors&quot;);
    options.AddArgument(&quot;--disable-popup-blocking&quot;);
    options.AddArgument(&quot;--incognito&quot;);

and so forth :) 


Here is an answer about how to use the ChromeOptions used:

    ChromeOptions options = new ChromeOptions();
    options.addArguments(&quot;test-type&quot;);
    options.addArguments(&quot;start-maximized&quot;);
    options.addArguments(&quot;--window-size=1920,1080&quot;);
    options.addArguments(&quot;--enable-precise-memory-info&quot;);
    options.addArguments(&quot;--disable-popup-blocking&quot;);
    options.addArguments(&quot;--disable-default-apps&quot;);
    options.addArguments(&quot;test-type=browser&quot;);

I believe this should be like this:

1. Try to eliminate the &quot;--&quot;
2. options &gt; option
3. Capitalize &quot;A&quot; in &quot;Add&quot; 
4. Arguments &gt; Argument

    ChromeOptions option = new ChromeOptions();

    option.AddArgument(&quot;test-type&quot;);

    option.AddArgument(&quot;start-maximized&quot;);

    option.AddArgument(&quot;window-size=1920,1080&quot;);

    option.AddArgument(&quot;enable-precise-memory-info&quot;);

    option.AddArgument(&quot;disable-popup-blocking&quot;);

    option.AddArgument(&quot;disable-default-apps&quot;);

    option.AddArgument(&quot;test-type=browser&quot;);

Unfortunately in the last versions of Chrome the negative network filter doesn&#39;t work anymore. I used this filter in order to exclude each http call containing a particular string. I asked a solution in Chrome dev tool forum but at the moment nobody answered.

So I would like to know if there is a way to resolve this problem (and exclude for example each call containing the string &#39;loadMess&#39;) with regex syntax.

Chrome dev tools: any way to exclude requests whose URL matches a regex?

I don&#39;t understand why this code generates TypeScript error.
(It&#39;s not the original code and is a bit derived, so please ignore the non-sense in the example):

&lt;!-- language: typescript --&gt;

    interface Images {
      [key:string]: string;
    }
    
    function getMainImageUrl(images: Images): string {
      return images.main;
    }

I&#39;m getting error (using TypeScript 1.7.5):

&gt; error TS2339: Property &#39;main&#39; does not exist on type &#39;Images&#39;.

Of course I could get rid of the error when writing:

    return images[&quot;main&quot;];

I&#39;d prefer not using string to access the property. What can I do?


error TS2339: Property &#39;x&#39; does not exist on type &#39;Y&#39;

I am a big advocate for reading the manual. But in this case, despite searching online for some time I cannot find a manual explaining all of the available `ChromeOptions` arguments. Somewhere there must be a listing of all of the string arguments and what they mean.

For example, here are some that I found by stumbling through examples:

    var options = new ChromeOptions();
    options.AddArgument(&quot;incognito&quot;);
    options.AddArguments(&quot;test-type&quot;);

Can someone please direct me to a listing? I am using C# 4.6, Selenium 2.45.



Where can I find a list of all available ChromeOption arguments?

I am a big advocate for reading the manual. But in this case, despite searching online for some time I cannot find a manual explaining all of the available <code>ChromeOptions</code> arguments. Somewhere there must be a listing of all of the string arguments and what they mean.
For example, here are some that I found by stumbling through examples:
<pre><code class="hljs language-ini">var options = new ChromeOptions();
options.AddArgument("incognito");
options.AddArguments("test-type");
</code></pre>
Can someone please direct me to a listing? I am using C# 4.6, Selenium 2.45.

