使用Python中的SQLite3数据库处理文本

Question

I have an SQLite3 database containing sentences of Japanese text and additional characters called furigana which help with the phonetic reading.

I have a function, remove_furigana, which can process a string and return the string without the furigana characters. However, when I pass this function the sentences pulled from my database it doesn't seem to have any effect. Could someone clarify for me what is going on here and point me in the direction of a solution?

def remove_furigana(content):
    furigana = False
    expression = ""
    for character in content:
        if character == '[':
            furigana = True
        elif character == ']':
            furigana = False
        elif not furigana:
            expression += character
    return expression.replace(" ", "")

def retrieve_article():
    c.execute('SELECT content FROM sentence WHERE article_id = "k10010770581000"')
    for row in c.fetchall():
        print(remove_furigana(row))

Answer 1

Python SQLite fetchall function returns a tuple consisted of the fields in that record. You need to send the content column to the function:

def retrieve_article():
    c.execute('SELECT content FROM sentence WHERE article_id = "k10010770581000"')
    for row in c.fetchall():
        print(remove_furigana(row[0]))

Alternatively, you can use row_factory to get dictionaries rather than tuples:

import sqlite3

def dict_factory(cursor, row):
    d = {}
    for idx, col in enumerate(cursor.description):
        d[col[0]] = row[idx]
    return d

con = sqlite3.connect(":memory:") con.row_factory = dict_factory

In that case, the fetchall result will be dictionary and you can access the content field as:

    print(remove_furigana(row['content']))