Chromedriver only supports characters in the BMP error while sending Emoji with ChromeDriver Chrome using Selenium Python to Tkinter's label() textbox

This error message…

selenium.common.exceptions.WebDriverException: Message: unknown error: ChromeDriver only supports characters in the BMP

…implies that the ChromeDriver was unable to send the emoji signal through send_keys() method.

ChromeDriver only supports characters in the BMP is a known issue with Chromium team as ChromeDriver still doesn’t support characters with a Unicode after FFFF. Hence it is impossible to send any character beyond FFFF via ChromeDriver. As a result any attempt to send SMP characters (e.g. CJK, Emojis, Symbols, etc) raises the error.

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Alternative

A potential alternative would be to use GeckoDriver / Firefox.

• Code Block:

    from selenium import webdriver
    from selenium.webdriver.support.ui import WebDriverWait
    from selenium.webdriver.common.by import By
    from selenium.webdriver.support import expected_conditions as EC
  
    driver = webdriver.Firefox(executable_path=r'C:UtilityBrowserDriversgeckodriver.exe')
    driver.get('https://www.google.com/')
    # Chineese Character
    WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.NAME, "q"))).send_keys(" ")
    # Emoji Character
    WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.NAME, "q"))).send_keys(" ")
  

• Browser Snapshot:

You can find a relevant discussion in OpenQA.Selenium.WebDriverException: ‘unknown error: ChromeDriver only supports characters in the BMP while sending an emoji through C# Selenium

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Outro

A few links:

• Full Emoji List
• Unicode character inspector

For those who wants to send emojis on Chrome

Solution

    async sendKeysWithEmojis(element, text) {
        const script = `var elm = arguments[0],
        txt = arguments[1];elm.value += txt;
        elm.dispatchEvent(new Event('keydown', {bubbles: true}));
        elm.dispatchEvent(new Event('keypress', {bubbles: true}));
        elm.dispatchEvent(new Event('input', {bubbles: true}));
        elm.dispatchEvent(new Event('keyup', {bubbles: true}));`;
        await this.driver.executeScript(script, element, text);
    }

Call it like so

const element = await this.driver.findElement(selector);
await sendKeysWithEmojis(element, '  This one shall pass  ');

What is happening here?
We are emulating native key presses using events

Notice that the {bubbles: true} is optional (Was needed in my case due to a complex wrapped input)

Here is how I fixed this using VBA and ChromeDriver in Excel SeleniumBasic:

objIE.ExecuteScript "arguments[0].value = arguments[1]", Array(objIE.FindElementById("sqlvalue1"), Sheets("SheetName").Range("A1").Value)

This avoids using SendKeys which is what errors when it is run with this error message.

there was an open bug on chrome driver website, the bug as been fixed this month (14.11.21)

https://bugs.chromium.org/p/chromedriver/issues/detail?id=2269

this is the bug report.

how to use new chrome driver:

first go to:
https://commondatastorage.googleapis.com/chromium-browser-snapshots/index.html?prefix=Win/942085/

download the chrome driver from there.(the first mark as showen in image).

then you will need to install the new chrome v98 using the mini_installer.exe

(pay attantion its all expermintal),

without this you could not use the new driver due to version compitity.

next i needed to delete the current chrome version to make this work good.

your are all welcome to ask me question about it, i mange to make it work with the versions i add here on whatsapp using selenium chrome driver.

EDIT:

chrome versions 98 stable will come out in 30 days, so you could try to install the beta version and not the chromium version and see if it’s working.

you don’t have to delete the old chrome version, I know this thread is about python but in java (i guess python support it too) you could do this:

options.setBinary(System.getProperty("user.home") + "\AppData\Local\Chromium\Application\chrome.exe");

and it will set the path to the chromium version.

Copy & Paste it !!!
It was so easy to round on this issue by copying the text to the clipboard and then pasting it into the element.

import pyperclip
from selenium import webdriver
from selenium.webdriver import ActionChains
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys

driver = webdriver.Chrome()
driver.get("https://google.com")
title = driver.title
assert title == "Google"

driver.implicitly_wait(0.5)

search_box = driver.find_element(by=By.NAME, value="q")

pyperclip.copy("Hi   This is a test message !  ")
act = ActionChains(driver)
act.key_down(Keys.CONTROL).send_keys("v").key_up(Keys.CONTROL).perform()

You can use

js_code = """
  var elm = arguments[0], txt = arguments[1];
  elm.value += txt;
  elm.dispatchEvent(new Event('change'));
"""

your_text = 'this my text  '
element = driver.find_element_by_xpath('//*[@data-testid="input"]')
driver.execute_script(js_code, element, your_text)