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Only import sqlite3 when type checking 

Fixes: #7127
Signed-off-by: David Vo <david@vovo.id.au>
This commit is contained in:
David Vo 2020-03-27 12:26:55 +11:00 committed by Andrew Morgan
parent b5d0b038f4
commit 5bd2b27525
2 changed files with 6 additions and 2 deletions
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changelog.d/7155.bugfix Normal file
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Avoid importing `sqlite3` when using the postgres backend. Contributed by David Vo.

7
synapse/storage/engines/sqlite.py
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@ -12,14 +12,17 @@
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and # See the License for the specific language governing permissions and
# limitations under the License. # limitations under the License.
import sqlite3
import struct import struct
import threading import threading
import typing
from synapse.storage.engines import BaseDatabaseEngine from synapse.storage.engines import BaseDatabaseEngine
if typing.TYPE_CHECKING:
import sqlite3 # noqa: F401
class Sqlite3Engine(BaseDatabaseEngine[sqlite3.Connection]):
class Sqlite3Engine(BaseDatabaseEngine["sqlite3.Connection"]):
def __init__(self, database_module, database_config): def __init__(self, database_module, database_config):
super().__init__(database_module, database_config) super().__init__(database_module, database_config)