我下面的 Python Selenium 代碼下載了里約熱內盧的 shapefile。
import time, os
from selenium import webdriver
from webdriver_manager.chrome import ChromeDriverManager
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.ui import Select
options = webdriver.ChromeOptions()
preferences= {"download.default_directory": os.getcwd(), "directory_upgrade": True}
options.add_experimental_option("prefs", preferences)
#options.headless = True
options.add_experimental_option('excludeSwitches', ['enable-logging'])
url = "https://www.data.rio/datasets/limite-bairro/explore?location=-22.900784,-43.509500,10.83"
# Path of my WebDriver
driver = webdriver.Chrome(ChromeDriverManager().install(), options=options)
wait = WebDriverWait(driver, 10)
# to maximize the browser window
driver.maximize_window()
#get method to launch the URL
driver.get(url)
wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, "#ember104"))).click()
time.sleep(10)
driver.execute_script('document.querySelector("#ember50 > div > div > div:nth-child(1) > div.download-panel > div > div:nth-child(8) > hub-download-card").shadowRoot.querySelector("calcite-card > div > calcite-dropdown > calcite-button").click()')
time.sleep(10)
driver.execute_script('document.querySelector("#ember50 > div > div > div:nth-child(1) > div.download-panel > div > div:nth-child(8) > hub-download-card").shadowRoot.querySelector("calcite-card > div > calcite-dropdown > calcite-dropdown-group > calcite-dropdown-item:nth-child(1)").click()')
雖然它有效，但我想知道如何在預期條件的框架內使用這種語法——也就是說，不必告訴 Selenium 休眠十秒鐘，我將如何使用
wait.until()
使用 Javascript，所以我不需要明確設定等待 10 秒的時間——畢竟，如果不到 10 秒怎么辦？知道我該怎么做嗎？
uj5u.com熱心網友回復：
您可以將通過execute_script()回傳的 web 元素作為引數傳遞給 element_to_be_clickable() 的expected_conditions并呼叫點擊，如下所示：
wait = WebDriverWait(driver, 10)
wait.until(EC.element_to_be_clickable(driver.execute_script("return document.querySelector("#ember50 > div > div > div:nth-child(1) > div.download-panel > div > div:nth-child(8) > hub-download-card").shadowRoot.querySelector("calcite-card > div > calcite-dropdown > calcite-button")"))).click()
轉載請註明出處，本文鏈接：https://www.uj5u.com/gongcheng/450456.html
標籤：javascript 硒 硒网络驱动程序 网络驱动程序等待 预期条件
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