sqlalchemy and SQLite shared cache

Question

SQLite supports a \"shared cache\" for :memory: databases when they are opened with a special URI (according to sqlite.org):

[T]he same in-me

Answer 1

You should avoid passing uri=True on older Python versions and the problem will be fixed:

import sqlite3
import sys

import sqlalchemy


DB_URI = 'file::memory:?cache=shared'
PY2 = sys.version_info.major == 2
if PY2:
    params = {}
else:
    params = {'uri': True}

creator = lambda: sqlite3.connect(DB_URI, **params)

engine = sqlalchemy.create_engine('sqlite:///:memory:', creator=creator)
engine.connect()