Capítulo 12: Mini Proyecto Integrador

¡Llegó el momento más emocionante! Es hora de construir tu obra maestra de Python combinando todas las herramientas que has dominado. Imagina que eres el encargado de un almacén moderno donde cada concepto aprendido se convierte en una pieza fundamental de un sistema completo y funcional.

🏗️ El Proyecto: Sistema de Gestión de Almacén

Vamos a crear un Sistema de Gestión de Almacén que use TODOS los conceptos que has aprendido hasta ahora:

¿Qué hará nuestro sistema?

Gestionar inventario con diccionarios y listas
Procesar ventas con funciones y control de flujo
Generar reportes guardándolos en archivos CSV
Validar datos con manejo de errores
Automatizar tareas como respaldos y alertas

🧰 Conceptos que integraremos

Variables y tipos de datos → Información de productos
Operadores → Cálculos de precios y totales
Estructuras de control → Lógica de negocio
Listas y diccionarios → Base de datos en memoria
Funciones → Operaciones reutilizables
Manejo de archivos → Persistencia de datos
Manejo de errores → Sistema robusto

Desarrollo del Proyecto

Paso 1: Estructura de Datos del Almacén

Primero, definamos cómo representaremos nuestro almacén usando las estructuras de datos que conocemos:

# Base de datos del almacén (usando diccionarios y listas)
inventario = {
    "PROD001": {
        "nombre": "Laptop HP",
        "precio": 15000.00,
        "stock": 5,
        "categoria": "Electrónicos",
        "proveedor": "TechCorp"
    },
    "PROD002": {
        "nombre": "Mouse Inalámbrico", 
        "precio": 350.00,
        "stock": 20,
        "categoria": "Accesorios",
        "proveedor": "GadgetCo"
    },
    "PROD003": {
        "nombre": "Monitor 24 pulgadas",
        "precio": 4500.00,
        "stock": 8,
        "categoria": "Electrónicos", 
        "proveedor": "ScreenTech"
    }
}

# Registro de ventas (lista de diccionarios)
ventas = []

# Configuración del sistema
configuracion = {
    "iva": 0.16,
    "descuento_mayoreo": 0.10,
    "stock_minimo": 5,
    "archivo_ventas": "ventas_almacen.csv",
    "archivo_inventario": "inventario_respaldo.json"
}

Paso 2: Funciones de Operación

Creemos las funciones principales que harán funcionar nuestro almacén:

import json
import csv
from datetime import datetime

def mostrar_inventario():
    """Muestra todo el inventario actual del almacén"""
    print("\n" + "="*50)
    print("<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#662113" d="M4 11v12.375c0 2.042 1.093 2.484 1.093 2.484l11.574 9.099C18.489 36.39 18 33.375 18 33.375V22L4 11z"/><path fill="#C1694F" d="M32 11v12.375c0 2.042-1.063 2.484-1.063 2.484s-9.767 7.667-11.588 9.099C17.526 36.39 18 33.375 18 33.375V22l14-11z"/><path fill="#D99E82" d="M19.289.5c-.753-.61-1.988-.61-2.742 0L4.565 10.029c-.754.61-.754 1.607 0 2.216l12.023 9.646c.754.609 1.989.609 2.743 0l12.104-9.73c.754-.609.754-1.606 0-2.216L19.289.5z"/><path fill="#D99E82" d="M18 35.75c-.552 0-1-.482-1-1.078V21.745c0-.596.448-1.078 1-1.078.553 0 1 .482 1 1.078v12.927c0 .596-.447 1.078-1 1.078z"/><path fill="#99AAB5" d="M28 18.836c0 1.104.104 1.646-1 2.442l-2.469 1.878c-1.104.797-1.531.113-1.531-.992v-2.961c0-.193-.026-.4-.278-.608C20.144 16.47 10.134 8.519 8.31 7.051l4.625-3.678c1.266.926 10.753 8.252 14.722 11.377.197.156.343.328.343.516v3.57z"/><path fill="#CCD6DD" d="M27.656 14.75C23.688 11.625 14.201 4.299 12.935 3.373l-1.721 1.368-2.904 2.31c1.825 1.468 11.834 9.419 14.412 11.544.151.125.217.25.248.371L27.903 15c-.06-.087-.146-.171-.247-.25z"/><path fill="#CCD6DD" d="M28 18.836v-3.57c0-.188-.146-.359-.344-.516-3.968-3.125-13.455-10.451-14.721-11.377l-2.073 1.649c3.393 2.669 12.481 9.681 14.86 11.573.256.204.278.415.278.608v4.836l1-.761c1.104-.797 1-1.338 1-2.442z"/><path fill="#E1E8ED" d="M27.656 14.75C23.688 11.625 14.201 4.299 12.935 3.373l-2.073 1.649c3.393 2.669 12.481 9.681 14.86 11.573.037.029.06.059.087.088L27.903 15c-.06-.087-.146-.171-.247-.25z"/></svg> INVENTARIO DEL ALMACÉN")
    print("="*50)
    
    for codigo, producto in inventario.items():
        print(f"\nCódigo: {codigo}")
        print(f"  Nombre: {producto['nombre']}")
        print(f"  Precio: ${producto['precio']:,.2f}")
        print(f"  Stock: {producto['stock']} unidades")
        print(f"  Categoría: {producto['categoria']}")
        
