Update app.py

app.py

@@ -30,27 +30,29 @@ def generate_signature():
 def get_coordinates(location_name):
     prompt_template = PromptTemplate(
         input_variables=["location"],
-        template="What are the exact latitude and longitude of {location}? Please provide numeric values only."
+        template="What are the exact latitude and longitude of {location}? Please provide the values in decimal degrees."
     )
     
     llm = ChatOpenAI(model="gpt-4", openai_api_key=openai.api_key)
     chain = LLMChain(llm=llm, prompt=prompt_template)
     
-    # Attempt to get a valid response multiple times if necessary
-    for attempt in range(3):  # Let's try up to three times
-        result = chain.run(location=location_name).strip()
-        coordinates = result.split(",")
-        try:
-            # Try to convert received strings into float values
-            lat = float(coordinates[0])
-            lon = float(coordinates[1])
-            return lat, lon
-        except ValueError:
-            st.warning(f"Attempt {attempt+1}: Unable to obtain valid coordinates. Received: '{result}'. Retrying...")
-    
-    # If after several attempts no valid coordinates were received, inform the user
-    st.error("Failed to obtain valid geographical coordinates from the AI model. Please check the location name or try again later.")
-    return None, None
+    result = chain.run(location=location_name).strip()
+    # This line is new: processing the response to handle directional letters
+    try:
+        # Clean the result to remove degrees symbol and directional letters, then split by comma
+        cleaned_result = result.replace('°', '').replace(' N', '').replace(' S', '').replace(' E', '').replace(' W', '')
+        coordinates = cleaned_result.split(',')
+        # Convert to float, and handle negative values for southern and western hemispheres
+        latitude = float(coordinates[0].strip())
+        longitude = float(coordinates[1].strip())
+        if 'S' in result.split(',')[0]:
+            latitude = -latitude
+        if 'W' in result.split(',')[1]:
+            longitude = -longitude
+        return latitude, longitude
+    except ValueError as e:
+        st.error(f"Unable to parse coordinates from the AI's response: '{result}'. Error: {str(e)}")
+        return None, None
 
 # Function to make the POST request to the Hotelbeds API and handle pagination
 def fetch_activities(latitude, longitude, from_date, to_date, language="en", paxes=[{"age": 5}, {"age": 70}], order="DEFAULT"):