從 gif 直觀地感受一下效果
我有大量 url 需要訪問，但是有些 url 會超時
為了避免超時，設定driver.set_page_load_timeout(3)限時3秒，一旦超時就會產生 timeoutexception
而且超時後標籤頁就卡柱了，只能通過driver.close()關閉
如果你只有乙個標籤頁，關閉就直接退出了，還得重啟
自然想到先保留乙個備用的標籤，原標籤超時需要關閉的時候就切換過來，然後再關閉，並開啟新標籤，保證任何時候都有兩個標籤頁可用！！
def
visit
(urls, timeout=3)
: driver.implicitly_wait(timeout)
# 操作、獲取元素時的隱式等待時間
driver.set_page_load_timeout(timeout)
# 頁面載入超時等待時間
main_win = driver.current_window_handle
for url in urls:
all_win = driver.window_handles
try:if
len(all_win)==1
: driver.execute_script(
'window.open();'
) driver.get(url)
# 頁面處理
pass
except exception:
for win in all_win:
if main_win != win:
driver.close(
)# 關閉卡住的標籤
driver.switch_to.window(win)
# 切換到備用標籤
main_win = win # 切換到備用標籤
break
from selenium import webdriver
from selenium.webdriver.common.by import by
from selenium.webdriver.common.keys import keys
from selenium.webdriver.support import expected_conditions as ec
from selenium.webdriver.support.wait import webdriverwait
from selenium.webdriver.chrome.options import options
import time
import requests
import zipfile
import os
defun_zip
(file_name, to_dir=
'./'):
"""unzip zip file"""
zip_file = zipfile.zipfile(file_name)
if os.path.isdir(to_dir)
:pass
else
: os.mkdir(to_dir)
for names in zip_file.namelist():
zip_file.extract(names, to_dir)
zip_file.close(
)def
download_driver
(to_dir=
'./'
, version='')
:print
('install chrome-driver first'
) url =
''iflen
(version)
>0:
url =
'_'+version
version = requests.get(url)
.content.decode(
'utf8'
) driver_file =
''+ version +
'/chromedriver_win32.zip'
r = requests.get(driver_file)
download_zip =
"chromedriver_win32.zip"
with
open
(download_zip,
"wb"
)as code:
code.write(r.content)
un_zip(download_zip, to_dir)
os.remove(download_zip)
try:
driver = webdriver.chrome(
)except exception as e:
download_driver(to_dir=
'./'
, version=
'76'
) driver = webdriver.chrome(
)with
open
("url.txt"
,'r')as
file
: urls =
[ line.strip(
'\n'
)for line in
file
.readlines()]
visit(urls)
for i in driver.window_handles:
driver.switch_to.window(i)
driver.close(
)
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