0 
from selenium import webdriver
import time
DRIVER = 'chromedriver'
driver = webdriver.Chrome(DRIVER)
driver.get("https://www.tradingview.com/#signin")
driver.find_element_by_name("username").send_keys("Username")
driver.find_element_by_name("password").send_keys("Password")
driver.find_element_by_xpath("//button[@type='submit']").click()
driver.maximize_window()
driver.find_element_by_link_text('Chart').click()
driver.find_element_by_class_name('input-3lfOzLDc').send_keys('SBIN')
time.sleep(20)
driver.quit()

这里一切正常，但是当我尝试找到需要更改的元素时（发送 SBIN 的元素，我收到此错误

Traceback (most recent call last):
  File "tview.py", line 11, in <module>
    driver.find_element_by_xpath("//input[@class='input-3lfOzLDc']").send_keys('SBIN')
  File "/usr/local/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py", line 394, in find_element_by_xpath
    return self.find_element(by=By.XPATH, value=xpath)
  File "/usr/local/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py", line 978, in find_element
    'value': value})['value']
  File "/usr/local/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "/usr/local/lib/python3.7/site-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"xpath","selector":"//input[@class='input-3lfOzLDc']"}

有人可以帮忙吗

4

2 回答 2

0

再等一会儿就可以了。我也导入了密钥，因为您必须清除该文本框

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
import time
DRIVER = 'chromedriver'
driver = webdriver.Chrome(DRIVER)
driver.get("https://www.tradingview.com/#signin")
driver.find_element_by_name("username").send_keys("sibyl666")
driver.find_element_by_name("password").send_keys("417305628m")
driver.find_element_by_xpath("//button[@type='submit']").click()
driver.maximize_window()
driver.find_element_by_link_text('Chart').click()
time.sleep(5)
driver.find_element_by_class_name('input-3lfOzLDc').send_keys(Keys.CONTROL + "a")
driver.find_element_by_class_name('input-3lfOzLDc').send_keys(Keys.DELETE);
driver.find_element_by_class_name('input-3lfOzLDc').send_keys('SBIN')
time.sleep(20)
driver.quit()
于 2020-06-15T17:45:56.120 回答
0

这可能为时已晚，但这对我有用。基本上，我使用 .clear() 来摆脱以前的值并增加一些等待时间（取决于网站在您的机器上加载的速度）。

ticker = driver.find_element_by_class_name('input-3lfOzLDc')
time.sleep(2)
ticker.clear()
time.sleep(2)
ticker.send_keys('SBIN')
time.sleep(2)
ticker.send_keys(Keys.RETURN)
于 2020-10-10T18:10:35.743 回答