Selenium Python- How to handle NoSuchWindowException in Chrome

Question

I am trying to automate an application that downloads files automatically. I am using Selenium with Python. But my application crashes after some time throwing the Aw, Snap error and my script stops showing the error message:

NoSuchWindowException: no such window: target window already closed

So my ideas was to restart the application by including the except statement as shown:

except NoSuchWindowException as ex4:
    print("Exception4 has been thrown"+str(ex4))
    driver.refresh()
    driver.implicitly_wait(20)
    username=driver.find_element_by_id("user")
    username.clear()
    username.send_keys("")
    password=driver.find_element_by_id("pw")
    password.clear()
    password.send_keys("")
    driver.implicitly_wait(20)
    login=driver.find_element_by_id("loginButton")
    login.click()

I have tried the following in my except clause but didn't work :

driver.refresh()
Click on back button: driver.execute_script("window.history.go(-1)")
driver.get("URL")
driver.quit This worked but when I tried to relaunch the application using driver.get("URL") , I got the below error:

"error: [Errno 10061] No connection could be made because the target machine actively refused it"

Please suggest how I can resolve this issue. Below is the error image:

Thanks

IMO its a indentation error, you haven't handled the indentation in `except` block properly. — undetected Selenium, Aug 15 '17 at 15:47
quit will close the browser, so you will have to relaunch the browser and then do the get. — saurabh baid, Aug 15 '17 at 16:30
@DebanjanB: My actual code has correct indentation. I pasted the code wrong. — Vishnu, Aug 15 '17 at 17:03
@saurabhbaid : I did that but when I launch it again after quitting , I get an error ,explained in point 4. — Vishnu, Aug 15 '17 at 17:03
In your point 4 you are calling `get` which works on already opened session. you need to create new session like `WebDriver driver = new ChromeDriver();` — saurabh baid, Aug 15 '17 at 17:07

Selenium Python- How to handle NoSuchWindowException in Chrome

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