Selenium Python不会关闭子窗口 [英] Selenium Python does not close the child window

问题描述

我有一个网页，单击该网页可打开新的浏览器窗口.我可以得到2个句柄，但是driver.close()总是关闭第一个/主窗口.

I have webpage which open new browser window on click. I am able to get 2 handles however driver.close() always closes the first/main window.

from selenium import webdriver
import time
driver = webdriver.Chrome() 
driver.get("file:///D:/blackhole/print.html")
han = driver.window_handles
print("handles:", han) # gets 1 handle
time.sleep(2)
click_btn = driver.find_element_by_link_text('Print')
click_btn.click()
han = driver.window_handles
print("handles:", han) # gets 2 handles
driver.switch_to_window = han[1] # first element is always first window handle
driver.close() # main window close

在调用新窗口的网页代码下方

Below webpage code which invokes new window

<a href="print.html"  
onclick="window.open('popprint.html', 
                    'newwindow', 
                    'width=300,height=250'); 
        return false;"
>Print</a>

与Firefox行为相同. Python 3.6.7

Same behaviour for Firefox as well. Python 3.6.7

推荐答案

硒无法关闭活动窗口，即新打开的窗口 >，因为实际上您没有干净地切换到新打开的窗口.

Selenium is unable to close the active window i.e the newly opened window because practically you havn't switched to the newly opened window in a clean way.

关于标签页/窗口切换/处理的几句话:

A few words about Tab/Window switching/handling:

• switch_to_window(window_name) 已被弃用一段时间，您需要使用 WebDriverWait 与 Tabs/Windows 之前，先在support.expected_conditions.html#selenium.webdriver.support.expected_conditions.number_of_windows_to_be"rel =" nofollow noreferrer> number_of_windows_to_be(num_windows) 上.
• 始终跟踪子窗口句柄，以便您可以在需要时遍历.
• 始终将 WebDriverWait 与expected_conditions一起用作 ，然后提取页面标题.

• 这是您自己的代码，上面有一些小的调整:

• switch_to_window(window_name) is deprecated for quite some time now and you need to use driver.switch_to.window
• Always keep track of the Parent Window handle so you can traverse back later if required as per your usecase.
• Always use WebDriverWait with expected_conditions as number_of_windows_to_be(num_windows) before switching between Tabs/Windows.
• Always keep track of the Child Window handles so you can traverse whenever required.
• Always use WebDriverWait with expected_conditions as title_contains("partial_page_title") before extracting the Page Title.

• Here is your own code with some minor tweaks mentioned above:

from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

driver = webdriver.Firefox(executable_path=r'C:\WebDrivers\geckodriver.exe')
driver.get("file:///D:/blackhole/print.html")
parent_han  = driver.window_handles
driver.find_element_by_link_text('Print').click()
WebDriverWait(driver, 10).until(EC.number_of_windows_to_be(2))
all_han = driver.window_handles
new_han = [x for x in all_han if x != parent_han][0]
driver.switch_to.window(new_han)
driver.close()

您可以在硒开关标签中找到详细的讨论

You can find a detailed discussion in Selenium Switch Tabs

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