app.py

# # app.py
# import gradio as gr

# # Define the calculator function
# def calculator(expression):
#     try:
#         result = eval(expression)
#         return result
#     except:
#         return "Invalid input"

# # Create Gradio interface
# iface = gr.Interface(
#     fn=calculator,
#     inputs=gr.Textbox(label="Enter a math expression (e.g., 5 + 3 * 2)"),
#     outputs=gr.Textbox(label="Result"),
#     title="🧮 Calculator",
#     description="This calculator can do addition (+), subtraction (-), multiplication (*), and division (/)."
# )

# # Launch the app
# iface.launch()

# app.py
import gradio as gr
import math

# ✅ Safe Evaluation Function
def safe_eval(expression):
    try:
        # Allowed functions and constants
        allowed_names = {k: v for k, v in math.__dict__.items() if not k.startswith("__")}
        allowed_names.update({
            "abs": abs,
            "round": round,
            "pow": pow,
        })

        result = eval(expression, {"__builtins__": None}, allowed_names)
        return f"✅ Result: {result}"
    except ZeroDivisionError:
        return "❌ Error: Division by zero"
    except Exception as e:
        return f"❌ Error: Invalid expression"

# 🎨 Gradio Interface
iface = gr.Interface(
    fn=safe_eval,
    inputs=gr.Textbox(
        label="📝 Math Expression",
        placeholder="e.g. 8 + 2, 10 / 5, 3 * 4, sqrt(16), log(10), 5**2"
    ),
    outputs=gr.Textbox(label="📊 Result"),
    title="🧮 AI-Powered Calculator",
    description=(
        "🔢 This calculator supports:\n"
        "- ➕ Addition (+)\n"
        "- ➖ Subtraction (-)\n"
        "- ✖️ Multiplication (*)\n"
        "- ➗ Division (/)\n"
        "- 🧠 Math functions: sqrt(), log(), sin(), cos(), tan(), abs(), round(), pow()\n\n"
        "⚠️ Type only valid math expressions. No natural language."
    )
)

# 🚀 Launch
if __name__ == "__main__":
    iface.launch()