Cause the dropdown HTML is:

<div class="select-items">
   <div>PHP</div>
   <div>Python</div>
   <div>Java</div>
   <div>C#</div>
</div>

So you can not use select.

Instead, use:

serv = Service(s)
driver = webdriver.Chrome(service=serv)
wait = WebDriverWait(driver, 30)
driver.maximize_window()
driver.get("https://pynishant.github.io/dropdown-selenium-python-select.html")

wait.until(EC.visibility_of_element_located((By.CSS_SELECTOR, "div.select-selected"))).click()
drop_down_list = wait.until(EC.presence_of_all_elements_located((By.CSS_SELECTOR, "div.select-items div")))

desired_option_to_select = 'PHP'
for option in drop_down_list:
    if option.text == desired_option_to_select:
        option.click()
        print('Clicked ', desired_option_to_select, 'option')
        break
    else:
        print('Could not click')

Imports:

from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC

You were close enough. However a few points:

Test Lang section

• It's not a SELECT tag so you can't use Select()

Solution

To select PHP from the dropdown you can use the following Locator Strategies:

Code Block:

driver.get("https://pynishant.github.io/dropdown-selenium-python-select.html")
WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//div[@class='select-selected']"))).click()
WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//div[@class='select-items']/div[text()='PHP']"))).click()

Note : You have to add the following imports :

from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC

Browser Snapshot:

Select your lang section

• The SELECT tag have the id attribute as lang but not lang1. So the effective line of code will be:

  lang = driver.find_element(By.ID, "lang")
  

• There is no option with value as 1 but php, c#, python and java

Solution

You can use the following Locator Strategies:

Code Block:

driver.get("https://pynishant.github.io/dropdown-selenium-python-select.html")
Select(WebDriverWait(driver, 20).until(EC.visibility_of_element_located((By.XPATH, "//select[@id='lang']")))).select_by_value("php")

Note : You have to add the following imports :

from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.ui import Select

Browser Snapshot: