Chrome controller for Humans, base on Chrome Devtools Protocol(CDP) and python3.7+. Read more: https://github.com/ClericPy/ichrome.

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Project links

Homepage

Project description

ichrome

Chrome controller for Humans, base on Chrome Devtools Protocol(CDP) and python3.7+.

Why?

Pyppeteer is awesome, but I don't need so much
- spelling of pyppeteer is confused
- event-driven programming is not always advisable.
Selenium is slow
- webdrivers often come with memory leak.
In desperate need of a stable toolkit to communicate with Chrome browser (or other Blink-based browsers like Chromium)
- fast http & websocket connections (based on aiohttp) for asyncio environment
- ichrome.debugger is a sync tool and depends on the ichrome.async_utils
  - a choice for debugging interactively.

Features

Chrome process daemon
- auto-restart
- command-line usage support
- async environment compatible
Connect to an existing Chrome
Operations on Tabs under stable websocket
- Package very commonly used functions
ChromeEngine progress pool utils
- support HTTP api router with FastAPI

Install

Install from PyPI

pip install ichrome -U

Uninstall & Clear the user data dir

    $ python3 -m ichrome --clean
    $ pip uninstall ichrome

Download & unzip the latest version of Chromium browser

python3 -m ichrome --install="/home/root/chrome_bin"

WARNING:

install the missing packages yourself
1. use ldd chrome | grep not on linux to check and install them, or view the link: Checking out and building Chromium on Linux
add --no-sandbox to extra_configs to avoid No usable sandbox errors, unless you really need sandbox: Chromium: "Running without the SUID sandbox!" error - Ask Ubuntu

Have a Try?

Interactive Debugging (REPL Mode)

There are two ways to enter the repl mode

python3 -m ichrome -t
or run await tab.repl() in your code

λ python3 -m ichrome -t
>>> tab.goto('https://github.com/ClericPy')
True
>>> title = tab.title
>>> title
'ClericPy (ClericPy) · GitHub'
>>> tab.click('.pinned-item-list-item-content [href="/ClericPy/ichrome"]')
Tag(a)
>>> tab.wait_loading(2)
True
>>> tab.wait_loading(2)
False
>>> tab.js('document.body.innerHTML="Updated"')
{'type': 'string', 'value': 'Updated'}
>>> tab.history_back()
True
>>> tab.set_html('hello world')
{'id': 21, 'result': {}}
>>> tab.set_ua('no UA')
{'id': 22, 'result': {}}
>>> tab.goto('http://httpbin.org/user-agent')
True
>>> tab.html
'<html><head></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">{\n  "user-agent": "no UA"\n}\n</pre></body></html>'

Quick Start

Start a new chrome daemon process with headless=False
1. python -m ichrome
2. Then connect to an exist chrome instance
  1. async with AsyncChrome() as cd:
or launching the chrome daemon in code may be a better choice
```
 async with AsyncChromeDaemon() as cd:
     async with cd.connect_tab() as tab:
```
Operations on the tabs: new tab, wait loading, run javascript, get html, close tab
Close the browser GRACEFULLY instead of killing process

from ichrome import AsyncChromeDaemon
import asyncio


async def main():
    async with AsyncChromeDaemon(headless=0, disable_image=False) as cd:
        # index: 0=current activate tab, 1=tab 1, None=new tab, $URL=new tab for url
        async with cd.connect_tab(index=0, auto_close=True) as tab:
            # tab: AsyncTab
            await tab.alert(
                'Now using the default tab and goto the url, click to continue.'
            )
            print(await tab.goto('https://github.com/ClericPy/ichrome',
                                 timeout=5))
            # wait tag appeared
            await tab.wait_tag('[data-content="Issues"]', max_wait_time=5)
            await tab.alert(
                'Here the Issues tag appeared, I will click that button.')
            # click the issues tag
            await tab.click('[data-content="Issues"]')
            await tab.wait_tag('#js-issues-search')
            await tab.alert('Now will input some text and search the issues.')
            await tab.mouse_click_element_rect('#js-issues-search')
            await tab.keyboard_send(string='chromium')
            await tab.js(
                r'''document.querySelector('[role="search"]').submit()''')
            await tab.wait_loading(5)
            await asyncio.sleep(2)
            await tab.alert('demo finished.')