        # Alerta de stock bajo usando condicionales
        if producto['stock'] <= configuracion['stock_minimo']:
            print(f"  <svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M34.16 28.812L31.244 2.678C31.074 1.153 29.785 0 28.251 0H7.664C6.119 0 4.825 1.168 4.667 2.704l-2.67 26.108H34.16z"/><circle fill="#BE1931" cx="18.069" cy="14" r="9.366"/><path fill="#99AAB5" d="M35.521 29.18H.479L0 34c0 2 2 2 2 2h32s2 0 2-2l-.479-4.82z"/><path fill="#CCD6DD" d="M35.594 29.912l-.073-.732C35.38 28.442 34.751 28 34 28H2c-.751 0-1.38.442-1.521 1.18l-.073.732h35.188z"/><path fill="#EC9DAD" d="M29.647 13.63l-7.668-1.248 4.539-6.308c.107-.148.091-.354-.039-.484-.131-.129-.336-.146-.484-.039l-6.309 4.538-1.247-7.667c-.029-.181-.187-.314-.37-.314s-.341.133-.37.314l-1.248 7.667-6.308-4.538c-.149-.107-.353-.09-.484.039-.13.131-.146.335-.039.484l4.538 6.308L6.49 13.63c-.181.029-.314.186-.314.37s.133.341.314.37l7.668 1.248-4.538 6.308c-.107.149-.091.354.039.484.131.129.335.146.484.039l6.308-4.538 1.248 7.667c.029.182.187.314.37.314s.341-.134.37-.314l1.247-7.667 6.308 4.538c.148.106.354.09.484-.039.13-.131.146-.335.039-.484l-4.538-6.308 7.668-1.248c.182-.029.314-.187.314-.37s-.132-.341-.314-.37z"/></svg> ALERTA: Stock bajo!")

def buscar_producto(codigo):
    """Busca un producto por código"""
    if codigo in inventario:
        return inventario[codigo]
    else:
        return None

def calcular_precio_venta(codigo, cantidad):
    """Calcula el precio final de una venta con IVA y descuentos"""
    producto = buscar_producto(codigo)
    
    if not producto:
        return None, "Producto no encontrado"
    
    if cantidad > producto['stock']:
        return None, f"Stock insuficiente. Disponible: {producto['stock']}"
    
    # Cálculo del precio base
    precio_base = producto['precio'] * cantidad
    
    # Aplicar descuento por mayoreo (si compra 10 o más)
    if cantidad >= 10:
        descuento = precio_base * configuracion['descuento_mayoreo']
        precio_con_descuento = precio_base - descuento
        print(f"<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#FDD888" d="M31.898 23.938C31.3 17.32 28 14 28 14l-6-8h-8l-6 8s-1.419 1.433-2.567 4.275C3.444 18.935 2 20.789 2 23c0 1.448.625 2.742 1.609 3.655C3.233 27.357 3 28.147 3 29c0 1.958 1.136 3.636 2.775 4.456C7.058 35.378 8.772 36 10 36h16c1.379 0 3.373-.779 4.678-3.31C32.609 31.999 34 30.17 34 28c0-1.678-.834-3.154-2.102-4.062zM18 6c.55 0 1.058-.158 1.5-.416.443.258.951.416 1.5.416 1.657 0 4-2.344 4-4 0 0 0-2-2-2-.788 0-1 1-2 1s-1-1-3-1-2 1-3 1-1.211-1-2-1c-2 0-2 2-2 2 0 1.656 2.344 4 4 4 .549 0 1.057-.158 1.5-.416.443.258.951.416 1.5.416z"/><path fill="#BF6952" d="M24 6c0 .552-.447 1-1 1H13c-.552 0-1-.448-1-1s.448-1 1-1h10c.553 0 1 .448 1 1z"/><path fill="#67757F" d="M23.901 24.542c0-4.477-8.581-4.185-8.581-6.886 0-1.308 1.301-1.947 2.811-1.947 2.538 0 2.99 1.569 4.139 1.569.813 0 1.205-.493 1.205-1.046 0-1.284-2.024-2.256-3.965-2.592V12.4c0-.773-.65-1.4-1.454-1.4-.805 0-1.456.627-1.456 1.4v1.283c-2.116.463-3.937 1.875-3.937 4.176 0 4.299 8.579 4.125 8.579 7.145 0 1.047-1.178 2.093-3.111 2.093-2.901 0-3.867-1.889-5.045-1.889-.574 0-1.087.464-1.087 1.164 0 1.113 1.938 2.451 4.603 2.824l-.001.01v1.398c0 .772.652 1.4 1.456 1.4.804 0 1.455-.628 1.455-1.4v-1.398c0-.017-.008-.03-.009-.045 2.398-.43 4.398-1.932 4.398-4.619z"/></svg> Descuento por mayoreo aplicado: ${descuento:,.2f}")
    else:
        precio_con_descuento = precio_base
        descuento = 0
    
    # Calcular IVA
    iva = precio_con_descuento * configuracion['iva']
    precio_final = precio_con_descuento + iva
    
    return {
        'precio_base': precio_base,
        'descuento': descuento,
        'iva': iva,
        'precio_final': precio_final
    }, "OK"

def registrar_venta(codigo, cantidad, cliente="Cliente general"):
    """Registra una venta en el sistema"""
    try:
        # Calcular precios
        calculo, mensaje = calcular_precio_venta(codigo, cantidad)
        
        if calculo is None:
            print(f"<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M21.533 18.002L33.768 5.768c.976-.976.976-2.559 0-3.535-.977-.977-2.559-.977-3.535 0L17.998 14.467 5.764 2.233c-.976-.977-2.56-.977-3.535 0-.977.976-.977 2.559 0 3.535l12.234 12.234L2.201 30.265c-.977.977-.977 2.559 0 3.535.488.488 1.128.732 1.768.732s1.28-.244 1.768-.732l12.262-12.263 12.234 12.234c.488.488 1.128.732 1.768.732.64 0 1.279-.244 1.768-.732.976-.977.976-2.559 0-3.535L21.533 18.002z"/></svg> Error: {mensaje}")
            return False
        
