updated

requirements.txt

@@ -1,6 +1,7 @@
 # UI and OAuth
 gradio[oauth]
 requests
+pandas
 
 # LangChain and ecosystem
 langchain
@@ -15,3 +16,7 @@ accelerate  # Needed for many transformer-based models
 
 # Environment config
 python-dotenv
+
+# Tools dependencies
+duckduckgo-search  # Required for web_search tool
+pytz              # Required for get_current_time_in_timezone tool

tools.py

@@ -1,5 +1,7 @@
+import datetime
 import math
 
+import pytz
 from langchain_community.tools import DuckDuckGoSearchRun
 from langchain_core.tools import tool
 
@@ -196,12 +198,12 @@ def web_search(query: str) -> str:
 
 
 @tool
-def roman_calculator_converter(value1:int, value2:int, oper:str) -> str:
+def roman_calculator_converter(value1: int, value2: int, oper: str) -> str:
     """A tool that performs an operator on 2 numbers to calculate the result
     Args:
         value1: the first value
         value2: the second value
-        oper: operator for the calculation, like "add", "substract", "multiply", "divide"
+        oper: operator for the calculation, like "add", "subtract", "multiply", "divide"
     """
     roman_numerals = {
         1000: "M", 900: "CM", 500: "D", 400: "CD",
@@ -213,19 +215,25 @@ def roman_calculator_converter(value1:int, value2:int, oper:str) -> str:
     if oper == "add":
         result = value1 + value2
     elif oper == "subtract":
-        result = value2 - value1
+        result = value1 - value2  # Fixed: was value2 - value1
     elif oper == "divide":
-        result = value1 / value2
+        if value2 == 0:
+            return "Error: Division by zero is not allowed"
+        result = int(value1 / value2)  # Convert to int for Roman numerals
     elif oper == "multiply":
         result = value1 * value2
-
     else:
-        return "Unsupported operation. Please use 'add' or 'subtract'."
+        return "Unsupported operation. Please use 'add', 'subtract', 'multiply', or 'divide'."
+    
+    # Handle negative results
+    if result <= 0:
+        return f"Error: Roman numerals cannot represent zero or negative numbers. Result was: {result}"
     
     for value, numeral in roman_numerals.items():
         while result >= value:
             roman_string += numeral
             result -= value
+    
     return f"The result of {oper} on the values {value1} and {value2} is the Roman numeral: {roman_string}"