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Project Description

Redux reimplemented in Python.

To see it in action, try the todos demo. (Mouse-click needed, as in the original demo)

pip install urwid_todos ; python -m urwid_todos

What is it? Why would I want it?

The Redux Readme is a good place to start.

The Gist

The whole state of your app is stored in an object tree inside a single store. The only way to change the state tree is to emit an action, an object describing what happened. To specify how the actions transform the state tree, you write pure reducers.

That’s it!

from __future__ import print_function
import pydux

# This is a reducer, a pure function with (state, action) => state signature.
# It describes how an action transforms the state into the next state.
#
# The shape of the state is up to you: it can be a primitive, an array, an object,
# or even an frozendict data structure [1]. The only important part is that you should
# not mutate the state object, but return a new object if the state changes.
#
# [1]: https://pypi.python.org/pypi/frozendict
#
# In this example, we use a `if` statement and strings, but you can use a
# helper that follows a different convention if it makes sense for your
# project.
def counter(state, action):
    if state is None:
        state = 0
    if action is None:
        return state
    elif action['type'] == 'INCREMENT':
        return state + 1
    elif action['type'] == 'DECREMENT':
        return state - 1
    return state

# Create a Redux store holding the state of your app.
# Its API is { subscribe, dispatch, get_state }.
store = pydux.create_store(counter)

# You can use subscribe() to update the UI in response to state changes.
store.subscribe(lambda: print(store.get_state()))

# The only way to mutate the internal state is to dispatch an action.
# The actions can be serialized, logged or stored and later replayed.
store.dispatch({ 'type': 'INCREMENT' })
# 1
store.dispatch({ 'type': 'INCREMENT' })
# 2
store.dispatch({ 'type': 'DECREMENT' })
# 1

Further examples of Python usage

urwid_pydux provides a React-Redux Component API for text/console GUIs made with Urwid.

urwid_todos is a reimplementation of the Redux todos example made with urwid_pydux.

Acknowledgements

The initial test suite was imported from python-redux, a Redux implementation for Python 3.4+.

Release History

Release History

0.2.1

This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

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0.2.0

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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0.1.0

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
pydux-0.2.1.tar.gz (9.1 kB) Copy SHA256 Checksum SHA256 Source Dec 16, 2016

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