&gt; .Net Core 1.0.0 - SDK Preview 2 (x64)
&gt;
&gt; .Net Core 1.0.0 - VS &quot;15&quot; Preview 2 (x64)
&gt;
&gt; .Net Core 1.0.0 - Runtime (x64)

So, we updated an RC1 app to the latest versions above. After many hours of switching references, it&#39;s running. However, when logging in (AccountController/Login), I am getting an error at:

    public class AccountController : BaseController
    {
        public UserManager&lt;ApplicationUser&gt; UserManager { get; private set; }
        public SignInManager&lt;ApplicationUser&gt; SignInManager { get; private set; }
        private readonly IEmailSender EmailSender;

        public AccountController(UserManager&lt;ApplicationUser&gt; userManager, SignInManager&lt;ApplicationUser&gt; signInManager, IEmailSender emailSender)
        {
            UserManager = userManager;
            SignInManager = signInManager;
            EmailSender = emailSender;
        }

        // GET: /Account/Login
        [HttpGet]
        [AllowAnonymous]
        public IActionResult Login(string returnUrl = null)
        {
            ViewBag.ReturnUrl = returnUrl;
            return View();
        }

        //
        // POST: /Account/Login
        [HttpPost]
        [AllowAnonymous]
        [ValidateAntiForgeryToken]
        public async Task&lt;IActionResult&gt; Login(ViewModels.Account.LoginViewModel model, string returnUrl = null)
        {
            if (ModelState.IsValid)
            {
                // Errs this next line
                var result = await SignInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, false); // &lt;-- ERRS HERE &#39;.PasswordSignInAsync&#39;
                if (result.Succeeded)
                    return RedirectToLocal(returnUrl);

                ModelState.AddModelError(&quot;&quot;, &quot;Invalid email or password.&quot;);
                return View(model);
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }
                
It blows up with the following error message:

&gt; InvalidOperationException: No database provider has been configured for this DbContext. A provider can be configured by overriding the DbContext.OnConfiguring method or by using AddDbContext on the application service provider. If AddDbContext is used, then also ensure that your DbContext type accepts a DbContextOptions&lt;TContext&gt; object in its constructor and passes it to the base constructor for DbContext.

Here is the Startup.cs:

    public void ConfigureServices(IServiceCollection services)
        {
            services.Configure&lt;AppSettings&gt;(Configuration.GetSection(&quot;AppSettings&quot;));

            // Add EF services to the services container.
            services.AddEntityFrameworkSqlServer()
               .AddDbContext&lt;LogManagerContext&gt;(options =&gt;
                  options.UseSqlServer(Configuration[&quot;Data:DefaultConnection:Connectionstring&quot;]));

            services.AddSingleton(c =&gt; Configuration);

            // Add Identity services to the services container.
            services.AddIdentity&lt;ApplicationUser, IdentityRole&gt;()
                .AddEntityFrameworkStores&lt;LogManagerContext&gt;()
                .AddDefaultTokenProviders();
                
            
            // Add MVC services to the services container.
            services.AddMvc();

            services.AddTransient&lt;IHttpContextAccessor, HttpContextAccessor&gt;();

            //Add all SignalR related services to IoC. - Signal R not ready yet - Chad
            //services.AddSignalR();

            //Add InMemoryCache
            services.AddMemoryCache();

            services.AddSession(options =&gt;
            {
                options.IdleTimeout = System.TimeSpan.FromHours(1);
                options.CookieName = &quot;.LogManager&quot;;
            });

            // Uncomment the following line to add Web API servcies which makes it easier to port Web API 2 controllers.
            // You need to add Microsoft.AspNet.Mvc.WebApiCompatShim package to project.json
            // services.AddWebApiConventions();
            // Register application services.
            services.AddTransient&lt;IEmailSender, AuthMessageSender&gt;();
            
        }

        // Configure is called after ConfigureServices is called.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            app.UseSession();

            // Configure the HTTP request pipeline.
            // Add the console logger.
            //loggerFactory.MinimumLevel = LogLevel.Information; - moved to appsettings.json -chad
            loggerFactory.AddConsole();
            loggerFactory.AddDebug();

            loggerFactory.AddNLog();

