Update app.py

app.py

@@ -6,26 +6,19 @@ import yaml
 from tools.final_answer import FinalAnswerTool
 
 from Gradio_UI import GradioUI
-from cnlunardate import LunarDate
 
 # Below is an example of a tool that does nothing. Amaze us with your creativity !
 @tool
-def my_custom_tool(arg1: str, arg2: int = 0) -> str: #it's import to specify the return type
-    #Keep this format for the description / args / args description but feel free to modify the tool
-    # """A tool that does nothing yet 
-    # Args:
-    #     arg1: the first argument
-    #     arg2: the second argument
-    # """
-    # return "What magic will you build ?"
-    """A tool that converts a Gregorian date (format: YYYY-MM-DD) to the Chinese lunar calendar.
+def my_custom_tool(arg1: str, arg2: str) -> str:
+    """Counts how many times a specific letter appears in a given text.
     Args:
-        arg1: A Gregorian date string, e.g., '2025-06-02'
-        arg2: Unused placeholder argument
+        arg1: The input text to search.
+        arg2: The letter to count (e.g., 'a').
     """
-    year, month, day = map(int, arg1.split("-"))
-    lunar = LunarDate.from_solar_date(year, month, day)
-    return f"{arg1} 对应的农历是：{lunar.year}年{lunar.month}月{lunar.day}日"
+    if len(arg2) != 1 or not arg2.isalpha():
+        return "Error: arg2 must be a single alphabet letter."
+    count = arg1.count(arg2)
+    return f"The letter '{arg2}' appears {count} time(s) in the text."
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str: