nltk.collections

module documentation
(source)

Undocumented

Class AbstractLazySequence An abstract base class for read-only sequences whose values are computed as needed. Lazy sequences act like tuples -- they can be indexed, sliced, and iterated over; but they may not be modified.
Class LazyConcatenation A lazy sequence formed by concatenating a list of lists. This underlying list of lists may itself be lazy. LazyConcatenation maintains an index that it uses to keep track of the relationship between offsets in the concatenated lists and offsets in the sublists.
Class LazyEnumerate A lazy sequence whose elements are tuples, each ontaining a count (from zero) and a value yielded by underlying sequence. LazyEnumerate is useful for obtaining an indexed list. The tuples are constructed lazily -- i...
Class LazyIteratorList Wraps an iterator, loading its elements on demand and making them subscriptable. __repr__ displays only the first few elements.
Class LazyMap A lazy sequence whose elements are formed by applying a given function to each element in one or more underlying lists. The function is applied lazily -- i.e., when you read a value from the list, LazyMap...
Class LazySubsequence A subsequence produced by slicing a lazy sequence. This slice keeps a reference to its source sequence, and generates its values by looking them up in the source sequence.
Class LazyZip A lazy sequence whose elements are tuples, each containing the i-th element from each of the argument sequences. The returned list is truncated in length to the length of the shortest argument sequence...
Class OrderedDict Undocumented
Class Trie A Trie implementation for strings