Python SQLite: database is locked

Question

I\'m trying this code:

import sqlite

connection = sqlite.connect(\'cache.db\')
cur = connection.cursor()
cur.execute(\'\'\'create table item
  (id integer p         


        

Answer 1

I had the same problem: sqlite3.IntegrityError

As mentioned in many answers, the problem is that a connection has not been properly closed.

In my case I had try except blocks. I was accessing the database in the try block and when an exception was raised I wanted to do something else in the except block.

try:
    conn = sqlite3.connect(path)
    cur = conn.cursor()
    cur.execute('''INSERT INTO ...''')
except:
    conn = sqlite3.connect(path)
    cur = conn.cursor()
    cur.execute('''DELETE FROM ...''')
    cur.execute('''INSERT INTO ...''')

However, when the exception was being raised the connection from the try block had not been closed.

I solved it using with statements inside the blocks.

try:
    with sqlite3.connect(path) as conn:
        cur = conn.cursor()
        cur.execute('''INSERT INTO ...''')
except:
    with sqlite3.connect(path) as conn:
        cur = conn.cursor()
        cur.execute('''DELETE FROM ...''')
        cur.execute('''INSERT INTO ...''')