first commit

app/database.py

@@ -0,0 +1,34 @@
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+from sqlalchemy.engine import URL
+from config import load_config
+
+
+ApplicationConfig = load_config()
+
+
+url = URL.create(
+    drivername="postgresql",
+    username=ApplicationConfig.POSTGRES_USERNAME,
+    password=ApplicationConfig.POSTGRES_PW,
+    host=ApplicationConfig.POSTGRES_SERVER,
+    database=ApplicationConfig.POSTGRES_DBNAME00,
+    port=ApplicationConfig.POSTGRES_PORT
+)
+
+engine = create_engine(url)
+
+Session = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+session = Session()
+
+Base = declarative_base()
+Base.metadata.create_all(engine)
+
+
+def get_db():
+    db = Session()
+    try:
+        yield db
+    finally:
+        db.close()