Selenium + python3 respond to the presence of more pop (alert_is_present) Analyzing process and

from selenium.webdriver.support import expected_conditions as EC 
from selenium.common.exceptions import UnexpectedAlertPresentException 

# Presence of a pop approach:

EC.alert_is_present () (driver) detecting the presence of pop

       try:

              WebDriverWait (driver, 10) .until ( EC.title_is (u " My Portal"))
         the except UnexpectedAlertPresentException: #alert process
              print ( "alert processing")
              the while EC.alert_is_present () (Driver): # loop detection, can cope An indefinite number of pop
                  Result = EC.alert_is_present () (Driver)
                  Print (result.text)
                  result.accept () 

              print ( 'login failed log on again')
              Login ()
         the except exceptions.TimeoutException: # 20,191,215
              Login () # login failed log on again 
         else: # by logging 
              print ( "log on")


# pop present processing method two:
            Print ( "alert processing")
            the try:
               for i in the Range (2): # can cope with the possible one or two pop
                   alert = driver.switch_to.alert
                   Print (alert.text)
                   alert.accept () # remove the browser warning
            NoAlertPresentException the except:
               Pass


# '' 'pop three processing method, the sample code
            the try:
                WebDriverWait (Driver, 10, 0.5) .until (EC.alert_is_present ())
                = driver.switch_to.alert Alert
                Print (alert.text)
                alert.accept () # remove the browser alerts
            the except exceptions.TimeoutException:
                Print ( "NO Alert")