study_20241026/beginning-python-3ed-master/Chapter13/listing13-1.py

import sqlite3

def convert(value):
    if value.startswith('~'):
        return value.strip('~')
    if not value:
        value = '0'
    return float(value)

conn = sqlite3.connect('food.db')
curs = conn.cursor()

curs.execute('''
CREATE TABLE food (
    id         TEXT PRIMARY KEY,
    desc       TEXT,
    water      FLOAT,
    kcal       FLOAT,
    protein    FLOAT,
    fat        FLOAT,
    ash        FLOAT,
    carbs      FLOAT,
    fiber      FLOAT,
    sugar      FLOAT
)
''')

query = 'INSERT INTO food VALUES (?,?,?,?,?,?,?,?,?,?)'
field_count = 10

for line in open('ABBREV.txt'):
    fields = line.split('^')
    vals = [convert(f) for f in fields[:field_count]]
    curs.execute(query, vals)

conn.commit()
conn.close()