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Only import sqlite3 when type checking (#7155)

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Fixes: #7127
Signed-off-by: David Vo <david@vovo.id.au>
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David Vo 2020-03-28 00:20:00 +11:00 committed by GitHub
parent 7496d3d2f6
commit fbf0782c63
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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.

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synapse/storage/engines/sqlite.py
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# 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)