Update app.py

app.py

@@ -1,8 +1,24 @@
 # app.py
 import re, spaces, gradio as gr, torch
 from transformers import AutoTokenizer, AutoModelForCausalLM
-import verifiers as vf
 
+import re, types
+try:
+    import verifiers as vf
+    _ = vf.XMLParser  # raises AttributeError on v0.0.0
+except (ImportError, AttributeError):
+    class _XMLParser:
+        def __init__(self, tags):
+            self.tags = tags
+        def get_format_str(self):
+            return "\n".join(f"<{t}>…</{t}>" for t in self.tags)
+        def extract(self, text):
+            out = {}
+            for tag in self.tags:
+                m = re.search(fr"<{tag}>(.*?)</{tag}>", text, re.S)
+                out[tag] = m.group(1).strip() if m else ""
+            return out
+    vf = types.SimpleNamespace(XMLParser=_XMLParser)  # drop-in shim
 
 MODEL_NAME = "loocorez/reverse-text-warmup"