            // Add the following to the request pipeline only in development environment.
            if (env.IsDevelopment())
            {
                app.UseBrowserLink();
                app.UseDeveloperExceptionPage();
                //app.UseDatabaseErrorPage(DatabaseErrorPageOptions.ShowAll);
            }
            else
            {
                // Add Error handling middleware which catches all application specific errors and
                // sends the request to the following path or controller action.
                app.UseExceptionHandler(&quot;/Home/Error&quot;);
            }

            env.ConfigureNLog(&quot;NLog.config&quot;);

            // Add static files to the request pipeline.
            app.UseStaticFiles();

            // Add cookie-based authentication to the request pipeline.
            app.UseIdentity();

            //SignalR
            //app.UseSignalR();

            // Add MVC to the request pipeline.
            app.UseMvc(routes =&gt;
            {
                routes.MapRoute(
                 name: &quot;default&quot;,
                 template: &quot;{controller}/{action}/{id?}&quot;,
                 defaults: new { controller = &quot;Home&quot;, action = &quot;Index&quot; }
                 );

                // Uncomment the following line to add a route for porting Web API 2 controllers.
                // routes.MapWebApiRoute(&quot;DefaultApi&quot;, &quot;api/{controller}/{id?}&quot;);
            });
        }

And here&#39;s the Context:

    
    public class ApplicationUser : IdentityUser
    {
        // Add Custom Profile Fields
        public string Name { get; set; }
    }

    public class LogManagerContext : IdentityDbContext&lt;ApplicationUser&gt;
    {
        public DbSet&lt;LogEvent&gt; LogEvents { get; set; }
        public DbSet&lt;Client&gt; Clients { get; set; }
        public DbSet&lt;LogEventsHistory&gt; LogEventsHistory { get; set; }
        public DbSet&lt;LogEventsLineHistory&gt; LogEventsLineHistory { get; set; }
        public DbSet&lt;LogRallyHistory&gt; LogRallyHistory { get; set; }
        public DbSet&lt;Flag&gt; Flags { get; set; }
        protected override void OnModelCreating(ModelBuilder builder)
        {

            builder.Entity&lt;LogEvent&gt;().HasKey(x =&gt; x.LogId);
            builder.Entity&lt;LogEvent&gt;().ToTable(&quot;LogEvents&quot;);
            builder.Entity&lt;Client&gt;().HasKey(x =&gt; x.ClientId);
            builder.Entity&lt;Client&gt;().ToTable(&quot;Clients&quot;);
            builder.Entity&lt;LogEventsHistory&gt;().HasKey(x =&gt; x.HistoryId);
            builder.Entity&lt;Flag&gt;().HasKey(x =&gt; x.FlagId);
            builder.Entity&lt;Flag&gt;().ToTable(&quot;Flags&quot;);
            builder.Entity&lt;LogRallyHistory&gt;().HasKey(x =&gt; x.HistoryId);
            builder.Entity&lt;LogEventsLineHistory&gt;().HasKey(x =&gt; x.LineHistoryId);

            base.OnModelCreating(builder);
        }


&#39;No database provider has been configured for this DbContext&#39; on SignInManager.PasswordSignInAsync

I have a conflict when using System.IdentityModel.Tokens :

    using System;
    using System.Configuration;
    using System.Data;
    using System.Data.SqlClient;
    using System.IdentityModel.Tokens;
    using System.IdentityModel.Tokens.Jwt;
    using System.Text;

    public voidGenereToken()
    {
        const string sec = &quot;401b09eab3c013d4ca54922bb802bec8fd5318192b0a75f201d8b3727429090fb337591abd3e44453b954555b7a0812e1081c39b740293f765eae731f5a65ed1&quot;;
        var now = DateTime.UtcNow;
        var securityKey = new InMemorySymmetricSecurityKey(Encoding.Default.GetBytes(sec));
        var signingCredentials = new SigningCredentials(securityKey,
                SecurityAlgorithms.RsaSha256Signature, SecurityAlgorithms.Sha256Digest);

        var header = new JwtHeader(signingCredentials);

        var payload = new JwtPayload
        {
            {&quot;iss&quot;, &quot;a5fgde64-e84d-485a-be51-56e293d09a69&quot;},
            {&quot;scope&quot;, &quot;https://example.com/ws&quot;},
            {&quot;aud&quot;, &quot;https://example.com/oauth2/v1&quot;},
            {&quot;iat&quot;, now},
        };

        var secToken = new JwtSecurityToken(header, payload);

        var handler = new JwtSecurityTokenHandler();
        var tokenString = handler.WriteToken(secToken);
        Console.writeLine(tokenString)
    }

