Create utils.py

utils.py

@@ -0,0 +1,13 @@
+import os
+
+def create_output_directory(directory="output"):
+    """Create output directory if it doesn't exist"""
+    if not os.path.exists(directory):
+        os.makedirs(directory)
+    return directory
+
+def allowed_file(filename):
+    """Check if file has allowed extension"""
+    ALLOWED_EXTENSIONS = {'png', 'jpg', 'jpeg'}
+    return '.' in filename and filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS
+