            # start repl mode?
            # await tab.repl()

            # no need to close tab for auto_close=True
            # await tab.close()

        # # close browser gracefully
        # await cd.close_browser()
        print('clearing the user data cache.')
        await cd.clear_user_data_dir()


if __name__ == "__main__":
    asyncio.run(main())

Listen the network

import asyncio

from ichrome import AsyncChromeDaemon


async def main():
    async with AsyncChromeDaemon() as cd:
        async with cd.connect_tab(index=0) as tab:

            def filter_function(r):
                try:
                    url = r['params']['response']['url']
                    return url == 'http://httpbin.org/get'
                except KeyError:
                    pass

            async with tab.wait_response_context(
                    filter_function=filter_function,
                    timeout=5,
            ) as r:
                await tab.goto('http://httpbin.org/get')
                result = await r
                if result:
                    print(result['data'])
                assert 'User-Agent' in result['data']


if __name__ == "__main__":
    asyncio.run(main())

Example Code: examples_async.py & Classic Use Cases

AsyncChrome feature list

server

return f"http://{self.host}:{self.port}", such as http://127.0.0.1:9222

version

version info from /json/version format like:

{'Browser': 'Chrome/77.0.3865.90', 'Protocol-Version': '1.3', 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36', 'V8-Version': '7.7.299.11', 'WebKit-Version': '537.36 (@58c425ba843df2918d9d4b409331972646c393dd)', 'webSocketDebuggerUrl': 'ws://127.0.0.1:9222/devtools/browser/b5fbd149-959b-4603-b209-cfd26d66bdc1'}

connect / check / ok

check alive
get_tabs / tabs / get_tab / get_tabs

get the AsyncTab instance from /json.
new_tab / activate_tab / close_tab / close_tabs

operating tabs.
close_browser

find the activated tab and send Browser.close message, close the connected chrome browser gracefully.
```
await chrome.close_browser()
```
kill

force kill the chrome process with self.port.
```
await chrome.kill()
```

connect_tabs

connect websockets for multiple tabs in one with context, and disconnect before exiting.

tab0: AsyncTab = (await chrome.tabs)[0]
tab1: AsyncTab = await chrome.new_tab()
async with chrome.connect_tabs([tab0, tab1]):
    assert (await tab0.current_url) == 'about:blank'
    assert (await tab1.current_url) == 'about:blank'

connect_tab

The easiest way to get a connected tab. get an existing tab

async with chrome.connect_tab(0) as tab:
    print(await tab.current_title)

get a new tab and auto close it

async with chrome.connect_tab(None, True) as tab:
    print(await tab.current_title)

get a new tab with given url and auto close it

async with chrome.connect_tab('http://python.org', True) as tab:
    print(await tab.current_title)

AsyncTab feature list

set_url / reload

navigate to a new url(return bool for whether load finished), or send Page.reload message.
wait_event

listening the events with given name, and separate from other same-name events with filter_function, finally run the callback_function with result.
wait_page_loading / wait_loading

wait for Page.loadEventFired event, or stop loading while timeout. Different from wait_loading_finished.
wait_response / wait_request

filt the Network.responseReceived / Network.requestWillBeSent event by filter_function, return the request_dict which can be used by get_response / get_response_body / get_request_post_data. WARNING: requestWillBeSent event fired do not mean the response is ready, should await tab.wait_request_loading(request_dict) or await tab.get_response(request_dict, wait_loading=True)
wait_request_loading / wait_loading_finished

sometimes event got request_dict with wait_response, but the ajax request is still fetching, which need to wait the Network.loadingFinished event.
activate / activate_tab

activate tab with websocket / http message.
close / close_tab

close tab with websocket / http message.
add_js_onload

Page.addScriptToEvaluateOnNewDocument, which means this javascript code will be run before page loaded.
clear_browser_cache / clear_browser_cookies

Network.clearBrowserCache and Network.clearBrowserCookies
querySelectorAll

get the tag instance, which contains the tagName, innerHTML, outerHTML, textContent, attributes attrs.
click

click the element queried by given css selector.
refresh_tab_info

to refresh the init attrs: url, title.
current_html / current_title / current_url

get the current html / title / url with tab.js. or using the refresh_tab_info method and init attrs.
crash

