import requests
import json

data = requests.get("https://jsonplaceholder.typicode.com/comments")
data = json.loads(data.text)

from bs4 import BeautifulSoup

request_data = requests.get("https://naver.com")

soup = BeautifulSoup(request_data.text,'html.parser')

result = soup.select('title')[0].text

result = soup.select("tag1 tag2").text

result = soup.select("tag1 > tag2").text

result = soup.select(".class1").text

result = soup.select("#id1").text

result = soup.select("tag1[href]").text

result = soup.select("tag1:nth-child(<num>)").text

result = soup.select_one('title').text

headers = {'User-Agent':'Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36'}
data = requests.get("https://jsonplaceholder.typicode.com/comments", headers=headers)

# 가장 원형의 드라이버를 가져온다
from selenium import webdriver
# 셀레니움 4에서 문법이 변경되면서 selector등을 사용할때 사용
from selenium.webdriver.common.by import By
# 키보드로 값을 넣을때 사용
from selenium.webdriver.common.keys import Keys
# 로딩중일때 어떠한 요소가 나올때까지 대기 가능하게 함
from selenium.webdriver.support.ui import WebDriverWait
# 로딩중일때 except문을 작성하기 위해 필요함
from selenium.webdriver.support import expected_conditions as EC

driver = webdriver.Chrome()

driver.get(<url>)

  <raw_source> = driver.page_source

  <element> = driver.find_element(By.CSS_SELECTOR, value=<css_selector>)

  <elements> = driver.find_elements(By.CSS_SELECTOR, value=<css_selector>)

  <element>.click()

driver.quit()

WebDriverWait(driver, <time>).until(EC.presence_of_element_located((By.CSS_SELECTOR, <css_selector>)))