I get following error when I create header (*var header = new JwtHeader(signingCredentials);*) :

&gt; Argument type &#39;System.IdentityModel.Tokens.SigningCredentials&#39; is not
&gt; assignable to parameter type
&gt; &#39;Microsoft.IdentityModel.Tokens.SigningCredentials&#39;

I don&#39;t understand because all my type refers to *System.IdentityModel.Tokens*.
and in documentation [JwtHeader Constructor][1] need *System.IdentityModel.Tokens.SigningCredentials*

I don&#39;t know what&#39;s wrong ... 

  [1]: https://msdn.microsoft.com/en-us/library/dn451132(v=vs.114).aspx

Conflict between System.IdentityModel.Tokens and Microsoft.IdentityModel.Tokens

I don&#39;t understand how this library works. Could you help me please ?

Here is my simple code :

    public void TestJwtSecurityTokenHandler()
        {
            var stream =
                &quot;eyJhbGciOiJSUzI1NiJ9.eyJpc3MiOiJJU1MiLCJzY29wZSI6Imh0dHBzOi8vbGFyaW0uZG5zY2UuZG91YW5lL2NpZWxzZXJ2aWNlL3dzIiwiYXVkIjoiaHR0cHM6Ly9kb3VhbmUuZmluYW5jZXMuZ291di5mci9vYXV0aDIvdjEiLCJpYXQiOiJcL0RhdGUoMTQ2ODM2MjU5Mzc4NClcLyJ9&quot;;
            var handler = new JwtSecurityTokenHandler();

            var jsonToken = handler.ReadToken(stream);
        }

This is the error :
&gt; The string needs to be in compact JSON format, which is of the form: Base64UrlEncodedHeader.Base64UrlEndcodedPayload.OPTIONAL,Base64UrlEncodedSignature&#39;.

If you copy the stream in [jwt.io website][1], it works fine :)


  [1]: https://jwt.io/#libraries-io

How to decode JWT Token?

I am trying to create a user using claim identity asp.net 
I get this error while creating claims identity user.
    
      ApplicationUser user = new ApplicationUser { 
                            EmailConfirmed = true, 
                            UserName = model.myUser.Email,
                            Email = model.myUser.Email ,
                            PhoneNumber = model.myUser.PhoneNumber,
                            PhoneNumberConfirmed = true,
                            UserImagePath = model.myUser.UserImagePath,
                            FirstName= model.myUser.FirstName,
                            LastName = model.myUser.LastName,
                            DateOfBirth = model.myUser.DateOfBirth,
                            Culture = model.myUser.Culture,
                            Role = model.myUser.Role
                        };

but when the code was 

    var user= new ApplicationUser { 
                               
                                UserName = model.myUser.Email,
                                Email = model.myUser.Email ,
                           
                            };

it worked perfectly, so i want to know what is wrong

Embedded statement cannot be a declaration or labeled statement

I&#39;ve installed Visual Studio 15 Preview 3 and tried to use the new tuple feature

    static void Main(string[] args)
    {
        var x = DoSomething();
        Console.WriteLine(x.x);
    }

    static (int x, int y) DoSomething()
    {
        return (1, 2);
    }


When I compile I get the error:

&gt; Predefined type &#39;System.ValueTuple&#180;2&#180; is not defined or imported

According to [the blog post][1], this features should be &quot;on&quot; by default. 

