selenium.common.exceptions.NoSuchElementException：消息：无法找到元素：

问题描述

我正在尝试使用selenium在kahoot.it网页上自动生成大量用户，以使它们出现在类的前面，但是，在尝试访问inputSession项（在其中写入进入游戏的gameID）

I'm trying to automatically generate lots of users on the webpage kahoot.it using selenium to make them appear in front of the class, however, I get this error message when trying to access the inputSession item (where you write the gameID to enter the game)

from selenium import webdriver
from selenium.webdriver.common.keys import Keys

driver = webdriver.Firefox()
driver.get("http://www.kahoot.it")

gameID = driver.find_element_by_id("inputSession")
username = driver.find_element_by_id("username")

gameID.send_keys("53384")

这是错误：

selenium.common.exceptions.NoSuchElementException: Message: Unable to locate element:
{"method":"id","selector":"inputSession"}

任何帮助将不胜感激！ ：）

Any help would be much appreciated! :)

推荐答案

可能是竞标条件，在该条件下，find元素在页面上出现之前就在执行。看一下。这是来自文档的示例

Could be a race condition where the find element is executing before it is present on the page. Take a look at the wait timeout documentation. Here is an example from the docs

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

driver = webdriver.Firefox()
driver.get("http://somedomain/url_that_delays_loading")
try:
    element = WebDriverWait(driver, 10).until(
        EC.presence_of_element_located((By.ID, "myDynamicElement"))
    )
finally:
    driver.quit()

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