Create app/routes.py

app/routes.py

@@ -0,0 +1,12 @@
+from flask import Blueprint, render_template, request
+from .model import get_sentiment
+
+main = Blueprint('main', __name__)
+
+@main.route('/', methods=['GET', 'POST'])
+def index():
+    result = None
+    if request.method == 'POST':
+        user_input = request.form['text']
+        result = get_sentiment(user_input)
+    return render_template('index.html', result=result)