Python Selenium questions

Question

So i'm trying to make an email checker too see if the email I want his username I want is taken, or isn't, but I cannot figure out how to do it

def check():
    if driver.find_element_by_xpath("""//*[@id="MemberNameError"]"""):
        print(user_input + " is taken")
    else:
        print("Success")
check()

Answer 1

It depends.

If the element with id="MemberNameError" is only present in the DOM when there is a name error, you can try finding this element and handle the NoSuchElementException exception:

from selenium.common.exceptions import NoSuchElementException

def check():
    try:
        driver.find_element_by_xpath("""//*[@id="MemberNameError"]""")
        print(user_input + " is taken")
    except NoSuchElementException:
        print("Success")

If the element becomes visible/invisible depending whether there is an error or not, check the element's "displayedness" via is_displayed() method:

def check():
    error = driver.find_element_by_xpath("""//*[@id="MemberNameError"]""")
    if error.is_displayed():
        print(user_input + " is taken")
    else:
        print("Success")

---

As a side note, there is a simpler find_element_by_id() locator - you don't have to use the XPath expressions always:

driver.find_element_by_id("MemberNameError")