https://www.cnblogs.com/Ting-light/p/9770908.html
1.隐式等待，智能等待
driver.implicitly_wait(20)
2.启动
driver=webdriver.Chrome()
driver.get("https://www.baidu.com")
3.明确的等待50秒，而不抛出异常，直到指定元素出现
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.wait import WebDriverWait
WebDriverWait(browser, 50).until(EC.presence_of_element_located((By.ID, 'LoginForm_username')))
4.设定浏览器启动模式
mobileEmulation = {'deviceName': 'iPhone 6'}
options = webdriver.ChromeOptions()
options.add_experimental_option('mobileEmulation', mobileEmulation) #模拟手机UA启动
options.add_argument("start-maximized")
options.add_argument("--no-sandbox")
options.add_argument('--disable-gpu')
options.add_argument('window-size=1920x3000') #设置浏览器尺寸
# 创建驱动实例
driver = webdriver.Chrome(options=options)
# 设定浏览器坐标
driver.set_window_position(x=600, y=0)
5.执行JS
js = "$('.gapInput-keypad__math__keys').scrollTop(300)"
browser.execute_script(js)
6.设置浏览器弱网络
https://blog.csdn.net/qq_43577241/article/details/104475287
set_network_conditions(**network_conditions) 设置chrome网络竞争设置 ，network_conditions:dict类型，
例如 driver.set_network_conditions(offline=False,latency=5, #额外的延迟（毫秒）
download_throughput=500*1024,#最大吞吐量
upload_throughput=500*1024)#最大吞吐量
‘throughput’可以同时设置上传和下载的吞吐量
driver.set_network_conditions(offline=False,latency=1000,throughput=500 * 1024)