This is the Namespace Trie.
Namespace Trie is a implementation of a Trie data structure. Unlike typical implementations, which are splitting its value into single characters, Namespace Trie treats its values as namespaces. Namespaces are strings that are delimited by a period. Such namespaces often occur in programming languages, e.g. Java or Python and may also appear while using some libraries for programming languages that itself do not offer namespacing (e.g. the Google Closure library offers a namespace feature for JavaScript). The Namespace Trie may help you find flaws in the namespace structure.
Namespace Trie is developed for use with Closure Depresolver and may at the moment not be very useful as there is not standalone interface.
from pip:
pip install namespacetrie
from source:
pip install git+git://github.com/knutwalker/namespacetrie.git
from namespacetrie.nstrie import NsTrie
modules = ['com.example.foo', 'com.example.bar', 'com.example.baz.Foo',
'com.example.baz.Bar', 'org.example']
trie = NsTrie(modules)
'com.example' in trie
# True
trie.has('com.example')
# False
trie.has('com.example', False)
# True
trie.has('com.example.foo')
# True
node = trie.get('com.example')
node.keys()
# ['foo', 'bar', 'baz']
trie.to_dict()
# {'com': {'example': {'bar': 'com.example.bar',
# 'baz': {'Bar': 'com.example.baz.Bar', 'Foo': 'com.example.baz.Foo'},
# 'foo': 'com.example.foo'}},
# 'org': {'example': 'org.example'}}
list(trie.iterdepth())
# ['com', 'com.example', 'com.example.foo', 'com.example.bar',
# 'com.example.baz', 'com.example.baz.Foo', 'com.example.baz.Bar',
# 'org', 'org.example']
list(trie.iterbreadth())
# ['com', 'org', 'com.example', 'org.example', 'com.example.foo',
# 'com.example.bar', 'com.example.baz', 'com.example.baz.Foo',
# 'com.example.baz.Bar']
trie.remove('com')
list(trie)
# [('org', [('example', 'org.example')])]