        # Crear registro de venta
        venta = {
            'fecha': datetime.now().strftime('%Y-%m-%d %H:%M:%S'),
            'codigo_producto': codigo,
            'nombre_producto': inventario[codigo]['nombre'],
            'cantidad': cantidad,
            'precio_unitario': inventario[codigo]['precio'],
            'precio_base': calculo['precio_base'],
            'descuento': calculo['descuento'],
            'iva': calculo['iva'],
            'precio_final': calculo['precio_final'],
            'cliente': cliente
        }
        
        # Agregar a lista de ventas
        ventas.append(venta)
        
        # Actualizar stock
        inventario[codigo]['stock'] -= cantidad
        
        print(f"\n<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#77B255" d="M36 32c0 2.209-1.791 4-4 4H4c-2.209 0-4-1.791-4-4V4c0-2.209 1.791-4 4-4h28c2.209 0 4 1.791 4 4v28z"/><path fill="#FFF" d="M29.28 6.362c-1.156-.751-2.704-.422-3.458.736L14.936 23.877l-5.029-4.65c-1.014-.938-2.596-.875-3.533.138-.937 1.014-.875 2.596.139 3.533l7.209 6.666c.48.445 1.09.665 1.696.665.673 0 1.534-.282 2.099-1.139.332-.506 12.5-19.27 12.5-19.27.751-1.159.421-2.707-.737-3.458z"/></svg> Venta registrada exitosamente")
        print(f"Cliente: {cliente}")
        print(f"Producto: {venta['nombre_producto']}")
        print(f"Cantidad: {cantidad}")
        print(f"Total: ${calculo['precio_final']:,.2f}")
        
        return True
        
    except Exception as e:
        print(f"<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M21.533 18.002L33.768 5.768c.976-.976.976-2.559 0-3.535-.977-.977-2.559-.977-3.535 0L17.998 14.467 5.764 2.233c-.976-.977-2.56-.977-3.535 0-.977.976-.977 2.559 0 3.535l12.234 12.234L2.201 30.265c-.977.977-.977 2.559 0 3.535.488.488 1.128.732 1.768.732s1.28-.244 1.768-.732l12.262-12.263 12.234 12.234c.488.488 1.128.732 1.768.732.64 0 1.279-.244 1.768-.732.976-.977.976-2.559 0-3.535L21.533 18.002z"/></svg> Error al registrar venta: {e}")
        return False

def generar_reporte_ventas():
    """Genera un reporte completo de ventas"""
    if not ventas:
        print("<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#CCD6DD" d="M31 2H5C3.343 2 2 3.343 2 5v26c0 1.657 1.343 3 3 3h26c1.657 0 3-1.343 3-3V5c0-1.657-1.343-3-3-3z"/><path fill="#E1E8ED" d="M31 1H5C2.791 1 1 2.791 1 5v26c0 2.209 1.791 4 4 4h26c2.209 0 4-1.791 4-4V5c0-2.209-1.791-4-4-4zm0 2c1.103 0 2 .897 2 2v4h-6V3h4zm-4 16h6v6h-6v-6zm0-2v-6h6v6h-6zM25 3v6h-6V3h6zm-6 8h6v6h-6v-6zm0 8h6v6h-6v-6zM17 3v6h-6V3h6zm-6 8h6v6h-6v-6zm0 8h6v6h-6v-6zM3 5c0-1.103.897-2 2-2h4v6H3V5zm0 6h6v6H3v-6zm0 8h6v6H3v-6zm2 14c-1.103 0-2-.897-2-2v-4h6v6H5zm6 0v-6h6v6h-6zm8 0v-6h6v6h-6zm12 0h-4v-6h6v4c0 1.103-.897 2-2 2z"/><path fill="#5C913B" d="M13 33H7V16c0-1.104.896-2 2-2h2c1.104 0 2 .896 2 2v17z"/><path fill="#3B94D9" d="M29 33h-6V9c0-1.104.896-2 2-2h2c1.104 0 2 .896 2 2v24z"/><path fill="#DD2E44" d="M21 33h-6V23c0-1.104.896-2 2-2h2c1.104 0 2 .896 2 2v10z"/></svg> No hay ventas registradas")
        return
    
    print("\n" + "="*60)
    print("<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#CCD6DD" d="M31 2H5C3.343 2 2 3.343 2 5v26c0 1.657 1.343 3 3 3h26c1.657 0 3-1.343 3-3V5c0-1.657-1.343-3-3-3z"/><path fill="#E1E8ED" d="M31 1H5C2.791 1 1 2.791 1 5v26c0 2.209 1.791 4 4 4h26c2.209 0 4-1.791 4-4V5c0-2.209-1.791-4-4-4zm0 2c1.103 0 2 .897 2 2v4h-6V3h4zm-4 16h6v6h-6v-6zm0-2v-6h6v6h-6zM25 3v6h-6V3h6zm-6 8h6v6h-6v-6zm0 8h6v6h-6v-6zM17 3v6h-6V3h6zm-6 8h6v6h-6v-6zm0 8h6v6h-6v-6zM3 5c0-1.103.897-2 2-2h4v6H3V5zm0 6h6v6H3v-6zm0 8h6v6H3v-6zm2 14c-1.103 0-2-.897-2-2v-4h6v6H5zm6 0v-6h6v6h-6zm8 0v-6h6v6h-6zm12 0h-4v-6h6v4c0 1.103-.897 2-2 2z"/><path fill="#5C913B" d="M13 33H7V16c0-1.104.896-2 2-2h2c1.104 0 2 .896 2 2v17z"/><path fill="#3B94D9" d="M29 33h-6V9c0-1.104.896-2 2-2h2c1.104 0 2 .896 2 2v24z"/><path fill="#DD2E44" d="M21 33h-6V23c0-1.104.896-2 2-2h2c1.104 0 2 .896 2 2v10z"/></svg> REPORTE DE VENTAS")
    print("="*60)
    
    total_ventas = 0
    total_iva = 0
    productos_vendidos = {}
    
    # Procesar cada venta usando bucles
    for venta in ventas:
        total_ventas += venta['precio_final']
        total_iva += venta['iva']
        
