Fix python build

run.py

@@ -1,11 +1,5 @@
 #!/usr/bin/env python3
 from tmeister import core
-import sys
-import coverage
 
 if __name__ == '__main__':
-    # cov = coverage.Coverage()
-    # cov.start()
     core.main()
-    # cov.stop()
-    # cov.html_report()

tmeister/db.py

@@ -6,7 +6,6 @@
 from sqlalchemy.dialects.postgresql import ARRAY, TIMESTAMP
 import sqlalchemy as sa
 from psycopg2 import IntegrityError
-import asyncpg
 
 metadata = sa.MetaData()
 
@@ -134,6 +133,7 @@ def begin(self):
         return Transaction(conn)
 
     async def test(self):
+        import asyncpg
         await self._get_engine()
         query = self.toggles.select() \
             .where(db.toggles.c.env == 'bob2') \