from selenium import webdriver;
import time;




driver = webdriver.Safari();

driver.get("http://www.baidu.com");
time.sleep(2);



try:
    driver.find_element_by_id("lg").click();
    print("點擊成功");

except Exception as e:
    print(e);


finally:
    time.sleep(10);
    driver.quit();

第一次運行代碼，的確有點擊事件；第二次運行時，頁面沒有任何動作，打印“點擊成功”后休眠10s，關(guān)閉。

mac平臺下，safari，py3.6