Python Selenium如何定位SmartyStreets网站下拉框与文本框并完成地址查询

• 目标页面的地址查询模块独立嵌套在iframe标签中，Selenium默认操作顶层DOM，未切换iframe的情况下无法定位iframe内部的元素

• 导入必要依赖：webdriver、WebDriverWait、expected_conditions、Select等
• 页面加载完成后先等待目标iframe加载，切换至对应iframe
• 定位下拉框元素，将其切换为freeform address选项
• 定位单行地址输入框，填入待查询地址
• 触发查询操作后等待结果加载完成，提取地址信息写入本地文本文件
• 操作完成后关闭驱动实例

from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.ui import Select

def get_property_info(address_to_search, output_file='address_result.txt'):
    # 可根据本地chromedriver路径修改Service参数
    service = Service('chromedriver')
    driver = webdriver.Chrome(service=service)
    # 最长等待时间可根据网络情况调整
    wait = WebDriverWait(driver, 15)
    
    try:
        url = 'https://www.smartystreets.com/products/single-address'
        driver.get(url)

        # 切换到查询模块对应的iframe
        iframe = wait.until(EC.presence_of_element_located((By.XPATH, '//iframe[contains(@src, "single-address")]')))
        driver.switch_to.frame(iframe)

        # 切换下拉框为freeform address模式
        select_elem = wait.until(EC.presence_of_element_located((By.ID, 'lookup-select')))
        Select(select_elem).select_by_value('freeform')

        # 填入待查询地址
        input_elem = wait.until(EC.element_to_be_clickable((By.ID, 'freeform-address')))
        input_elem.clear()
        input_elem.send_keys(address_to_search)

        # 触发查询
        submit_btn = wait.until(EC.element_to_be_clickable((By.ID, 'lookup-button')))
        submit_btn.click()

        # 提取结果写入文件
        result_area = wait.until(EC.presence_of_element_located((By.ID, 'lookup-result')))
        result_text = result_area.text
        with open(output_file, 'w', encoding='utf-8') as f:
            f.write(result_text)

        return result_text
    finally:
        driver.quit()

# 调用示例
if __name__ == '__main__':
    test_addr = "1600 Amphitheatre Parkway, Mountain View, CA"
    print(get_property_info(test_addr))

• 需保证Chrome浏览器版本和chromedriver版本完全匹配，否则会出现启动异常
• 若网络加载较慢，可适当调大WebDriverWait的超时时间
• 若后续网站更新修改了元素属性，可通过浏览器开发者工具重新定位对应元素的ID/XPATH即可

内容的提问来源于stack exchange，提问作者swp1