noun_phrase_parsetree.py

# https://gist.github.com/victoriastuart/c4e3230ade5266c9330a618be560b849
# https://www.reddit.com/r/LanguageTechnology/comments/b8xdb1/find_independent_clause_from_a_statement/

import nltk
from nltk.tag import pos_tag
import re

def getSentenceType(statement):
    sentenceParts = pos_tag(statement.split())
    return sentenceParts

def sentSegs(taggedSent, grammar, loops):
    cp = nltk.RegexpParser(grammar, loop=loops)
    result = cp.parse(taggedSent)
    return result

grammar = r"""
NP: {<DT|JJ|NN.*>+}
PP: {<IN><NP>}
VP: {<VB.*><NP|PP|CLAUSE>+$}
CLAUSE: {<NP><VP>}
"""

sentence = getSentenceType("He is smart, and he is punctual")
result = sentSegs(sentence, grammar, loops=1)


print(result)
'''
  (S
    He/PRP
    is/VBZ
    (NP smart,/JJ)
    and/CC
    he/PRP
    (VP is/VBZ (NP punctual/JJ)))
'''

print(result.pretty_print())
'''
                        S
    ____________________|______________________
    |      |      |      |        |             VP
    |      |      |      |        |        _____|_______
    |      |      |      |        NP      |             NP
    |      |      |      |        |       |             |
  He/PRP is/VBZ and/CC he/PRP smart,/JJ is/VBZ     punctual/JJ

  None
'''