from selenium import webdriver
chrome_path = r"C:\chromedriver_win32\chromedriver.exe"
# create new instance of chrome in incognito mode
browser = webdriver.Chrome(chrome_path)
# go to website of interest
browser.get("https://www.moneyweb.co.za/tools-and-data/click-a-company/SOL/")
# get the financial value
value_element = browser.find_elements_by_id('share-tradingdata-o')
values = [x.text for x in titles_element]
print(values)
上面的代码没有返回任何信息，而不是返回股价，这说明我在这里可能会缺少什么。我是这个网站的新手。请协助。
答案 0 :(得分：0)
您应该使用Wait等待该元素加载。
这是使用显式等待的解决方案：
gradle dependencies
此操作最多等待10秒，然后抛出const SomeDiv = styled.div`
background: blue;
`;
export default function App() {
const Div = ({ children, onClick }) => {
return <SomeDiv onClick={() => onClick("testing")}>{children}</SomeDiv>;
};
function test(val) {
console.log("I am");
console.log(val);
}
return (
<div className="App">
<SomeDiv onClick={() => console.log("Hello")}>
<span>Hello</span>
</SomeDiv>
<Div onClick={val => test(val)}>test</Div>
</div>
);
}
，除非它发现要在10秒内返回的元素值。默认情况下，from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
chrome_path = r"C:\chromedriver_win32\chromedriver.exe"
# create new instance of chrome in incognito mode
browser = webdriver.Chrome(chrome_path)
# go to website of interest
browser.get("https://www.moneyweb.co.za/tools-and-data/click-a-company/SOL/")
# wait for the element to load for 10 seconds
try:
# get the financial value when its populated to the page
value_element = WebDriverWait(driver, 10).until(
EC.text_to_be_present_in_element_value((By.ID, "share-tradingdata-o"))
)
print(value_element .text)
finally:
# after 10 seconds, maybe give up?
driver.quit()
每500毫秒调用一次TimeoutException，直到成功返回。
您可以根据情况不断增加等待时间。
有关等待的更多信息，请参阅Selenium Wait Docs
答案 1 :(得分：0)
等待带有文本的元素，请使用此xpath表达式//span[@id='share-tradingdata-o' and text()!='']，它将起作用。
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
chrome_path = r"C:\chromedriver_win32\chromedriver.exe"
# create new instance of chrome in incognito mode
browser = webdriver.Chrome(chrome_path)
browser.get("https://www.moneyweb.co.za/tools-and-data/click-a-company/SOL/")
wait = WebDriverWait(browser, 20)
value_element = wait.until(EC.presence_of_all_elements_located((By.XPATH, "//span[@id='share-tradingdata-o' and text()!='']")))
values = [x.text for x in value_element]
print(values)
browser.quit()