First commit.

example_app/seed.py

@@ -0,0 +1,19 @@
+from .app import SessionLocal, engine
+from .models import Base, Author, Book
+
+def run():
+    Base.metadata.create_all(engine)
+    s = SessionLocal()
+    a1 = Author(name="Ursula K. Le Guin")
+    a2 = Author(name="Octavia E. Butler")
+    s.add_all([
+        a1, a2,
+        Book(title="The Left Hand of Darkness", author=a1),
+        Book(title="A Wizard of Earthsea", author=a1),
+        Book(title="Parable of the Sower", author=a2),
+    ])
+    s.commit()
+    s.close()
+
+if __name__ == "__main__":
+    run()