Page.crash
get_cookies / get_all_cookies / delete_cookies / set_cookie

some page cookies operations.
set_headers / set_ua

Network.setExtraHTTPHeaders and Network.setUserAgentOverride, used to update headers dynamically.
close_browser

send Browser.close message to close the chrome browser gracefully.
get_bounding_client_rect / get_element_clip

get_element_clip is alias name for the other, these two method is to get the rect of element which queried by css element.
screenshot / screenshot_element

get the screenshot base64 encoded image data. screenshot_element should be given a css selector to locate the element.
get_page_size / get_screen_size

size of current window or the whole screen.
get_response

get the response body with the given request dict.
js

run the given js code, return the raw response from sending Runtime.evaluate message.
inject_js_url

inject some js url, like <script src="xxx/static/js/jquery.min.js"></script> do.

get_value & get_variable

run the given js variable or expression, and return the result.

await tab.get_value('document.title')
await tab.get_value("document.querySelector('title').innerText")

keyboard_send

dispath key event with Input.dispatchKeyEvent
mouse_click

dispath click event on given position
mouse_drag

dispath drag event on given position, and return the target x, y. duration arg is to slow down the move speed.
mouse_drag_rel

dispath drag event on given offset, and return the target x, y.

mouse_drag_rel

drag with offsets continuously.

await tab.set_url('https://draw.yunser.com/')
walker = await tab.mouse_drag_rel_chain(320, 145).move(50, 0, 0.2).move(
    0, 50, 0.2).move(-50, 0, 0.2).move(0, -50, 0.2)
await walker.move(50 * 1.414, 50 * 1.414, 0.2)

mouse_press / mouse_release / mouse_move / mouse_move_rel / mouse_move_rel_chain

similar to the drag features. These mouse features is only dispatched events, not the real mouse action.
history_back / history_forward / goto_history_relative / reset_history

back / forward history

Command Line Usage (Daemon Mode)

Be used for launching a chrome daemon process. The unhandled args will be treated as chrome raw args and appended to extra_config list.

Chromium Command Line Args List

Shutdown Chrome process with the given port

λ python3 -m ichrome -s 9222
2018-11-27 23:01:59 DEBUG [ichrome] base.py(329): kill chrome.exe --remote-debugging-port=9222
2018-11-27 23:02:00 DEBUG [ichrome] base.py(329): kill chrome.exe --remote-debugging-port=9222

Launch a Chrome daemon process

λ python3 -m ichrome -p 9222 --start_url "http://bing.com" --disable_image
2018-11-27 23:03:57 INFO  [ichrome] __main__.py(69): ChromeDaemon cmd args: {'daemon': True, 'block': True, 'chrome_path': '', 'host': 'localhost', 'port': 9222, 'headless': False, 'user_agent': '', 'proxy': '', 'user_data_dir': None, 'disable_image': True, 'start_url': 'http://bing.com', 'extra_config': '', 'max_deaths': 1, 'timeout': 2}

Crawl the given URL, output the HTML DOM

λ python3 -m ichrome --crawl --headless --timeout=2 http://api.ipify.org/
<html><head></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">38.143.68.66</pre></body></html>

To use default user dir (ignore ichrome user-dir settings)

ensure the existing Chromes get closed

λ python -m ichrome -U null

Details:

$ python3 -m ichrome --help

usage:
    All the unknown args will be appended to extra_config as chrome original args.
    Maybe you can have a try by typing: `python3 -m ichrome --try`

Demo:
    > python -m ichrome -H 127.0.0.1 -p 9222 --window-size=1212,1212 --incognito
    > ChromeDaemon cmd args: port=9222, {'chrome_path': '', 'host': '127.0.0.1', 'headless': False, 'user_agent': '', 'proxy': '', 'user_data_dir': WindowsPath('C:/Users/root/ichrome_user_data'), 'disable_image': False, 'start_url': 'about:blank', 'extra_config': ['--window-size=1212,1212', '--incognito'], 'max_deaths': 1, 'timeout':1, 'proc_check_interval': 5, 'debug': False}

