Update app.py with numexpr patch (backup fix)

app.py

@@ -1,7 +1,30 @@
-# Fix HuggingFace Spaces environment variable issue
+# Fix HuggingFace Spaces OMP_NUM_THREADS issue by patching numexpr
 import os
-if os.environ.get('OMP_NUM_THREADS', '').endswith('m'):
-    os.environ['OMP_NUM_THREADS'] = '4'  # Set to 4 threads for T4 GPU
+import sys
+
+# Patch numexpr before it gets imported
+try:
+    import site
+    for site_dir in site.getsitepackages():
+        numexpr_utils = os.path.join(site_dir, 'numexpr', 'utils.py')
+        if os.path.exists(numexpr_utils):
+            with open(numexpr_utils, 'r') as f:
+                content = f.read()
+            
+            old_code = "requested_threads = int(os.environ['OMP_NUM_THREADS'])"
+            new_code = """try:
+                requested_threads = int(os.environ['OMP_NUM_THREADS'])
+            except (ValueError, TypeError):
+                requested_threads = 4"""
+            
+            if old_code in content and new_code not in content:
+                content = content.replace(old_code, new_code)
+                with open(numexpr_utils, 'w') as f:
+                    f.write(content)
+                print("✅ Patched numexpr for HuggingFace Spaces")
+            break
+except Exception as e:
+    print(f"Note: Could not patch numexpr: {e}")
 
 # import libraries
 import pandas as pd