[PS] Update code from Python 2 to Python 3

Lesson-2/Objective-1-Solution/database_setup.py

@@ -0,0 +1,33 @@
+import os
+import sys
+from sqlalchemy import Column, ForeignKey, Integer, String
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import relationship
+from sqlalchemy import create_engine
+
+Base = declarative_base()
+
+
+class Restaurant(Base):
+    __tablename__ = 'restaurant'
+
+    id = Column(Integer, primary_key=True)
+    name = Column(String(250), nullable=False)
+
+
+class MenuItem(Base):
+    __tablename__ = 'menu_item'
+
+    name = Column(String(80), nullable=False)
+    id = Column(Integer, primary_key=True)
+    description = Column(String(250))
+    price = Column(String(8))
+    course = Column(String(250))
+    restaurant_id = Column(Integer, ForeignKey('restaurant.id'))
+    restaurant = relationship(Restaurant)
+
+
+engine = create_engine('sqlite:///restaurantmenu.db')
+
+
+Base.metadata.create_all(engine)