        # Contabilizar productos vendidos
        codigo = venta['codigo_producto']
        if codigo in productos_vendidos:
            productos_vendidos[codigo] += venta['cantidad']
        else:
            productos_vendidos[codigo] = venta['cantidad']
    
    print(f"Total de ventas: {len(ventas)}")
    print(f"Ingresos totales: ${total_ventas:,.2f}")
    print(f"IVA recaudado: ${total_iva:,.2f}")
    
    print("\n<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#CCD6DD" d="M31 2H5C3.343 2 2 3.343 2 5v26c0 1.657 1.343 3 3 3h26c1.657 0 3-1.343 3-3V5c0-1.657-1.343-3-3-3z"/><path fill="#E1E8ED" d="M31 1H5C2.791 1 1 2.791 1 5v26c0 2.209 1.791 4 4 4h26c2.209 0 4-1.791 4-4V5c0-2.209-1.791-4-4-4zm0 2c1.103 0 2 .897 2 2v4h-6V3h4zm-4 16h6v6h-6v-6zm0-2v-6h6v6h-6zM25 3v6h-6V3h6zm-6 8h6v6h-6v-6zm0 8h6v6h-6v-6zM17 3v6h-6V3h6zm-6 8h6v6h-6v-6zm0 8h6v6h-6v-6zM3 5c0-1.103.897-2 2-2h4v6H3V5zm0 6h6v6H3v-6zm0 8h6v6H3v-6zm2 14c-1.103 0-2-.897-2-2v-4h6v6H5zm6 0v-6h6v6h-6zm8 0v-6h6v6h-6zm12 0h-4v-6h6v4c0 1.103-.897 2-2 2z"/><path fill="#DD2E44" d="M4.998 33c-.32 0-.645-.076-.946-.239-.973-.523-1.336-1.736-.813-2.709l7-13c.299-.557.845-.939 1.47-1.031.626-.092 1.258.118 1.705.565l6.076 6.076 9.738-18.59c.512-.978 1.721-1.357 2.699-.843.979.512 1.356 1.721.844 2.7l-11 21c-.295.564-.841.953-1.47 1.05-.627.091-1.266-.113-1.716-.563l-6.1-6.099-5.724 10.631C6.4 32.619 5.71 33 4.998 33z"/></svg> Productos más vendidos:")
    # Ordenar productos por cantidad vendida
    productos_ordenados = sorted(productos_vendidos.items(), 
                                key=lambda x: x[1], reverse=True)
    
    for codigo, cantidad in productos_ordenados:
        nombre = inventario[codigo]['nombre']
        print(f"  • {nombre}: {cantidad} unidades")

def exportar_ventas_csv():
    """Exporta las ventas a un archivo CSV"""
    try:
        with open(configuracion['archivo_ventas'], 'w', newline='', encoding='utf-8') as archivo:
            campos = ['fecha', 'codigo_producto', 'nombre_producto', 'cantidad', 
                     'precio_unitario', 'precio_base', 'descuento', 'iva', 
                     'precio_final', 'cliente']
            
            escritor = csv.DictWriter(archivo, fieldnames=campos)
            escritor.writeheader()
            
            for venta in ventas:
                escritor.writerow(venta)
        
        print(f"<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#77B255" d="M36 32c0 2.209-1.791 4-4 4H4c-2.209 0-4-1.791-4-4V4c0-2.209 1.791-4 4-4h28c2.209 0 4 1.791 4 4v28z"/><path fill="#FFF" d="M29.28 6.362c-1.156-.751-2.704-.422-3.458.736L14.936 23.877l-5.029-4.65c-1.014-.938-2.596-.875-3.533.138-.937 1.014-.875 2.596.139 3.533l7.209 6.666c.48.445 1.09.665 1.696.665.673 0 1.534-.282 2.099-1.139.332-.506 12.5-19.27 12.5-19.27.751-1.159.421-2.707-.737-3.458z"/></svg> Ventas exportadas a {configuracion['archivo_ventas']}")
        
    except Exception as e:
        print(f"<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M21.533 18.002L33.768 5.768c.976-.976.976-2.559 0-3.535-.977-.977-2.559-.977-3.535 0L17.998 14.467 5.764 2.233c-.976-.977-2.56-.977-3.535 0-.977.976-.977 2.559 0 3.535l12.234 12.234L2.201 30.265c-.977.977-.977 2.559 0 3.535.488.488 1.128.732 1.768.732s1.28-.244 1.768-.732l12.262-12.263 12.234 12.234c.488.488 1.128.732 1.768.732.64 0 1.279-.244 1.768-.732.976-.977.976-2.559 0-3.535L21.533 18.002z"/></svg> Error al exportar ventas: {e}")

def respaldar_inventario():
    """Crea un respaldo del inventario en JSON"""
    try:
        respaldo = {
            'fecha_respaldo': datetime.now().strftime('%Y-%m-%d %H:%M:%S'),
            'inventario': inventario,
            'configuracion': configuracion
        }
        
        with open(configuracion['archivo_inventario'], 'w', encoding='utf-8') as archivo:
            json.dump(respaldo, archivo, indent=2, ensure_ascii=False)
        
