Added function to connect to database

server.py

@@ -1,9 +1,32 @@
+import json
 import sqlalchemy
 from flask import Flask
 from flask import render_template
 
 app = Flask(__name__)
 
+db_engine = {}
+db_metadata = {}
+
 @app.route('/')
 def index():
     return render_template('partsearch.html')
+
+def connect(user, password, db, host='localhost', port=5432):
+    '''Returns a connection and a metadata object'''
+    # We connect with the help of the PostgreSQL URL
+    url = 'postgresql://{}:{}@{}:{}/{}'
+    url = url.format(user, password, host, port, db)
+
+    # The return value of create_engine() is our connection object
+    con = sqlalchemy.create_engine(url, client_encoding='utf8')
+
+    # We then bind the connection to MetaData()
+    meta = sqlalchemy.MetaData(bind=con, reflect=True)
+
+    return con, meta
+
+if __name__ == '__main__':
+    with open('admin.json') as f:
+        postgres_credentials = json.load(f)
+    db_engine, db_metadata = connect(postgres_credentials['username'], postgres_credentials['password'], 'parts')