【发布时间】：2021-05-19 17:43:39
【问题描述】：
我正在尝试使用 Selenium 进行网络抓取，并且我打开了一些选项卡以获取一些信息，但随后又想关闭它们。如果我不这样做，我会在代码完成运行时打开很多选项卡。我尝试切换到我想要关闭的选项卡，然后尝试通过执行以下操作将其关闭：
browser.switch_to.window(browser.window_handles[1])
browser.close()
当我运行程序时，尽管选项卡保持打开状态并且 URL 通常在哪里显示“about:blank”。有没有办法完全关闭此选项卡，同时保持所有其他选项卡打开？以下是完整代码供参考。
from selenium import webdriver
import os
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
import xlsxwriter
from datetime import datetime
import time
from selenium.common.exceptions import TimeoutException
trade_date_lim = "5/1/2021"
chrome_driver = os.path.abspath('C:/Users/ross/Desktop/chromedriver.exe')
browser = webdriver.Chrome(chrome_driver)
#makes workbook to write to
workbook = xlsxwriter.Workbook('reit_bonds_test.xlsx')
worksheet = workbook.add_worksheet()
stocks = ["PNW", "STWD"]
for stock in stocks:
browser.get('https://finra-markets.morningstar.com/BondCenter/Default.jsp')
wait = WebDriverWait(browser, 10)
#using clicks and send_keys, gets the bond page for a desired stock
wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR,
'#TabContainer > div > div.rtq-tab-wrap > div.rtq-tab-menus-wrap > ul > li:nth-child(3) > a > span'))).click()
wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, '#firscreener-cusip'))).send_keys(stock)
wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR,
"#ms-finra-advanced-search-form > div.ms-finra-advanced-search-btn > input:nth-child(2)"))).click()
try:
wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, "#ms-agreement > input"))).click()
except TimeoutException:
pass
#clicks to sort by earliest date, clicks again to sort by latest maturity
wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, "#ms-finra-search-results > div > div.qs-resultData > div.qs-resultData-body > div.rtq-grid.rtq-grid-auto-h > div.rtq-grid-hd > div > div:nth-child(7) > div"))).click()
time.sleep(5)
wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, "#ms-finra-search-results > div > div.qs-resultData > div.qs-resultData-body > div.rtq-grid.rtq-grid-auto-h > div.rtq-grid-hd > div > div:nth-child(7) > div"))).click()
time.sleep(5)
#gathers all bond offerings on first page
whole_chart = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, "#ms-finra-search-results > div > div.qs-resultData > div.qs-resultData-body > div.rtq-grid.rtq-grid-auto-h > div.rtq-scrollpanel > div.rtq-grid-scroll"))).text
#gets number of bonds listed on page so we can iterate through them. Some pages have differing number of bonds listed. Most on page is 20
parent = browser.find_element_by_xpath('//*[@id="ms-finra-search-results"]/div/div[3]/div[1]/div[1]/div[2]/div[2]/div')
count_divs = len(parent.find_elements_by_xpath("./div"))
bnd_off_cnt = 1
row_num = 0
while row_num < count_divs and bnd_off_cnt < 3:
#gets values that I'm looking for
symbol = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, "#ms-finra-search-results > div > div.qs-resultData > div.qs-resultData-body > div.rtq-grid.rtq-grid-auto-h > div.rtq-scrollpanel > div.rtq-grid-scroll > div > div:nth-child(" + str(row_num + 1) + ") > div:nth-child(3)"))).text
maturity = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, "#ms-finra-search-results > div > div.qs-resultData > div.qs-resultData-body > div.rtq-grid.rtq-grid-auto-h > div.rtq-scrollpanel > div.rtq-grid-scroll > div > div:nth-child(" + str(row_num + 1) + ") > div:nth-child(7)"))).text
moody_rating = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, "#ms-finra-search-results > div > div.qs-resultData > div.qs-resultData-body > div.rtq-grid.rtq-grid-auto-h > div.rtq-scrollpanel > div.rtq-grid-scroll > div > div:nth-child(" + str(row_num + 1) + ") > div:nth-child(8)"))).text
sandp_rating = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, "#ms-finra-search-results > div > div.qs-resultData > div.qs-resultData-body > div.rtq-grid.rtq-grid-auto-h > div.rtq-scrollpanel > div.rtq-grid-scroll > div > div:nth-child(" + str(row_num + 1) + ") > div:nth-child(9)"))).text
stated_bond_yield = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, "#ms-finra-search-results > div > div.qs-resultData > div.qs-resultData-body > div.rtq-grid.rtq-grid-auto-h > div.rtq-scrollpanel > div.rtq-grid-scroll > div > div:nth-child(" + str(row_num + 1) + ") > div:nth-child(11)"))).text
#looks to see if all values are non-empty and if moody rating and sandp rating are not equal to 'WR' and 'NR'
if symbol.strip() and maturity.strip() and moody_rating.strip() and sandp_rating.strip() and stated_bond_yield.strip() and moody_rating != "WR" and sandp_rating != "NR":
#bond detail page below
element = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, "#ms-finra-search-results > div > div.qs-resultData > div.qs-resultData-body > div.rtq-grid.rtq-grid-auto-h > div.rtq-scrollpanel > div.rtq-grid-scroll > div > div:nth-child(" + str(row_num + 1) + ") > div:nth-child(2) > div > a")))
element_link = element.get_attribute('href') #gets the link
#opens window, switches to it and opens the bond detail page
browser.execute_script("window.open('');")
time.sleep(3)
browser.switch_to.window(browser.window_handles[1])
browser.get(element_link)
#switch to iframe on second page and clicks it
wait.until(EC.frame_to_be_available_and_switch_to_it((By.ID, "ms-bond-detail-iframe")))
wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR,"#tradeHistory_link"))).click()
#switches to third page
browser.switch_to.window(browser.window_handles[-1])
#sleeps for 3 seconds so we know for sure that we are working on right page
time.sleep(3)
# get length of table on trades page and iterate through them trying to find the most recent "Trade" status
bond_trades = wait.until(EC.presence_of_all_elements_located((By.CSS_SELECTOR, "#ms-glossary > div > table > tbody > tr")))
count = len(bond_trades)
for trade in range(count):
bond_trade_status = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, "#ms-glossary > div > table > tbody > tr:nth-child(" + str(trade + 1) + ") > td:nth-child(4) > div"))).text
if bond_trade_status == "Trade":
bond_last_traded = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, "#ms-glossary > div > table > tbody > tr:nth-child(" + str(trade + 1) + ") > td:nth-child(1) > div"))).text
if bond_last_traded > trade_date_lim:
#prior bond yields occasionally don't match the yield that it was last traded at
bond_yield = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, "#ms-glossary > div > table > tbody > tr:nth-child(" + str(trade + 1) + ") > td:nth-child(7) > div"))).text
print(symbol, maturity, bond_yield)
bnd_off_cnt += 1
break
else:
continue
#test for if we are within X amount of time from today
#continue if we are more than that amount of time
#exit if we are within time frame and get 'Yield'
else:
continue
browser.switch_to.window(browser.window_handles[1])
browser.close()
browser.switch_to.window(browser.window_handles[0])
row_num += 1
感谢您的任何帮助！
罗斯
【问题讨论】：
-
您要关闭标签页或浏览器吗？
-
我只想在引用 browser.switch_to.window(browser.window_handles[1]) 时关闭我所在的选项卡。
标签： python selenium selenium-webdriver web-scraping selenium-chromedriver