        print(f"<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#77B255" d="M36 32c0 2.209-1.791 4-4 4H4c-2.209 0-4-1.791-4-4V4c0-2.209 1.791-4 4-4h28c2.209 0 4 1.791 4 4v28z"/><path fill="#FFF" d="M29.28 6.362c-1.156-.751-2.704-.422-3.458.736L14.936 23.877l-5.029-4.65c-1.014-.938-2.596-.875-3.533.138-.937 1.014-.875 2.596.139 3.533l7.209 6.666c.48.445 1.09.665 1.696.665.673 0 1.534-.282 2.099-1.139.332-.506 12.5-19.27 12.5-19.27.751-1.159.421-2.707-.737-3.458z"/></svg> Inventario respaldado en {configuracion['archivo_inventario']}")
        
    except Exception as e:
        print(f"<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M21.533 18.002L33.768 5.768c.976-.976.976-2.559 0-3.535-.977-.977-2.559-.977-3.535 0L17.998 14.467 5.764 2.233c-.976-.977-2.56-.977-3.535 0-.977.976-.977 2.559 0 3.535l12.234 12.234L2.201 30.265c-.977.977-.977 2.559 0 3.535.488.488 1.128.732 1.768.732s1.28-.244 1.768-.732l12.262-12.263 12.234 12.234c.488.488 1.128.732 1.768.732.64 0 1.279-.244 1.768-.732.976-.977.976-2.559 0-3.535L21.533 18.002z"/></svg> Error al respaldar inventario: {e}")

def cargar_respaldo():
    """Carga un respaldo del inventario"""
    try:
        with open(configuracion['archivo_inventario'], 'r', encoding='utf-8') as archivo:
            respaldo = json.load(archivo)
            
        global inventario
        inventario = respaldo['inventario']
        
        print("<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#77B255" d="M36 32c0 2.209-1.791 4-4 4H4c-2.209 0-4-1.791-4-4V4c0-2.209 1.791-4 4-4h28c2.209 0 4 1.791 4 4v28z"/><path fill="#FFF" d="M29.28 6.362c-1.156-.751-2.704-.422-3.458.736L14.936 23.877l-5.029-4.65c-1.014-.938-2.596-.875-3.533.138-.937 1.014-.875 2.596.139 3.533l7.209 6.666c.48.445 1.09.665 1.696.665.673 0 1.534-.282 2.099-1.139.332-.506 12.5-19.27 12.5-19.27.751-1.159.421-2.707-.737-3.458z"/></svg> Respaldo cargado exitosamente")
        print(f"Fecha del respaldo: {respaldo['fecha_respaldo']}")
        
    except FileNotFoundError:
        print("<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M21.533 18.002L33.768 5.768c.976-.976.976-2.559 0-3.535-.977-.977-2.559-.977-3.535 0L17.998 14.467 5.764 2.233c-.976-.977-2.56-.977-3.535 0-.977.976-.977 2.559 0 3.535l12.234 12.234L2.201 30.265c-.977.977-.977 2.559 0 3.535.488.488 1.128.732 1.768.732s1.28-.244 1.768-.732l12.262-12.263 12.234 12.234c.488.488 1.128.732 1.768.732.64 0 1.279-.244 1.768-.732.976-.977.976-2.559 0-3.535L21.533 18.002z"/></svg> No se encontró archivo de respaldo")
    except Exception as e:
        print(f"<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M21.533 18.002L33.768 5.768c.976-.976.976-2.559 0-3.535-.977-.977-2.559-.977-3.535 0L17.998 14.467 5.764 2.233c-.976-.977-2.56-.977-3.535 0-.977.976-.977 2.559 0 3.535l12.234 12.234L2.201 30.265c-.977.977-.977 2.559 0 3.535.488.488 1.128.732 1.768.732s1.28-.244 1.768-.732l12.262-12.263 12.234 12.234c.488.488 1.128.732 1.768.732.64 0 1.279-.244 1.768-.732.976-.977.976-2.559 0-3.535L21.533 18.002z"/></svg> Error al cargar respaldo: {e}")

Paso 3: Sistema de Menús Interactivo

Ahora creemos la interfaz principal que permite al usuario interactuar con todas las funciones:

