Update app.py

app.py

@@ -4,6 +4,14 @@ from pix2tex.cli import LatexOCR
 import sympy as sp
 from sympy.parsing.latex import parse_latex
 import re
+import os
+
+# Trigger data download only once
+if not os.path.exists("dataset/train"):
+    print("🚀 Running data preparation scripts...")
+    os.system("python download_data.py")
+    os.system("python generate_csv.py")
+
 
 # Preprocessing for handwritten image
 def preprocess_handwritten_image(pil_img):