py-signe

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Introduction

A responsive system implemented in python with reference to the core mechanisms of S.js and vue reactivity.

Installation

pip install signe

使用

from signe import signal, effect, computed

num = signal(1)

@computed
def plus1():
    return num.value + 1


@effect
def _():
    print('plus1 is :',plus1.value)

# should print `plus1 is :2`

num.value=10

# should print `plus1 is :11`

• signal Creates a signal. Reads and writes via .value.
• computed Creates a computed expression. The argument is a function. When a signal (signal.value) is used in the function to get a value, this calculation expression is automatically associated with the signal. When the value of the signal changes, the computed expression is automatically triggered to change.
• effect is essentially the same as computed. A change in the signal or computed expression is automatically captured and triggered.