Python Selenium is_displayed() returns true and ElementNotVisible exception is still raised?

Question

Before calling any of the element's send_keys(), I first check if it's enabled and visible so it doesn't raise an exception.

What happens is is_Displayed returns True and when I try to send_keys to that element it still raises an exception of ElementNotVisible. Is this some form of a bug?

It works on some websites, it doesn't work on another.

def login():
 elem = browser.find_elements_by_xpath('//input[contains(@name, "user")]')
 for elements in elem:
  if elements.is_displayed():
   if elements.is_enabled():
    elements.send_keys(username)
    elem = browser.find_elements_by_xpath('//input[contains(@name, "pass")]')
    for elements in elem:
     if elements.is_displayed():
       if elements.is_enabled():
        elements.clear()
        elements.send_keys(password + Keys.RETURN)   #Crashes here
        time.sleep(4)
        return

Answer 1

Try this:

def login():
 user_elements = browser.find_elements_by_xpath('//input[contains(@name, "user")]')
 for user in user_elements:
  if user.is_displayed():
   if user.is_enabled():
    user.send_keys(username)
    pass_elements = browser.find_elements_by_xpath('//input[contains(@name, "pass")]')
    for passw in pass_elements:
     if passw.is_displayed():
       if passw.is_enabled():
        passw.clear()
        passw.send_keys(password + Keys.RETURN)   #Crashes here
        time.sleep(4)
        return

It's likely your choice of variable names make you clobber the outside loop with the inside loop.

Answer 2

If anyone is still wondering what problem was, it was caused by javascript hiding element after page was fully loaded.

Completely disabling javascript on page solved that issue.