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debugtoolbar for aiohttp

Project description

|Build status| PyPI Chat on Gitter

aiohttp_debugtoolbar provides a debug toolbar for your aiohttp web application. Library is port of pyramid_debugtoolbar and still in early development stages. Basic functionality has been ported:

  • basic panels
  • intercept redirects
  • intercept and pretty print exception
  • interactive python console
  • show source code

Ported Panels

HeaderDebugPanel, PerformanceDebugPanel, TracebackPanel, SettingsDebugPanel, MiddlewaresDebugPanel, VersionDebugPanel, RoutesDebugPanel, RequestVarsDebugPanel, LoggingPanel

Help Needed

Are you coder looking for a project to contribute to python/asyncio libraries? This is the project for you!

Install and Configuration

$ pip install aiohttp_debugtoolbar

In order to plug in aiohttp_debugtoolbar, call aiohttp_debugtoolbar.setup on your app.

import aiohttp_debugtoolbar
app = web.Application(loop=loop)

Full Example

import asyncio
import jinja2
import aiohttp_debugtoolbar
import aiohttp_jinja2

from aiohttp import web

async def basic_handler(request):
    return {'title': 'example aiohttp_debugtoolbar!',
            'text': 'Hello aiohttp_debugtoolbar!',

async def exception_handler(request):
    raise NotImplementedError

async def init(loop):
    # add aiohttp_debugtoolbar middleware to you application
    app = web.Application(loop=loop)
    # install aiohttp_debugtoolbar

    template = """
            <title>{{ title }}</title>
            <h1>{{ text }}</h1>
              <a href="{{ app.router['exc_example'].url() }}">
              Exception example</a>
    # install jinja2 templates
    loader = jinja2.DictLoader({'index.html': template})
    aiohttp_jinja2.setup(app, loader=loader)

    # init routes for index page, and page with error
    app.router.add_route('GET', '/', basic_handler, name='index')
    app.router.add_route('GET', '/exc', exception_handler,
    return app

loop = asyncio.get_event_loop()
app = loop.run_until_complete(init(loop))
web.run_app(app, host='', port=9000)


aiohttp_debugtoolbar.setup(app, hosts=['', ])

Supported options

  • enabled: The debugtoolbar is disabled if False. By default is set to True.
  • intercept_redirects: If True, intercept redirect and display an intermediate page with a link to the redirect page. By default is set to True.
  • hosts: The list of allow hosts. By default is set to [‘’, ‘::1’].
  • exclude_prefixes: The list of forbidden hosts. By default is set to [].
  • check_host: If False, disable the host check and display debugtoolbar for any host. By default is set to True.
  • max_request_history: The max value for storing requests. By default is set to 100.
  • max_visible_requests: The max value of display requests. By default is set to 10.
  • path_prefix: The prefix of path to debugtoolbar. By default is set to ‘/_debugtoolbar’.


I’ve borrowed a lot of code from following projects. I highly recommend to check them out:



0.6.0 (2020-01-25)

  • Fix ClassBasedView support #207
  • Drop aiohttp<3.3 support
  • Drop Python 3.4 support
  • Drop yeild from and @asyncio.coroutine support

0.5.0 (2018-02-14)

  • Add safe filter to render_content #195
  • Adopt to aiohtp 3.0

0.4.1 (2017-08-30)

  • Fixed issue with redirects without location header #174

0.4.0 (2017-05-04)

  • Added asyncio trove classifier
  • Addes support for aiohttp>=2.0.7

0.3.0 (2016-11-18)

  • Fixed middleware route finding when using sub-apps #65
  • Add examples for extra panels: pgsql & redis monitor #59

0.2.0 (2016-11-08)

  • Refactor test suite

0.1.4 (2016-11-07)

  • Rename to aiohttp-debugtoolbar
  • Fix imcompatibility with aiohttp==1.1

0.1.3 (2016-10-27)

  • Fix a link to request info page, sort request information alphabetically #52

0.1.2 (2016-09-27)

  • Fixed empty functions names in performance panel #43 (Thanks @kammala!)
  • Fixed flashing message during page rendering issue #46

0.1.1 (2016-02-21)

  • Fixed a demo
  • Added syntax highlight in traceback view, switched highlighter from highlight.js to prism.js #31

0.1.0 (2016-02-13)

  • Fixed python 3.5 support (Thanks @stormandco!)
  • Added view source button in RoutesDebugPanel (Thanks @stormandco!)
  • Dropped support for Python 3.3 (Thanks @sloria!)
  • Add middleware in setup method (Thanks @sloria!)
  • Fixed bug with interactive console
  • Fixed support for aiohttp>=0.21.1

0.0.5 (2015-09-13)

  • Fixed IPv6 socket family error (Thanks @stormandco!)

0.0.4 (2015-09-05)

  • Fixed support for aiohttp>=0.17. (Thanks @himikof!)

0.0.3 (2015-07-03)

  • Switched template engine from mako to jinja2. (Thanks @iho!)
  • Added custom yield from to track context switches inside coroutine.
  • Implemented panel for collecting request log messages.
  • Disable toolbar code injecting for non web.Response answers (StreamResponse or WebSocketResponse for example) #12

0.0.2 (2015-05-26)

  • Redesign UI look-and-feel
  • Rename toolbar_middleware_factory to just middleware.

0.0.1 (2015-05-18)

  • Initial release.

Project details

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