Update app.py

app.py

@@ -202,7 +202,7 @@ if __name__ == "__main__":
 '''
 import zipfile
 import os
-
-if not os.path.exists("chroma_db"):
-    with zipfile.ZipFile("chroma_db.zip", 'r') as zip_ref:
-        zip_ref.extractall(".")
+if __name__ == "__main__":
+    if not os.path.exists("chroma_db"):
+        with zipfile.ZipFile("chroma_db.zip", 'r') as zip_ref:
+            zip_ref.extractall(".")