How to press button?

I’m pretty new with the selenium module in python and I’m not able to press a button. Here the HTML-Code:

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<a href="#">
    <img src="flag-en.png" title="English" alt="English"> English
</a>
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Here’s a minimal example:

import selenium.webdriver
import selenium.webdriver.chrome
import selenium.webdriver.chrome.options
import time

from webdriver_manager.chrome import ChromeDriverManager
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC

def get_driver():
    chrome_options = selenium.webdriver.chrome.options.Options()
    return selenium.webdriver.Chrome(service=Service(ChromeDriverManager().install()), options=chrome_options)

driver = get_driver()
driver.get(url)

# you can comment this out, if the first language which is selected isn't english
# otherwise this time is used to manually change the language to a non-english
# language to test, if it really selects the correct button
time.sleep(2)

WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//div[@class='btn-group lang-sel']"))).click()
WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//img[@title='English']"))).click()

what am I doing wrong?

Context

I want to automatically select the language of the website.

Answer

It seems to be your locator strategy is correct. You can shorten your xpath expression as follows:

pos= WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH,'//ul[@class="dropdown-menu"]/li[1]/a))).click()