persisted

Persisted

Persisted is a two-way code/data persistence framework. It can update a variable when a watched file changes, and also save data back to the file when the variable changes.

>>> import persisted
>>> data = persisted.as_string('README.md', '')
>>> data.get()
"# Persisted\n\nPersisted is a two-way..."
>>> with data:
        data.value = "Change to this"
>>> data.get()
"Change to this"

This is very useful to keep configuration files / application state synchronized within a long-running application, and also hot-reload code / modules.

Installing

$ python -m pip install persisted

Usage

There are several helper functions for you to get started:

• persisted.as_bytes
• persisted.as_string
• persisted.as_pickle
• persisted.as_module (only reloading)

All of them call persisted.Persisted to create a Persisted object to interact with.