You can use the find_element_by_css_selector method in Selenium to locate the <a> element by its class, and then use the get_attribute method to retrieve the href attribute.
Here is an example:
from selenium import webdriver
# create a new webdriver instance
driver = webdriver.Firefox()
# navigate to a website
driver.get("https://www.example.com")
# locate the <a> element by class
link = driver.find_element_by_css_selector(".classname")
# get the href attribute
href = link.get_attribute("href")
# print the href
print(href)
# close the browser
driver.quit()
You can replace .classname with the classname of your desired <a> tag and it will give you the href of that <a> tag.