To Allow or Block the notification, access using Selenium and you have to use ChromeOptions Class:
Below will help you
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
opt = Options()
opt.add_argument("--disable-infobars")
opt.add_argument("start-maximized")
opt.add_argument("--disable-extensions")
# Pass the argument 1 to allow and 2 to block
opt.add_experimental_option("prefs", { \
"profile.default_content_setting_values.media_stream_mic": 1,
"profile.default_content_setting_values.media_stream_camera": 1,
"profile.default_content_setting_values.geolocation": 1,
"profile.default_content_setting_values.notifications": 1
})
driver = webdriver.Chrome(chrome_options=opt, executable_path=r'C:\Utility\BrowserDrivers\chromedriver.exe')
driver.get('https://www.google.co.in')
print("Page Title is : %s" %driver.title)
driver.quit()