Layerz
A simple module for creating layers of dependencies.
Deprecated
This project has been deprecated in favour of https://github.com/delfick/delfick_project
Installation
Just use pip!:
$ pip install layerz
Usage
from layerz import Layers
dep1 = type("dep1", (object, ), {"dependencies": lambda s, all_deps: []})()
dep2 = type("dep2", (object, ), {"dependencies": lambda s, all_deps: ["dep3"]})()
dep3 = type("dep3", (object, ), {"dependencies": lambda s, all_deps: ["dep1"]})()
dep4 = type("dep4", (object, ), {"dependencies": lambda s, all_deps: ["dep3"]})()
dep5 = type("dep1", (object, ), {"dependencies": lambda s, all_deps: ["dep4", "dep2"]})()
layers = Layers({"dep1": dep1, "dep2": dep2, "dep3": dep3, "dep4": dep4, "dep5": dep5})
layers.add_to_layers("dep5")
for layer in layers.layered:
# might get something like
# [("dep5", dep5)]
# [("dep4", dep4), ("dep2", dep2)]
# [("dep3", dep3)]
# [("dep1", dep1)]When we create the layers, it will do a depth first addition of all dependencies and only add a dep to a layer that occurs after all it's dependencies.
Cyclic dependencies will be complained about.
Tests
Install locally:
$ pip install -e . $ pip install -e ".[tests]"
And then use the helper script:
$ ./test.sh
