eche 0.2.1

Little helper for handling entity clusters

Usage

Eche provides a ClusterHelper class to conveniently handle entity clusters.

  from eche import ClusterHelper
  ch = ClusterHelper([{"a1", "b1"}, {"a2", "b2"}])
  print(ch.clusters)
  {0: {'a1', 'b1'}, 1: {'a2', 'b2'}}

Add an element to a cluster

  ch.add_to_cluster(0, "c1")
  print(ch.clusters)
  {0: {'a1', 'b1', 'c1'}, 1: {'a2', 'b2'}}

Add a new cluster

  ch.add({"e2", "f1", "c3"})
  print(ch.clusters)
  {0: {'a1', 'b1', 'c1'}, 1: {'a2', 'b2'}, 2: {'f1', 'e2', 'c3'}}

Remove an element from a cluster

  ch.remove("b1")
  print(ch.clusters)
  {0: {'a1', 'c1'}, 1: {'a2', 'b2'}, 2: {'f1', 'e2', 'c3'}}

The __contains__ function is smartly overloaded. You can check if an entity is in the ClusterHelper:

  "a1" in ch
  # True

If a cluster is present

  {"c1","a1"} in ch
  # True

And even if a link exists or not

  ("f1","e2") in ch
  # True
  ("a1","e2") in ch
  # False

To know the cluster id of an entity you can look it up with

  print(ch.elements["a1"])
  0

To get members of a cluster either use

  print(ch.members(0))
  {'a1', 'b1', 'c1'}

or simply

  print(ch[0])
  {'a1', 'b1', 'c1'}

More functions can be found in the Documentation.

Installation

Simply use pip for installation:

pip install eche