A library for Python 3.6 and above that can track changes to mutable data types.
With spectate
, complicated protocols for managing updates don't need to be the outward responsibility of a user and can instead be done automagically in the background. For instance, syncing the state between a server and client can controlled by spectate
, so users don't have to.
https://python-spectate.readthedocs.io/en/latest/
- stable
pip install spectate
- pre-release
pip install spectate --pre
- master
pip install git+https://github.com/rmorshea/spectate.git#egg=spectate
- developer
git clone https://github.com/rmorshea/spectate && cd spectate/ && pip install -e . -r requirements.txt
If you're using Python 3.6 and above, create a model object
from spectate import mvc
l = mvc.List()
Register a view function to it that observes changes
@mvc.view(l)
def printer(l, events):
for e in events:
print(e)
Then modify your object and watch the view function react
l.append(0)
l[0] = 1
l.extend([2, 3])
{'index': 0, 'old': Undefined, 'new': 0}
{'index': 0, 'old': 0, 'new': 1}
{'index': 1, 'old': Undefined, 'new': 2}
{'index': 2, 'old': Undefined, 'new': 3}