What did I do wrong?


  [1]: https://blogs.msdn.microsoft.com/dotnet/2016/07/13/visual-studio-15-preview-3-for-c-and-visual-basic/

Predefined type &#39;System.ValueTuple&#180;2&#180; is not defined or imported

**Error message:** 

&gt; &#39;chromedriver&#39; executable needs to be in PATH

I was trying to code a script using selenium in pycharm, however the error above occured. [I have already linked my selenium to pycharm as seen here (fresh and up to date)][1].

I am new to selenium, isn&#39;t chromedriver in the folder &quot;selenium.&quot;
If it isn&#39;t, where can I find it and add it to the path?

By the way, I tried typing &quot;chromedriver&quot; in cmd, however, it wasn&#39;t recognized as an internal or external command.

error shown below:

    Traceback (most recent call last):
      File &quot;C:\Users\sebastian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\selenium\webdriver\common\service.py&quot;, line 64, in start
        stdout=self.log_file, stderr=self.log_file)
      File &quot;C:\Users\sebastian\AppData\Local\Programs\Python\Python35-32\lib\subprocess.py&quot;, line 947, in __init__
        restore_signals, start_new_session)
      File &quot;C:\Users\sebastian\AppData\Local\Programs\Python\Python35-32\lib\subprocess.py&quot;, line 1224, in _execute_child
        startupinfo)
    PermissionError: [WinError 5] Permission denied
    
    During handling of the above exception, another exception occurred:
    
    Traceback (most recent call last):
      File &quot;C:/Users/sebastian/PycharmProjects/web/bot.py&quot;, line 10, in &lt;module&gt;
        browser = webdriver.Chrome(&quot;C:/Users/sebastian/desktop/selenium-3.0.1&quot;)
      File &quot;C:\Users\sebastian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\selenium\webdriver\chrome\webdriver.py&quot;, line 62, in __init__
        self.service.start()
      File &quot;C:\Users\sebastian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\selenium\webdriver\common\service.py&quot;, line 76, in start
        os.path.basename(self.path), self.start_error_message)
    selenium.common.exceptions.WebDriverException: Message: &#39;selenium-3.0.1&#39; executable may have wrong permissions. Please see https://sites.google.com/a/chromium.org/chromedriver/home
    
    Exception ignored in: &lt;bound method Service.__del__ of &lt;selenium.webdriver.chrome.service.Service object at 0x01EDEAF0&gt;&gt;
    Traceback (most recent call last):
      File &quot;C:\Users\sebastian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\selenium\webdriver\common\service.py&quot;, line 163, in __del__
        self.stop()
      File &quot;C:\Users\sebastian\AppData\Local\Programs\Python\Python35-32\lib\site-packages\selenium\webdriver\common\service.py&quot;, line 135, in stop
        if self.process is None:
    AttributeError: &#39;Service&#39; object has no attribute &#39;process&#39;


  [1]: https://gyazo.com/b5622e3165bbfd93cfa205178df79b6f

selenium - chromedriver executable needs to be in PATH

After trying out various approaches... I have stumbled upon this page to take full-page screenshot with chromedriver, selenium and python.

The original code is [here][1]. (and I copy the code in this posting below)

It uses PIL and it works great! However, there is one issue... which is it captures fixed headers and repeats for the whole page and also misses some parts of the page during page change. sample url to take a screenshot: 

http://www.w3schools.com/js/default.asp


**How to avoid the repeated headers with this code... Or is there any better option which uses python only...** **( i don&#39;t know java and do not want to use java).**

Please see the screenshot of the current result and sample code below.

