added a new tool to calculate the days between two days

app.py

@@ -18,6 +18,28 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
     """
     return "What magic will you build ?"
 
+@tool
+def days_between_dates(start_date: str, end_date: str) -> int:
+    """A tool that calculates the number of days between two given dates.
+    
+    Args:
+        start_date: The start date in 'YYYY-MM-DD' format.
+        end_date: The end date in 'YYYY-MM-DD' format.
+
+    Returns:
+        The number of days between the two dates.
+    """
+
+    try:
+        start = datetime.datetime.strptime(start_date, "%Y-%m-%d")
+        end = datetime.datetime.strptime(end_date, "%Y-%m-%d")
+        difference = (end - start).days
+        return abs(difference)
+    except ValueError:
+        print("Error: Please provide dates in the correct 'YYYY-MM-DD' format.")
+        return None
+
+
 @tool
 def get_current_time_in_timezone(timezone: str) -> str:
     """A tool that fetches the current local time in a specified timezone.
@@ -55,7 +77,7 @@ with open("prompts.yaml", 'r') as stream:
     
 agent = CodeAgent(
     model=model,
-    tools=[final_answer], ## add your tools here (don't remove final answer)
+    tools=[final_answer, days_between_dates], ## add your tools here (don't remove final answer)
     max_steps=6,
     verbosity_level=1,
     grammar=None,