驱动程序进入循环重复打开 chrome

Question

如何在获取数据时减少 selenium 运行 google chrome 的数量。准确地说，我有这段代码，其中迭代了 200 多次：

try:
    DRIVER_PATH = '/home/Selenium-drivers/chromedriver'
    driver = webdriver.Chrome(executable_path=DRIVER_PATH)
    driver.get(url_specific_wine)
    regions = driver.find_element(By.XPATH, '//*[@id="MainContent"]/div[2]/div[4]/div/div/div[5]/div[4]/div/div/div[9]/div[2]').text

except:
    regions = ''
    all_regions.append(regions)

每次都会打开一个google chrome。如何避免这种情况？

Answer 1

您当前的代码至少可以改进 2 点：
1.

DRIVER_PATH = '/home/Selenium-drivers/chromedriver'
driver = webdriver.Chrome(executable_path=DRIVER_PATH)

应该退出循环。
2.
您应该使用 Expected Conditions 显式等待，如下所示：

DRIVER_PATH = '/home/Selenium-drivers/chromedriver'
driver = webdriver.Chrome(executable_path=DRIVER_PATH)
wait = WebDriverWait(driver, 20)
try:
    driver.get(url_specific_wine)
    regions = wait.until(EC.visibility_of_element_located((By.XPATH, '//*[@id="MainContent"]/div[2]/div[4]/div/div/div[5]/div[4]/div/div/div[9]/div[2]'))).text
except:
    regions = ''
    all_regions.append(regions)

//*[@id="MainContent"]/div[2]/div[4]/div/div/div[5]/div[4]/div/div/div[9]/div[2] XPath 定位器似乎不可靠。我不知道你想定位什么元素，这里的定位器必须改进。
为了使用上面的 wait 对象，您将需要以下导入

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

驱动程序进入循环重复打开 chrome

Driver get within loop repeats opening chrome

selenium

xpath

selenium-chromedriver

selenium-webdriver