h2o-q 0.1.1

Python driver for H2O Q Realtime Apps

H2O Q is a lightweight software stack for programming interactive web applications entirely in Python (no HTML/Javascript/CSS) required.

It is designed to make it fast, fun and easy to build low-latency, realtime, collaborative, web-based applications. It ships batteries-included with a suite of form and data visualization components for rapidly prototyping analytical and decision-support applications.

Q’s components work in conjunction with the Q relay server that facilitates realtime state synchronization between Python and web browsers.

Installing

Install and update using pip:

pip install -U h2o_q

Hello world

hello.py:

from h2o_q import site, ui

# Access the web page at http://localhost:55555/demo
page = site['/demo']

# Add some content.
page['example'] = ui.markdown_card(
  box='1 1 2 2',
  title='Hello World!',
  content='And now for something completely different.',
)

# Save the page
page.save()

Run hello.py:

$ python hello.py

Links

• Website: https://www.h2o.ai/h2o-q/

• Releases: https://pypi.org/project/h2o_q/

• Code: https://github.com/h2oai/h2o_q

• Issue tracker: https://github.com/h2oai/h2o_q/issues

Change Log

• v0.1.1

  • Added

    • Options for file type and size to file upload component.

    • API for displaying desktop notifications.

    • Buttons can now submit specific values instead of only True/False.

    • Examples for layout and card sizing.

    • Image card for displaying base64-encoded images.

    • Example for image card.

    • Vector graphics API.

    • Turtle graphics based path generator.

    • Examples for graphics card.

  • Fixed

    • Re-rendering performance improvements.

• v0.1.0

  • Added

    • Example for displaying iframe content > 2MB.

    • Example for plotting using matplotlib.

    • Example for plotting using Altair.

    • Example for plotting using Vega.

    • Example for plotting using Bokeh.

    • Example for plotting using custom D3.js Javascript.

    • Example for live dashboard with stats cards.

    • Example for master-detail user interfaces using ui.table().

    • Example for authoring multi-step wizard user interfaces.

    • Unload API: q.unload() to delete uploaded files.

• v0.0.7

  • Added

    • Download API: q.download().

    • Vega-lite support: ui.vega_card().

    • Context menu support to all cards.

    • refresh attribute on meta_card allows static pages to stop receiving live updates.

    • Passing -debug when starting server displays site stats at /_d/site.

    • Drag and drop support for file upload component.

    • Template expression support for markdown cards.

    • All APIs and examples documented.

    • All 110 examples now ship with the Sphinx documentation.

    • Documentation now ships with release download.

  • Changed

    • API consistency: ui.vis() renamed to ui.plot().

    • All stats cards now have descriptive names.

    • API consistency: ui.mark.mark renamed to ui.mark.type.

    • API consistency: page.sync() and page.push() renamed to page.save().

  • Removed

    • ui.dashboard_card() and ui.notebook_card().

• v0.0.6

  • Added

    • Log network traffic when logging is set to debug mode.

    • Capture and display unhandled exceptions on the UI.

    • Routing using location hash.

    • Toolbar component.

    • Tabs component.

    • Nav component.

    • Upload API: q.upload().

  • Changed

    • q.session renamed to q.user

• v0.0.5

  • Added

    • Add configure() API to configure environment before launching.

• v0.0.4

  • Added

    • Multi-user and multi-client support: launch apps in multicast or unicast modes in addition to broadcast mode.

    • Client-specific data can now be stored and accessed via q.client, similar to q.session and q.app.

    • Simpler page referencing: import site can be used instead of site = Site().

  • Changed

    • Apps now lauch in unicast mode by default instead of broadcast mode.

• v0.0.3

  • Added

    • Make Expando data structure available for apps.

• v0.0.2

  • Initial version

• v0.0.1

  • Package stub