Python-сообщество

import xml.etree.ElementTree as ET
import sqlite3

conn = sqlite3.connect('trackdb.sqlite')
cur = conn.cursor()

# Make some fresh tables using executescript()
cur.executescript('''
DROP TABLE IF EXISTS Artist;
DROP TABLE IF EXISTS Album;
DROP TABLE IF EXISTS Track;
DROP TABLE IF EXISTS Genre;


CREATE TABLE Artist (
id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT UNIQUE,
name TEXT UNIQUE
);
CREATE TABLE Genre (
id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT UNIQUE,
name TEXT UNIQUE
);
CREATE TABLE Album (
id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT UNIQUE,
artist_id INTEGER,
title TEXT UNIQUE
);

CREATE TABLE Track (
id INTEGER NOT NULL PRIMARY KEY
AUTOINCREMENT UNIQUE,
title TEXT UNIQUE,
album_id INTEGER,
genre_id INTEGER,
len INTEGER, rating INTEGER, count INTEGER
);
''')


fname = raw_input('Enter file name: ‘)
if ( len(fname) < 1 ) : fname = ’Library.xml'

# <key>Track ID</key><integer>369</integer>
# <key>Name</key><string>Another One Bites The Dust</string>
# <key>Artist</key><string>Queen</string>
def lookup(d, key):
found = False
for child in d:
if found : return child.text
if child.tag == ‘key’ and child.text == key :
found = True
return None

stuff = ET.parse(fname)
all = stuff.findall('dict/dict/dict')
print ‘Dict count:’, len(all)
for entry in all:
if ( lookup(entry, ‘Track ID’) is None ) : continue

name = lookup(entry, ‘Name’)
artist = lookup(entry, ‘Artist’)
album = lookup(entry, ‘Album’)
count = lookup(entry, ‘Play Count’)
rating = lookup(entry, ‘Rating’)
length = lookup(entry, ‘Total Time’)
genre = lookup(entry, ‘Genre’)

if name is None or artist is None or album is None :
continue

print name, artist, album, count, rating, length

cur.execute('''INSERT OR IGNORE INTO Artist (name)
VALUES ( ? )''', ( artist, ) )
cur.execute('SELECT id FROM Artist WHERE name = ? ', (artist, ))
artist_id = cur.fetchone()

cur.execute('''INSERT OR IGNORE INTO Album (title, artist_id)
VALUES ( ?, ? )''', ( album, artist_id ) )
cur.execute('SELECT id FROM Album WHERE title = ? ', (album, ))
album_id = cur.fetchone()

cur.execute('''INSERT OR IGNORE INTO Genre (name)
VALUES ( ? )''', ( name, ) )
cur.execute('SELECT id FROM Genre WHERE name = ? ', (name, ))
genre_id = cur.fetchone()

cur.execute('''INSERT OR REPLACE INTO Track
(title, album_id, len, rating, count, genre )
VALUES ( ?, ?, ?, ?, ?, ? )''',
( name, album_id, length, rating, count, genre ) )
cur.execute('''SELECT Track.title, Artist.name, Album.title, Genre.name
FROM Track JOIN Genre JOIN Album JOIN Artist
ON Track.genre_id =Genre.ID and Track.album_id = Album.id
AND Album.artist_id = Artist.id
ORDER BY Artist.name LIMIT 3''')


conn.commit()


——————————————–
Traceback (most recent call last):
File “tracks.py”, line 91, in <module>
( name, album_id, length, rating, count, genre ) )
sqlite3.OperationalError: table Track has no column named genre

Прикреплённый файлы:
Library.xml.tar.gz (49,6 KБ)

Vlad_Gergert

sqlite3.OperationalError: table Track has no column named genre

Там genre_id при создании таблицы используется.

Отредактировано py.user.next (Фев. 12, 2016 07:52:46)

еще чуточку меня подтолкните.

Ну, вот в таблице задаётся имя поля genre_id

Vlad_Gergert

CREATE TABLE Track (
id INTEGER NOT NULL PRIMARY KEY
AUTOINCREMENT UNIQUE,
title TEXT UNIQUE,
album_id INTEGER,
genre_id INTEGER,
len INTEGER, rating INTEGER, count INTEGER
);

А вот используется имя поля genre

Vlad_Gergert

cur.execute('''INSERT OR REPLACE INTO Track
(title, album_id, len, rating, count, genre )
VALUES ( ?, ?, ?, ?, ?, ? )''',
( name, album_id, length, rating, count, genre ) )

Семен Семеныч ….