    > python -m ichrome
    > ChromeDaemon cmd args: port=9222, {'chrome_path': '', 'host': '127.0.0.1', 'headless': False, 'user_agent': '', 'proxy': '', 'user_data_dir': WindowsPath('C:/Users/root/ichrome_user_data'), 'disable_image': False, 'start_url': 'about:blank', 'extra_config': [], 'max_deaths': 1, 'timeout': 1, 'proc_check_interval': 5, 'debug': False}

Other operations:
    1. kill local chrome process with given port:
        python -m ichrome -s 9222
        python -m ichrome -k 9222
    2. clear user_data_dir path (remove the folder and files):
        python -m ichrome --clear
        python -m ichrome --clean
        python -m ichrome -C -p 9222
    3. show ChromeDaemon.__doc__:
        python -m ichrome --doc
    4. crawl the URL, output the HTML DOM:
        python -m ichrome --crawl --headless --timeout=2 http://myip.ipip.net/

optional arguments:
  -h, --help            show this help message and exit
  -v, -V, --version     ichrome version info
  -c CONFIG, --config CONFIG
                        load config dict from JSON file of given path
  -cp CHROME_PATH, --chrome-path CHROME_PATH, --chrome_path CHROME_PATH
                        chrome executable file path, default to null for
                        automatic searching
  -H HOST, --host HOST  --remote-debugging-address, default to 127.0.0.1
  -p PORT, --port PORT  --remote-debugging-port, default to 9222
  --headless            --headless and --hide-scrollbars, default to False
  -s SHUTDOWN, -k SHUTDOWN, --shutdown SHUTDOWN
                        shutdown the given port, only for local running chrome
  -A USER_AGENT, --user-agent USER_AGENT, --user_agent USER_AGENT
                        --user-agent, default to Chrome PC: Mozilla/5.0
                        (Linux; Android 6.0; Nexus 5 Build/MRA58N)
                        AppleWebKit/537.36 (KHTML, like Gecko)
                        Chrome/83.0.4103.106 Mobile Safari/537.36
  -x PROXY, --proxy PROXY
                        --proxy-server, default to None
  -U USER_DATA_DIR, --user-data-dir USER_DATA_DIR, --user_data_dir USER_DATA_DIR
                        user_data_dir to save user data, default to
                        ~/ichrome_user_data
  --disable-image, --disable_image
                        disable image for loading performance, default to
                        False
  -url START_URL, --start-url START_URL, --start_url START_URL
                        start url while launching chrome, default to
                        about:blank
  --max-deaths MAX_DEATHS, --max_deaths MAX_DEATHS
                        restart times. default to 1 for without auto-restart
  --timeout TIMEOUT     timeout to connect the remote server, default to 1 for
                        localhost
  -w WORKERS, --workers WORKERS
                        the number of worker processes, default to 1
  --proc-check-interval PROC_CHECK_INTERVAL, --proc_check_interval PROC_CHECK_INTERVAL
                        check chrome process alive every interval seconds
  --crawl               crawl the given URL, output the HTML DOM
  -C, --clear, --clear  clean user_data_dir
  --doc                 show ChromeDaemon.__doc__
  --debug               set logger level to DEBUG
  -K, --killall         killall chrome launched local with --remote-debugging-
                        port
  -t, --try, --demo, --repl
                        Have a try for ichrome with repl mode.

What's More?

As we known, Chrome browsers (including various webdriver versions) will have the following problems in a long-running scene:

memory leak
missing websocket connections
infinitely growing cache
other unpredictable problems...

