Update src/chat_langraph.py

src/chat_langraph.py

@@ -165,7 +165,7 @@ def plot_graph(expression: str, variable: str = "x", range_start: float = 0, ran
     Plot a graph from a dynamic expression.
 
     Args:
-        expression (str): Python expression as a function of variable (e.g., "2*x + 3").
+        expression (str): Python expression as a function of variable (e.g., "2*x + 3") (Allowed math library functions of python )
         variable (str): Variable name to use in expression (default: "x").
         range_start (float): Start of variable range.
         range_end (float): End of variable range.
@@ -202,7 +202,7 @@ def plot_graph(expression: str, variable: str = "x", range_start: float = 0, ran
         plt.savefig(filename)
         plt.close()
 
-        return f"Graph saved at {filename}"
+        return f"Filepath:{filename}"
 
     except Exception as e:
         return f"Error plotting graph: {e}"