tut3.py

import os
from polyglotdb import CorpusContext

# corpus_name = 'tutorial'
# export_path = './results/tutorial_3_output.csv'
corpus_name = 'tutorial-subset'
export_path = './results/tutorial_3_subset_output.csv'

with CorpusContext(corpus_name) as c:
    q = c.query_graph(c.syllable)

    q = q.filter(c.syllable.stress == '1')
    q = q.filter(c.syllable.begin == c.syllable.word.begin)
    q = q.filter(c.syllable.word.end == c.syllable.word.utterance.end)

    q = q.columns(c.syllable.label.column_name('syllable'),
                    c.syllable.duration.column_name('syllable_duration'),
                    c.syllable.word.label.column_name('word'),
                    c.syllable.word.begin.column_name('word_begin'),
                    c.syllable.word.end.column_name('word_end'),
                    c.syllable.word.num_syllables.column_name('word_num_syllables'),
                    c.syllable.word.stress_pattern.column_name('word_stress_pattern'),
                    c.syllable.word.utterance.speech_rate.column_name('utterance_speech_rate'),
                    c.syllable.speaker.name.column_name('speaker'),
                    c.syllable.discourse.name.column_name('file'),
                    )
    print(f"Exporting full query to {export_path}")
    # Optional: Use order_by to enforce ordering on the output for easier comparison with the sample output.
    q = q.order_by(c.syllable.label)
    q.to_csv(export_path)

    print("Preview query limited to 10 data points...")
    q = q.limit(10)
    results = q.all()
    print(results)