def mostrar_menu():
    """Muestra el menú principal del sistema"""
    print("\n" + "="*50)
    print("<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#AAB8C2" d="M17 34c0 1.104.896 2 2 2h14c1.104 0 2-.896 2-2V18c0-1.104-.896-2-2-2H19c-1.104 0-2 .896-2 2v16z"/><path fill="#292F33" d="M33 16H23v2h12c0-1.104-.896-2-2-2z"/><path fill="#3B88C3" d="M3 30h30v4H3z"/><path fill="#CCD6DD" d="M3 16c-1.104 0-2 .896-2 2v16c0 1.104.896 2 2 2h20V16H3z"/><path fill="#66757F" d="M3 16c-1.104 0-2 .896-2 2h22v-2H3z"/><path fill="#55ACEE" d="M3 20h4v4H3zm14 0h4v4h-4zm-7 0h4v4h-4z"/><path fill="#3B88C3" d="M29 20h4v4h-4zm-6 0h4v4h-4z"/><path fill="#55ACEE" d="M3 30h18v6H3z"/><path fill="#3B88C3" d="M7 30h10v6H7z"/><path fill="#DD2E44" d="M1 26h22v4H1z"/><path fill="#F4ABBA" d="M7 27h10v2H7z"/><path fill="#FFF" d="M9 27h6v2H9z"/><path fill="#A0041E" d="M23 26h12v4H23z"/><path fill="#292F33" d="M5 14h2v2H5zm12 0h2v2h-2z"/><path fill="#DD2E44" d="M21 12c0 1.104-.896 2-2 2H5c-1.104 0-2-.896-2-2V2c0-1.104.896-2 2-2h14c1.104 0 2 .896 2 2v10z"/><path d="M10.561 10.151c.616 0 1.093.28 1.093.925 0 .644-.477.924-1.009.924H5.967c-.617 0-1.093-.28-1.093-.924 0-.294.182-.546.322-.714C6.359 8.975 7.62 7.714 8.685 6.173c.252-.364.49-.798.49-1.303 0-.574-.434-1.079-1.009-1.079-1.611 0-.84 2.269-2.185 2.269-.672 0-1.022-.476-1.022-1.022 0-1.765 1.569-3.18 3.292-3.18 1.723 0 3.109 1.135 3.109 2.914 0 1.947-2.171 3.88-3.362 5.379h2.563zm2.363-.35c-.687 0-.981-.462-.981-.826 0-.309.112-.477.196-.617l3.138-5.687c.308-.56.7-.813 1.429-.813.812 0 1.611.519 1.611 1.793v4.3h.238c.546 0 .98.364.98.925 0 .56-.434.924-.98.924h-.238v1.19c0 .743-.295 1.093-1.009 1.093s-1.008-.35-1.008-1.093V9.8h-3.376zM16.3 4.044h-.028l-1.891 3.908H16.3V4.044z" fill="#FFF"/></svg> SISTEMA DE GESTIÓN DE ALMACÉN")
    print("="*50)
    print("1. <svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#662113" d="M4 11v12.375c0 2.042 1.093 2.484 1.093 2.484l11.574 9.099C18.489 36.39 18 33.375 18 33.375V22L4 11z"/><path fill="#C1694F" d="M32 11v12.375c0 2.042-1.063 2.484-1.063 2.484s-9.767 7.667-11.588 9.099C17.526 36.39 18 33.375 18 33.375V22l14-11z"/><path fill="#D99E82" d="M19.289.5c-.753-.61-1.988-.61-2.742 0L4.565 10.029c-.754.61-.754 1.607 0 2.216l12.023 9.646c.754.609 1.989.609 2.743 0l12.104-9.73c.754-.609.754-1.606 0-2.216L19.289.5z"/><path fill="#D99E82" d="M18 35.75c-.552 0-1-.482-1-1.078V21.745c0-.596.448-1.078 1-1.078.553 0 1 .482 1 1.078v12.927c0 .596-.447 1.078-1 1.078z"/><path fill="#99AAB5" d="M28 18.836c0 1.104.104 1.646-1 2.442l-2.469 1.878c-1.104.797-1.531.113-1.531-.992v-2.961c0-.193-.026-.4-.278-.608C20.144 16.47 10.134 8.519 8.31 7.051l4.625-3.678c1.266.926 10.753 8.252 14.722 11.377.197.156.343.328.343.516v3.57z"/><path fill="#CCD6DD" d="M27.656 14.75C23.688 11.625 14.201 4.299 12.935 3.373l-1.721 1.368-2.904 2.31c1.825 1.468 11.834 9.419 14.412 11.544.151.125.217.25.248.371L27.903 15c-.06-.087-.146-.171-.247-.25z"/><path fill="#CCD6DD" d="M28 18.836v-3.57c0-.188-.146-.359-.344-.516-3.968-3.125-13.455-10.451-14.721-11.377l-2.073 1.649c3.393 2.669 12.481 9.681 14.86 11.573.256.204.278.415.278.608v4.836l1-.761c1.104-.797 1-1.338 1-2.442z"/><path fill="#E1E8ED" d="M27.656 14.75C23.688 11.625 14.201 4.299 12.935 3.373l-2.073 1.649c3.393 2.669 12.481 9.681 14.86 11.573.037.029.06.059.087.088L27.903 15c-.06-.087-.146-.171-.247-.25z"/></svg> Ver inventario")
    print("2. <svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#9AAAB4" d="M27.388 24.642L24.56 27.47l-4.95-4.95 2.828-2.828z"/><path fill="#66757F" d="M34.683 29.11l-5.879-5.879c-.781-.781-2.047-.781-2.828 0l-2.828 2.828c-.781.781-.781 2.047 0 2.828l5.879 5.879c1.562 1.563 4.096 1.563 5.658 0 1.56-1.561 1.559-4.094-.002-5.656z"/><circle fill="#8899A6" cx="13.586" cy="13.669" r="13.5"/><circle fill="#BBDDF5" cx="13.586" cy="13.669" r="9.5"/></svg> Buscar producto")
