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| # Natural Language Toolkit (NLTK) Help | |
| # | |
| # Copyright (C) 2001-2023 NLTK Project | |
| # Authors: Steven Bird <[email protected]> | |
| # URL: <https://www.nltk.org/> | |
| # For license information, see LICENSE.TXT | |
| """ | |
| Provide structured access to documentation. | |
| """ | |
| import re | |
| from textwrap import wrap | |
| from nltk.data import load | |
| def brown_tagset(tagpattern=None): | |
| _format_tagset("brown_tagset", tagpattern) | |
| def claws5_tagset(tagpattern=None): | |
| _format_tagset("claws5_tagset", tagpattern) | |
| def upenn_tagset(tagpattern=None): | |
| _format_tagset("upenn_tagset", tagpattern) | |
| ##################################################################### | |
| # UTILITIES | |
| ##################################################################### | |
| def _print_entries(tags, tagdict): | |
| for tag in tags: | |
| entry = tagdict[tag] | |
| defn = [tag + ": " + entry[0]] | |
| examples = wrap( | |
| entry[1], width=75, initial_indent=" ", subsequent_indent=" " | |
| ) | |
| print("\n".join(defn + examples)) | |
| def _format_tagset(tagset, tagpattern=None): | |
| tagdict = load("help/tagsets/" + tagset + ".pickle") | |
| if not tagpattern: | |
| _print_entries(sorted(tagdict), tagdict) | |
| elif tagpattern in tagdict: | |
| _print_entries([tagpattern], tagdict) | |
| else: | |
| tagpattern = re.compile(tagpattern) | |
| tags = [tag for tag in sorted(tagdict) if tagpattern.match(tag)] | |
| if tags: | |
| _print_entries(tags, tagdict) | |
| else: | |
| print("No matching tags found.") | |
| if __name__ == "__main__": | |
| brown_tagset(r"NN.*") | |
| upenn_tagset(r".*\$") | |
| claws5_tagset("UNDEFINED") | |
| brown_tagset(r"NN") | |