So you may need a more stable process pool with ChromeEngine(HTTP usage & normal usage):

Show more

ChromeEngine HTTP usage

Server

pip install -U ichrome[web]

import os

import uvicorn
from fastapi import FastAPI

from ichrome import AsyncTab
from ichrome.routers.fastapi_routes import ChromeAPIRouter

app = FastAPI()
# reset max_msg_size and window size for a large size screenshot
AsyncTab._DEFAULT_WS_KWARGS['max_msg_size'] = 10 * 1024**2
app.include_router(ChromeAPIRouter(workers_amount=os.cpu_count(),
                                   headless=True,
                                   extra_config=['--window-size=1920,1080']),
                   prefix='/chrome')

uvicorn.run(app)

# view url with your browser
# http://127.0.0.1:8000/chrome/screenshot?url=http://bing.com
# http://127.0.0.1:8000/chrome/download?url=http://bing.com

Client

from torequests import tPool
from inspect import getsource
req = tPool()


async def tab_callback(self, tab, data, timeout):
    await tab.set_url(data['url'], timeout=timeout)
    return (await tab.querySelector('h1')).text


r = req.post('http://127.0.0.1:8000/chrome/do',
             json={
                 'data': {
                     'url': 'http://httpbin.org/html'
                 },
                 'tab_callback': getsource(tab_callback),
                 'timeout': 10
             })
print(r.text)
# "Herman Melville - Moby-Dick"

ChromeEngine normal usage

Connect tab and do something

import asyncio

from ichrome.pool import ChromeEngine


def test_chrome_engine_connect_tab():

    async def _test_chrome_engine_connect_tab():

        async with ChromeEngine(port=9234, headless=True,
                                disable_image=True) as ce:
            async with ce.connect_tab(port=9234) as tab:
                await tab.goto('http://pypi.org')
                print(await tab.title)

    asyncio.get_event_loop().run_until_complete(
        _test_chrome_engine_connect_tab())


if __name__ == "__main__":
    test_chrome_engine_connect_tab()
# INFO  2020-10-13 22:18:53 [ichrome] pool.py(464): [enqueue](0) ChromeTask(<9234>, PENDING, id=1, tab=None), timeout=None, data=<ichrome.pool._TabWorker object at 0x000002232841D9A0>
# INFO  2020-10-13 22:18:55 [ichrome] pool.py(172): [online] ChromeWorker(<9234>, 0/5, 0 todos) is online.
# INFO  2020-10-13 22:18:55 [ichrome] pool.py(200): ChromeWorker(<9234>, 0/5, 0 todos) get a new task ChromeTask(<9234>, PENDING, id=1, tab=None).
# PyPI · The Python Package Index
# INFO  2020-10-13 22:18:57 [ichrome] pool.py(182): [offline] ChromeWorker(<9234>, 0/5, 0 todos) is offline.
# INFO  2020-10-13 22:18:57 [ichrome] pool.py(241): [finished](0) ChromeTask(<9234>, PENDING, id=1, tab=None)

Batch Tasks

import asyncio
from inspect import getsource

from ichrome.pool import ChromeEngine


async def tab_callback(self, tab, url, timeout):
    await tab.set_url(url, timeout=5)
    return await tab.title


def test_pool():

    async def _test_pool():
        async with ChromeEngine(max_concurrent_tabs=5,
                                headless=True,
                                disable_image=True) as ce:
            tasks = [
                asyncio.ensure_future(
                    ce.do('http://bing.com', tab_callback, timeout=10))
                for _ in range(3)
            ] + [
                asyncio.ensure_future(
                    ce.do(
                        'http://bing.com', getsource(tab_callback), timeout=10))
                for _ in range(3)
            ]
            for task in tasks:
                result = await task
                print(result)
                assert result

    # asyncio.run will raise aiohttp issue: https://github.com/aio-libs/aiohttp/issues/4324
    asyncio.get_event_loop().run_until_complete(_test_pool())


if __name__ == "__main__":
    test_pool()

TODO

~~Concurrent support. (gevent, threading, asyncio)~~
Add auto_restart while crash.
~~Auto remove the zombie tabs with a lifebook.~~
Add some useful examples.
Coroutine support (for asyncio).
Standard test cases.
Stable Chrome Process Pool.
HTTP apis server console with FastAPI.
Complete the document.

Project details

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Project links

Homepage

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4.0.2

Jun 4, 2024

4.0.1

Nov 9, 2023

4.0.0

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3.2.0

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SHA256	`f4f1d202ad284e3f2ed801566e88152fa0d616332129bf0e515bf8eeeb64391b`
MD5	`58628c1a8c8db7e5936983c29849718b`
BLAKE2b-256	`163a38e55b2b2e5f058701c2f105fb4df68816bcb25303114d5eb2eb189f4378`