import gradio as gr

def calculator(num1, operation, num2):
    if operation == "add":
        return num1 + num2
    elif operation == "subtract":
        return num1 - num2
    elif operation == "multiply":
        return num1 * num2
    elif operation == "divide":
        if num2 == 0:
            raise gr.Error("No se puede dividir por cero!")
        return num1 / num2

demo = gr.Interface(
    calculator,
    [
        "number", 
        gr.Radio(["add", "subtract", "multiply", "divide"]),
        "number"
    ],
    "number",
    examples=[
        [5, "add", 3],
        [4, "divide", 2],
        [-4, "multiply", 2.5],
        [0, "subtract", 1.2],
    ],
    title="Calculadora basica",
    description="Aquí hay una calculadora basica. Le permite calcular sumas, restas, multiplicaciones y divisiones; como $2*3=6$",
    article= 'Autor: <a href=\"https://huggingface.co/Antonio49\">Antonio Fernández</a> de <a href=\"https://saturdays.ai/\">SaturdaysAI</a>. Aplicación desarrollada con fines docentes',
  
)
if __name__ == "__main__":
    demo.launch()