[![full page screenshot with repeated headers][2]][2]


**test.py**

    &quot;&quot;&quot;
    This script uses a simplified version of the one here:
    https://snipt.net/restrada/python-selenium-workaround-for-full-page-screenshot-using-chromedriver-2x/
    
    It contains the *crucial* correction added in the comments by Jason Coutu.
    &quot;&quot;&quot;
    
    import sys
    
    from selenium import webdriver
    import unittest
    
    import util
    
    class Test(unittest.TestCase):
        &quot;&quot;&quot; Demonstration: Get Chrome to generate fullscreen screenshot &quot;&quot;&quot;
    
        def setUp(self):
            self.driver = webdriver.Chrome()
    
        def tearDown(self):
            self.driver.quit()
    
        def test_fullpage_screenshot(self):
            &#39;&#39;&#39; Generate document-height screenshot &#39;&#39;&#39;
            #url = &quot;http://effbot.org/imagingbook/introduction.htm&quot;
            url = &quot;http://www.w3schools.com/js/default.asp&quot;
            self.driver.get(url)
            util.fullpage_screenshot(self.driver, &quot;test.png&quot;)
    
    
    if __name__ == &quot;__main__&quot;:
        unittest.main(argv=[sys.argv[0]])


**util.py**

    import os
    import time
    
    from PIL import Image
    
    def fullpage_screenshot(driver, file):
    
            print(&quot;Starting chrome full page screenshot workaround ...&quot;)
    
            total_width = driver.execute_script(&quot;return document.body.offsetWidth&quot;)
            total_height = driver.execute_script(&quot;return document.body.parentNode.scrollHeight&quot;)
            viewport_width = driver.execute_script(&quot;return document.body.clientWidth&quot;)
            viewport_height = driver.execute_script(&quot;return window.innerHeight&quot;)
            print(&quot;Total: ({0}, {1}), Viewport: ({2},{3})&quot;.format(total_width, total_height,viewport_width,viewport_height))
            rectangles = []
    
            i = 0
            while i &lt; total_height:
                ii = 0
                top_height = i + viewport_height
    
                if top_height &gt; total_height:
                    top_height = total_height
    
                while ii &lt; total_width:
                    top_width = ii + viewport_width
    
                    if top_width &gt; total_width:
                        top_width = total_width
    
                    print(&quot;Appending rectangle ({0},{1},{2},{3})&quot;.format(ii, i, top_width, top_height))
                    rectangles.append((ii, i, top_width,top_height))
    
                    ii = ii + viewport_width
    
                i = i + viewport_height
    
            stitched_image = Image.new(&#39;RGB&#39;, (total_width, total_height))
            previous = None
            part = 0
    
            for rectangle in rectangles:
                if not previous is None:
                    driver.execute_script(&quot;window.scrollTo({0}, {1})&quot;.format(rectangle[0], rectangle[1]))
                    print(&quot;Scrolled To ({0},{1})&quot;.format(rectangle[0], rectangle[1]))
                    time.sleep(0.2)
    
                file_name = &quot;part_{0}.png&quot;.format(part)
                print(&quot;Capturing {0} ...&quot;.format(file_name))
    
                driver.get_screenshot_as_file(file_name)
                screenshot = Image.open(file_name)
    
                if rectangle[1] + viewport_height &gt; total_height:
                    offset = (rectangle[0], total_height - viewport_height)
                else:
                    offset = (rectangle[0], rectangle[1])
    
                print(&quot;Adding to stitched image with offset ({0}, {1})&quot;.format(offset[0],offset[1]))
                stitched_image.paste(screenshot, offset)
    
                del screenshot
                os.remove(file_name)
                part = part + 1
                previous = rectangle
    
            stitched_image.save(file)
            print(&quot;Finishing chrome full page screenshot workaround...&quot;)
            return True


  [1]: http://seleniumpythonqa.blogspot.com/2015/08/generate-full-page-screenshot-in-chrome.html
  [2]: https://i.stack.imgur.com/PSutD.jpg

Take screenshot of full page with Selenium Python with chromedriver

I&#39;m beginning the automate the boring stuff book and I&#39;m trying to open a chrome web browser through python. I have already installed selenium and