    print("3. <svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#FDD888" d="M31.898 23.938C31.3 17.32 28 14 28 14l-6-8h-8l-6 8s-1.419 1.433-2.567 4.275C3.444 18.935 2 20.789 2 23c0 1.448.625 2.742 1.609 3.655C3.233 27.357 3 28.147 3 29c0 1.958 1.136 3.636 2.775 4.456C7.058 35.378 8.772 36 10 36h16c1.379 0 3.373-.779 4.678-3.31C32.609 31.999 34 30.17 34 28c0-1.678-.834-3.154-2.102-4.062zM18 6c.55 0 1.058-.158 1.5-.416.443.258.951.416 1.5.416 1.657 0 4-2.344 4-4 0 0 0-2-2-2-.788 0-1 1-2 1s-1-1-3-1-2 1-3 1-1.211-1-2-1c-2 0-2 2-2 2 0 1.656 2.344 4 4 4 .549 0 1.057-.158 1.5-.416.443.258.951.416 1.5.416z"/><path fill="#BF6952" d="M24 6c0 .552-.447 1-1 1H13c-.552 0-1-.448-1-1s.448-1 1-1h10c.553 0 1 .448 1 1z"/><path fill="#67757F" d="M23.901 24.542c0-4.477-8.581-4.185-8.581-6.886 0-1.308 1.301-1.947 2.811-1.947 2.538 0 2.99 1.569 4.139 1.569.813 0 1.205-.493 1.205-1.046 0-1.284-2.024-2.256-3.965-2.592V12.4c0-.773-.65-1.4-1.454-1.4-.805 0-1.456.627-1.456 1.4v1.283c-2.116.463-3.937 1.875-3.937 4.176 0 4.299 8.579 4.125 8.579 7.145 0 1.047-1.178 2.093-3.111 2.093-2.901 0-3.867-1.889-5.045-1.889-.574 0-1.087.464-1.087 1.164 0 1.113 1.938 2.451 4.603 2.824l-.001.01v1.398c0 .772.652 1.4 1.456 1.4.804 0 1.455-.628 1.455-1.4v-1.398c0-.017-.008-.03-.009-.045 2.398-.43 4.398-1.932 4.398-4.619z"/></svg> Registrar venta")
    print("4. <svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#CCD6DD" d="M31 2H5C3.343 2 2 3.343 2 5v26c0 1.657 1.343 3 3 3h26c1.657 0 3-1.343 3-3V5c0-1.657-1.343-3-3-3z"/><path fill="#E1E8ED" d="M31 1H5C2.791 1 1 2.791 1 5v26c0 2.209 1.791 4 4 4h26c2.209 0 4-1.791 4-4V5c0-2.209-1.791-4-4-4zm0 2c1.103 0 2 .897 2 2v4h-6V3h4zm-4 16h6v6h-6v-6zm0-2v-6h6v6h-6zM25 3v6h-6V3h6zm-6 8h6v6h-6v-6zm0 8h6v6h-6v-6zM17 3v6h-6V3h6zm-6 8h6v6h-6v-6zm0 8h6v6h-6v-6zM3 5c0-1.103.897-2 2-2h4v6H3V5zm0 6h6v6H3v-6zm0 8h6v6H3v-6zm2 14c-1.103 0-2-.897-2-2v-4h6v6H5zm6 0v-6h6v6h-6zm8 0v-6h6v6h-6zm12 0h-4v-6h6v4c0 1.103-.897 2-2 2z"/><path fill="#5C913B" d="M13 33H7V16c0-1.104.896-2 2-2h2c1.104 0 2 .896 2 2v17z"/><path fill="#3B94D9" d="M29 33h-6V9c0-1.104.896-2 2-2h2c1.104 0 2 .896 2 2v24z"/><path fill="#DD2E44" d="M21 33h-6V23c0-1.104.896-2 2-2h2c1.104 0 2 .896 2 2v10z"/></svg> Reporte de ventas")
    print("5. <svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#269" d="M0 29c0 2.209 1.791 4 4 4h24c2.209 0 4-1.791 4-4V12c0-2.209-1.791-4-4-4h-9c-3.562 0-3-5-8.438-5H4C1.791 3 0 4.791 0 7v22z"/><path fill="#55ACEE" d="M30 10h-6.562C18 10 18.562 15 15 15H6c-2.209 0-4 1.791-4 4v10c0 .553-.448 1-1 1s-1-.447-1-1c0 2.209 1.791 4 4 4h26c2.209 0 4-1.791 4-4V14c0-2.209-1.791-4-4-4z"/></svg> Exportar ventas a CSV")
    print("6. <svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#31373D" d="M4 36s-4 0-4-4V4s0-4 4-4h26c1 0 2 1 2 1l3 3s1 1 1 2v26s0 4-4 4H4z"/><path fill="#55ACEE" d="M5 19v-1s0-2 2-2h21c2 0 2 2 2 2v1H5z"/><path fill="#E1E8ED" d="M5 32.021V19h25v13s0 2-2 2H7c-2 0-2-1.979-2-1.979zM10 3s0-1 1-1h18c1.048 0 1 1 1 1v10s0 1-1 1H11s-1 0-1-1V3zm12 10h5V3h-5v10z"/></svg> Respaldar inventario")
    print("7. <svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#269" d="M0 29c0 2.209 1.791 4 4 4h24c2.209 0 4-1.791 4-4V12c0-2.209-1.791-4-4-4h-9c-3.562 0-3-5-8.438-5H4C1.791 3 0 4.791 0 7v22z"/><path fill="#55ACEE" d="M32.336 12h-6.562c-5.438 0-5.383 5-8.945 5h-9c-2.209 0-4.182 1.791-4.406 4l-.493 3.874L2.406 29l-.02-.002c-.116.607-.672.999-1.3.999-.643 0-1.106-.507-1.074-1.144C.01 28.903 0 28.95 0 29c0 2.004 1.478 3.648 3.4 3.939.177.038.371.061.6.061h26c2.209 0 4.182-1.791 4.406-4l1.523-13c.225-2.209-1.384-4-3.593-4z"/></svg> Cargar respaldo")
    print("8. <svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#31373D" d="M31 15H21V5c0-1.657-1.343-3-3-3s-3 1.343-3 3v10H5c-1.657 0-3 1.343-3 3s1.343 3 3 3h10v10c0 1.657 1.343 3 3 3s3-1.343 3-3V21h10c1.657 0 3-1.343 3-3s-1.343-3-3-3z"/></svg> Agregar producto")
    print("9. <svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#BF6952" d="M29 34c0 1.105-.895 2-2 2H9c-1.105 0-2-.895-2-2V2c0-1.105.895-2 2-2h18c1.105 0 2 .895 2 2v32z"/><circle fill="#FFAC33" cx="11" cy="18" r="1.5"/><path fill="#AC5640" d="M25 3c-.552 0-1 .448-1 1v9H11c-.552 0-1 .448-1 1s.448 1 1 1h14c.552 0 1-.448 1-1V4c0-.552-.448-1-1-1zm0 25c.552 0 1 .448 1 1v3c0 .552-.448 1-1 1H11c-.552 0-1-.448-1-1s.448-1 1-1h13v-2c0-.552.448-1 1-1z"/><path fill="#854836" d="M11 33c-.552 0-1-.448-1-1v-3c0-.552.448-1 1-1h14c.552 0 1 .448 1 1s-.448 1-1 1H12v2c0 .552-.448 1-1 1z"/><path fill="#AC5640" d="M25 21c.552 0 1 .448 1 1v3c0 .552-.448 1-1 1H11c-.552 0-1-.448-1-1s.448-1 1-1h13v-2c0-.552.448-1 1-1z"/><path fill="#854836" d="M11 26c-.552 0-1-.448-1-1v-3c0-.552.448-1 1-1h14c.552 0 1 .448 1 1s-.448 1-1 1H12v2c0 .552-.448 1-1 1zm0-11c-.552 0-1-.448-1-1V4c0-.552.448-1 1-1h14c.552 0 1 .448 1 1s-.448 1-1 1H12v9c0 .552-.448 1-1 1z"/></svg> Salir")
    print("-" * 50)

