Epyk and full stack development


Epyk documentation will point you to the appropriate web concept.

The docstrings will link to either the online precised documentation or to the wrapped package. Epyk’s target is to make the link between Python and the web in a transparent manner.


Also components and entry points are structure to make sure you learn the various concepts of a web page. Thus the keys words dom, console.log, InlineCss, css properties, page.bodt, component.onReady() very popular in web development will be familiar to you as well.

Those concept are illustrated in the local section of the templates Github repo



Checking performances in important on the backend but also on the front end side. Epyk will rely on the native features to profile the python and on the JavaScript side it will provide the profile keyword to write log messages to the console (F12 in the browser):

def click(self, js_funcs, profile=None, source_event=None, on_ready=False):

Styles & Configuration

CSS Style


It is possible to use CSS inline properties or bespoke CSS classes in order to change the display of components. Quite a few examples are available but the easiest is to use style.css properties:

button = page.ui.buttons.colored("Test")
button.style.css.color = "yellow" # Change the text color
button.style.css.position = "fixed"
button.style.css.bottom = 10 # Default will use px
button.style.css.right = 10 # Default will use px

More examples are available in the section Library extensions

Virtual classes

There are some shortcuts available to perform common and standard style changes. For example to change a style by putting the mouse hover a component can be done:

p = page.ui.texts.paragraph("This is a paragraph", helper="Paragraph helper")
p.style.hover({"color": "red"})

Or a bit more complex by doing, it is possible to add a full CSS class structure to a specific component:

p = page.ui.texts.paragraph("This is a paragraph", helper="Paragraph helper")
p.style.add_custom_class({"_attrs": {"color": "green"}, "_hover": {"color": "blue"}}, to_component=True)

CSS effects

It is also possible to use predefined CSS effects and animates:

title2 = page.ui.titles.title("Epyk in few words", align="center")

title1 = page.ui.titles.title("A vast selection of Charts", align="center")

Interactivity & events

Component events


Epyk is dedicated to be a bridge to JavaScript. Thus it will provide ways to share pieces of code in both worlds. It is possible to structure your Python components and share them using Pyk files or to transpile a dashboard to then be shared in the popular online editors.


The purpose of this framework is to benefit from both worlds but also to contribute by providing feedbacks to the external libraries

To Pyk

To Jupyter or JupyterLab

Epyk can be imported to any Notebook. More details will come in this section.

To CodePen

The below is a code generated using the codepen outs to illustrate a problem:

import epyk as pk

page = pk.Page()

records = {"data": [
      {"name": 'Test', "_children": [
        {"name": 'AAAA', "progress": 767860},
        {"name": 'BBB', "progress": -2877980},
    ], "columns": [
      {"title": "Task Name", "field": "name"},
      {"title": "Progress", "field": "progress"},

data = [
      {"name": 'Test', "_children": [
        {"name": 'AAAA', "progress": 767860},
        {"name": 'BBB', "progress": -2877980},

table = page.ui.tables.tabulators.hierarchy(data, cols=["name"], rows=["progress"], width=(300, 'px'))
table.get_column("name").headerFilter = "input"



To W3Try