[英]Python Selenium: Extracting the PID of Chrome and Firefox browser
如何獲取Selenium啟動的Chrome/Chromium或Firefox瀏覽器的進程ID(PID)? 我正在尋找一種在 Selenium Grid 中啟動瀏覽器時也能工作的解決方案。
Selenium Grid 無法使用driver.service.process.pid
。
要檢索Selenium啟動的 Chrome/Firefox 瀏覽器的進程 ID (PID) ,您可以使用以下解決方案:
代碼塊:
from selenium import webdriver driver = webdriver.Firefox(executable_path=r'C:\\WebDrivers\\geckodriver.exe') my_dict = driver.capabilities print("PID of the browser process is: " + str(my_dict['moz:processID']))
控制台輸出:
PID of the browser process is: 2172
代碼塊:
from selenium import webdriver from contextlib import suppress import psutil driver = webdriver.Chrome(executable_path=r'C:\\WebDrivers\\chromedriver.exe') driver.get('https://www.google.com/') for process in psutil.process_iter(): if process.name() == 'chrome.exe' and '--test-type=webdriver' in process.cmdline(): with suppress(psutil.NoSuchProcess): print(process.pid) driver.quit()
控制台輸出:
12384 13656 13800
您可以在以下位置找到一些相關的詳細討論:
使用 Selenium 啟動瀏覽器時,它會為配置文件設置創建一個新的臨時目錄(除非另有說明)。 我們可以使用它來識別瀏覽器使用的特定進程:
In [470]: driver.capabilities
Out[470]:
{'acceptInsecureCerts': False,
'browserName': 'chrome',
'browserVersion': '86.0.4240.198',
'chrome': {'chromedriverVersion': '85.0.4183.87 (cd6713ebf92fa1cacc0f1a598df280093af0c5d7-refs/branch-heads/4183@{#1689})',
'userDataDir': '/tmp/.com.google.Chrome.nW2W6p'},
'goog:chromeOptions': {'debuggerAddress': 'localhost:44047'},
...}
這種方法適用於 Firefox 和 Chrome,即使您有多個瀏覽器實例正在運行,並且如果瀏覽器是通過 Selenium Grid 啟動的(如果代碼在節點服務器上運行)。
您將需要安裝psutil
:
pip install psutil
import psutil
import re
from typing import List
def pgrep(term, regex=False, full=True) -> List[psutil.Process]:
"""
If `full`, then `term` is matched against the command line
the process has been called with,
else it is only matched against the process name.
"""
procs = []
for proc in psutil.process_iter(['pid', 'name', 'username', 'cmdline']):
if full:
name = ' '.join(proc.cmdline())
else:
name = proc.name()
try:
if regex and re.search(term, name):
procs.append(proc)
elif term in name:
procs.append(proc)
except psutil.NoSuchProcess:
pass
return procs
def browser_procs(driver) -> List[psutil.Process]:
"""
Return the Processes associated with the browser
(excluding geckodriver/chromedriver)
"""
if driver.capabilities['browserName'] == 'firefox':
directory = driver.capabilities['moz:profile']
else:
directory = driver.capabilities['chrome']['userDataDir']
procs = pgrep(directory, full=True)
procs.sort(key=lambda p: p.pid)
return procs
def browser_proc(driver) -> psutil.Process:
"""
Return the main Process of the browser
(excluding geckodriver/chromedriver)
"""
procs = browser_procs(driver)
for proc in procs:
name = proc.parent().name()
if 'chromedriver' in name or 'geckodriver' in name:
return proc
raise ValueError
def driver_proc(driver) -> psutil.Process:
"""
Return the Process of the geckodriver/chromedriver
"""
return browser_proc(driver).parent()
讓我們看看它的實際效果:
In [436]: driver = Chrome()
In [451]: browser_procs(driver)
Out[468]:
[psutil.Process(pid=38453, name='chrome', status='sleeping', started='18:45:51'),
psutil.Process(pid=38462, name='chrome', status='sleeping', started='18:45:51'),
psutil.Process(pid=38463, name='chrome', status='sleeping', started='18:45:51'),
psutil.Process(pid=38467, name='chrome', status='sleeping', started='18:45:51'),
psutil.Process(pid=38486, name='chrome', status='sleeping', started='18:45:52'),
psutil.Process(pid=38489, name='chrome', status='sleeping', started='18:45:52'),
psutil.Process(pid=38521, name='chrome', status='sleeping', started='18:45:52'),
psutil.Process(pid=38522, name='chrome', status='sleeping', started='18:45:52')]
In [471]: p = browser_proc(driver)
In [472]: p.pid
Out[472]: 38453
如果您想要 chromedriver 或 geckodriver 的 PID,那么您可以通過browser_proc(driver).parent()
獲取該進程
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