Update app.py

app.py

@@ -1,9 +1,21 @@
 import gradio as gr
 import requests
+from tenacity import retry, wait_exponential, stop_after_attempt, retry_if_exception_type
+import json
 
+# Define custom exceptions for clarity
+class RateLimitException(Exception):
+    pass
+
+# Retry configuration: Retry up to 5 times with exponential backoff
+@retry(
+    wait=wait_exponential(multiplier=1, min=4, max=10),
+    stop=stop_after_attempt(5),
+    retry=retry_if_exception_type(RateLimitException)
+)
 def search_searx(query, instance_url='https://searx.org', categories='general'):
     """
-    Perform a search using the Searx API.
+    Perform a search using the Searx API with retry logic.
 
     :param query: The search query string.
     :param instance_url: The URL of the Searx instance.
@@ -20,9 +32,17 @@ def search_searx(query, instance_url='https://searx.org', categories='general'):
         'engines': '',        # Specify search engines, comma-separated
         'safesearch': '0'     # Safe search (0: off, 1: moderate, 2: strict)
     }
+    
+    headers = {
+        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) ' +
+                      'AppleWebKit/537.36 (KHTML, like Gecko) ' +
+                      'Chrome/58.0.3029.110 Safari/537.3'
+    }
 
     try:
-        response = requests.get(search_endpoint, params=params, timeout=10)
+        response = requests.get(search_endpoint, params=params, headers=headers, timeout=10)
+        if response.status_code == 429:
+            raise RateLimitException("Rate limit exceeded. Retrying...")
         response.raise_for_status()  # Raise an error for bad status codes
         data = response.json()
         
@@ -34,12 +54,18 @@ def search_searx(query, instance_url='https://searx.org', categories='general'):
             title = result.get('title', 'No Title')
             url = result.get('url', 'No URL')
             snippet = result.get('content', 'No Description')
-            formatted_results += f"**{idx}. {title}**\n[{url}]({url})\n{snippet}\n\n"
+            # Using Markdown link formatting
+            formatted_results += f"**{idx}. [{title}]({url})**\n{snippet}\n\n"
 
         return formatted_results
 
+    except RateLimitException as e:
+        # After retries, if still failing due to rate limits
+        return f"Rate limit exceeded. Please try again later.\nError: {e}"
     except requests.exceptions.RequestException as e:
         return f"An error occurred while searching: {e}"
+    except json.JSONDecodeError:
+        return "Failed to parse the response from the Searx instance."
 
 def create_gradio_interface():
     """