nltk.chunk.tagstr2tree

nltk.chunk.tagstr2tree(s, chunk_label='NP', root_label='S', sep='/', source_tagset=None, target_tagset=None)[source]

Divide a string of bracketted tagged text into chunks and unchunked tokens, and produce a Tree. Chunks are marked by square brackets ([...]). Words are delimited by whitespace, and each word should have the form text/tag. Words that do not contain a slash are assigned a tag of None.

Parameters

  • s (str) – The string to be converted

  • chunk_label (str) – The label to use for chunk nodes

  • root_label (str) – The label to use for the root of the tree

Return type

Tree