Hey Kishor, Python Selenium webdriver provides following methods to handle pop-ups and alerts:
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alert_obj.accept() : This method is used to accept the Alert. 
 
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alert_obj.dismiss() – It is used to cancel the Alert.
 
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alert.send_keys() – This method allows you to enter a value in the Alert text box.
 
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alert.text() – It is used to retrieve the message included in the Alert pop-up.