 I have tried to run this file:

    from selenium import webdriver
    from selenium.webdriver.common.by import By
    from selenium.webdriver.common.keys import Keys
    
    browser = webdriver.Chrome()
    browser.get(&#39;https://automatetheboringstuff.com&#39;)

But because of that I get this Error:

&gt; 

    Traceback (most recent call last):   File &quot;C:\Program Files
       (x86)\Python36-32\lib\site-packages\selenium\webdriver\common\service.py&quot;,
     line 74, in start
         stdout=self.log_file, stderr=self.log_file)   File &quot;C:\Program Files (x86)\Python36-32\lib\subprocess.py&quot;, line 707, in __init__
         restore_signals, start_new_session)   File &quot;C:\Program Files (x86)\Python36-32\lib\subprocess.py&quot;, line 990, in _execute_child
         startupinfo) FileNotFoundError: [WinError 2] The system cannot find the file specified

 
During handling of the above exception, another exception occurred:

    Traceback (most recent call last):   File &quot;C:/Program Files
    (x86)/Python36-32/test.py&quot;, line 5, in &lt;module&gt;
        browser = webdriver.Chrome()   File &quot;C:\Program Files (x86)\Python36-32\lib\site-packages\selenium\webdriver\chrome\webdriver.py&quot;,
    line 62, in __init__
       self.service.start()   File &quot;C:\Program Files (x86)\Python36-32\lib\site-packages\selenium\webdriver\common\service.py&quot;,
    line 81, in start
       os.path.basename(self.path), self.start_error_message) selenium.common.exceptions.WebDriverException: Message: &#39;chromedriver&#39;
      executable needs to be in PATH. Please see
    https://sites.google.com/a/chromium.org/chromedriver/home



Python Selenium Chrome Webdriver

I&#39;m working on a python script to web-scrape and have gone down the path of using Chromedriver as one of the packages. I would like this to operate in the background without any pop-up windows. I&#39;m using the option &#39;headless&#39; on chromedriver and it seems to do the job in terms of not showing the browser window, however, I still see the .exe file running. See the screenshot of what I&#39;m talking about. [Screenshot][1]

This is the code I am using to initiate ChromeDriver:

    options = webdriver.ChromeOptions()
    options.add_experimental_option(&quot;excludeSwitches&quot;,[&quot;ignore-certificate-errors&quot;])
    options.add_argument(&#39;headless&#39;)
    options.add_argument(&#39;window-size=0x0&#39;)
    chrome_driver_path = &quot;C:\Python27\Scripts\chromedriver.exe&quot;

Things I&#39;ve tried to do is alter the window size in the options to 0x0 but I&#39;m not sure that did anything as the .exe file still popped up.

Any ideas of how I can do this?

I am using Python 2.7 FYI

  [1]: https://i.stack.imgur.com/unkR3.jpg

How to configure ChromeDriver to initiate Chrome browser in Headless mode through Selenium?

After Chrome released their newest version yesterday (64.0.3282), I am now receiving this error rather sporadically:

&gt; Timed out receiving message from renderer: 600.000

I&#39;m running about 2,000 selenium tests within a docker container and I see this failure at a rate of about 1 in 100. There are no reproducible steps as far as I can tell- the tests that fail are different with each iteration. I updated to the newest Chromedriver (2.35), but that didn&#39;t seem to have any effect. I was previously using Selenium 2.41, but have updated to the newest version (3.8.1) hoping that it might help... it did not. I&#39;m completely at a loss as to why this might be occurring. Has anyone else noticed this? Is it possibly a bug with Chrome&#39;s newest release?

Thank you in advance for any help you may be able to provide.

Content Type	Original Author	Original Content on Stackoverflow
Question	sapbucket	View Question on Stackoverflow
Solution 1 - C#	Florent B.	View Answer on Stackoverflow
Solution 2 - C#	Moe Ghafari	View Answer on Stackoverflow
Solution 3 - C#	Marcela	View Answer on Stackoverflow
Solution 4 - C#	Donna Esperas	View Answer on Stackoverflow

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C# Problem Overview

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