Update app.py

app.py

@@ -0,0 +1,20 @@
+from flask import Flask, request, jsonify
+
+app = Flask(__name__)
+
+@app.route('/')
+def index():
+    return '''
+        <form action="/reverse" method="post">
+            Enter text: <input name="text" />
+            <input type="submit" />
+        </form>
+    '''
+
+@app.route('/reverse', methods=['POST'])
+def reverse():
+    text = request.form.get('text', '')
+    return f"<p>Reversed: {text[::-1]}</p><a href='/'>Try again</a>"
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=7860)