learn_selenium.py

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

driver = webdriver.Chrome()
driver.get("http://www.python.org")
assert "Python" in driver.title
elem = driver.find_element_by_name("q")  # 根据name查找元素
elem.send_keys("pycon")  # 输入内容
elem.send_keys(Keys.RETURN)  # 回车
print(driver.page_source)  # 返回浏览器渲染后页面

# 为页面添加Cookies
driver.get("http://www.python.org")
cookie = {'name': 'foo', 'value': 'bar'}
driver.add_cookie(cookie)
# 获取页面Cookies，用法如下
driver.get("http://www.python.org")
driver.get_cookies()

# 页面等待

# 显式等待
driver = webdriver.Chrome()
driver.get("http://somedomain/url_that_delays_loading")
try:
    element = WebDriverWait(driver, 10).until(
        EC.presence_of_element_located((By.ID, "myDynamicElement"))
    )
finally:
    driver.quit()

# 隐式等待
driver = webdriver.Chrome()
driver.implicitly_wait(10)  # seconds
driver.get("http://somedomain/url_that_delays_loading")
myDynamicElement = driver.find_element_by_id("myDynamicElement")