Why can't I click on a button in Selenium?

Question

Python

Here is my code:

from selenium import webdriver
from selenium.webdriver.common.keys import Keys

driver = webdriver.Firefox()
driver.get("https://www.instagram.com/accounts/login/")
# Ввод почты
mail = input('Почта:')
mail_input = driver.find_element_by_xpath("/html/body/div[1]/section/main/div/div/div[1]/div/form/div/div[1]/div/label/input")
mail_input.send_keys(mail)
# Ввод пароля
password = input('Пароль:')
password_input = driver.find_element_by_xpath("/html/body/div[1]/section/main/div/div/div[1]/div/form/div/div[2]/div/label/input")
password_input.send_keys(password)
# Клик по кнопке "Войти" UPD: Тут я остановился. Я начал другую версию, она находится в файле sys2.py
click_ = driver.find_element_by_css_selector(".L3NKy").click()
click_.click()

Answer:

Почта:[email protected]
Пароль:lalala
Traceback (most recent call last):
  File "F:\selenium_yandex_search\sys.py", line 17, in <module>
    click_.click()
AttributeError: 'NoneType' object has no attribute 'click'

Why does he say that this attribute does not exist? Is it written all over the Internet that this is how it should work?

Answer 1

And so, it is clearly seen that

click_ = driver.find_element_by_css_selector(".L3NKy").click()

At the end of this line there is click()
And what do we see on the next line:

click_.click()

The program reads this as something like

driver.find_element_by_css_selector(".L3NKy").click().click()