def agregar_producto():
    """Permite agregar un nuevo producto al inventario"""
    try:
        print("\n<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#31373D" d="M31 15H21V5c0-1.657-1.343-3-3-3s-3 1.343-3 3v10H5c-1.657 0-3 1.343-3 3s1.343 3 3 3h10v10c0 1.657 1.343 3 3 3s3-1.343 3-3V21h10c1.657 0 3-1.343 3-3s-1.343-3-3-3z"/></svg> AGREGAR NUEVO PRODUCTO")
        print("-" * 30)
        
        codigo = input("Código del producto: ").upper()
        
        # Validar que el código no exista
        if codigo in inventario:
            print("<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M21.533 18.002L33.768 5.768c.976-.976.976-2.559 0-3.535-.977-.977-2.559-.977-3.535 0L17.998 14.467 5.764 2.233c-.976-.977-2.56-.977-3.535 0-.977.976-.977 2.559 0 3.535l12.234 12.234L2.201 30.265c-.977.977-.977 2.559 0 3.535.488.488 1.128.732 1.768.732s1.28-.244 1.768-.732l12.262-12.263 12.234 12.234c.488.488 1.128.732 1.768.732.64 0 1.279-.244 1.768-.732.976-.977.976-2.559 0-3.535L21.533 18.002z"/></svg> Error: El código ya existe")
            return
        
        nombre = input("Nombre del producto: ")
        precio = float(input("Precio: $"))
        stock = int(input("Stock inicial: "))
        categoria = input("Categoría: ")
        proveedor = input("Proveedor: ")
        
        # Validaciones básicas
        if precio <= 0:
            print("<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M21.533 18.002L33.768 5.768c.976-.976.976-2.559 0-3.535-.977-.977-2.559-.977-3.535 0L17.998 14.467 5.764 2.233c-.976-.977-2.56-.977-3.535 0-.977.976-.977 2.559 0 3.535l12.234 12.234L2.201 30.265c-.977.977-.977 2.559 0 3.535.488.488 1.128.732 1.768.732s1.28-.244 1.768-.732l12.262-12.263 12.234 12.234c.488.488 1.128.732 1.768.732.64 0 1.279-.244 1.768-.732.976-.977.976-2.559 0-3.535L21.533 18.002z"/></svg> Error: El precio debe ser mayor a 0")
            return
            
        if stock < 0:
            print("<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M21.533 18.002L33.768 5.768c.976-.976.976-2.559 0-3.535-.977-.977-2.559-.977-3.535 0L17.998 14.467 5.764 2.233c-.976-.977-2.56-.977-3.535 0-.977.976-.977 2.559 0 3.535l12.234 12.234L2.201 30.265c-.977.977-.977 2.559 0 3.535.488.488 1.128.732 1.768.732s1.28-.244 1.768-.732l12.262-12.263 12.234 12.234c.488.488 1.128.732 1.768.732.64 0 1.279-.244 1.768-.732.976-.977.976-2.559 0-3.535L21.533 18.002z"/></svg> Error: El stock no puede ser negativo")
            return
        
        # Agregar al inventario
        inventario[codigo] = {
            "nombre": nombre,
            "precio": precio,
            "stock": stock,
            "categoria": categoria,
            "proveedor": proveedor
        }
        
        print(f"<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#77B255" d="M36 32c0 2.209-1.791 4-4 4H4c-2.209 0-4-1.791-4-4V4c0-2.209 1.791-4 4-4h28c2.209 0 4 1.791 4 4v28z"/><path fill="#FFF" d="M29.28 6.362c-1.156-.751-2.704-.422-3.458.736L14.936 23.877l-5.029-4.65c-1.014-.938-2.596-.875-3.533.138-.937 1.014-.875 2.596.139 3.533l7.209 6.666c.48.445 1.09.665 1.696.665.673 0 1.534-.282 2.099-1.139.332-.506 12.5-19.27 12.5-19.27.751-1.159.421-2.707-.737-3.458z"/></svg> Producto {nombre} agregado exitosamente")
        
    except ValueError:
        print("<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M21.533 18.002L33.768 5.768c.976-.976.976-2.559 0-3.535-.977-.977-2.559-.977-3.535 0L17.998 14.467 5.764 2.233c-.976-.977-2.56-.977-3.535 0-.977.976-.977 2.559 0 3.535l12.234 12.234L2.201 30.265c-.977.977-.977 2.559 0 3.535.488.488 1.128.732 1.768.732s1.28-.244 1.768-.732l12.262-12.263 12.234 12.234c.488.488 1.128.732 1.768.732.64 0 1.279-.244 1.768-.732.976-.977.976-2.559 0-3.535L21.533 18.002z"/></svg> Error: Ingresa valores numéricos válidos")
    except Exception as e:
        print(f"<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M21.533 18.002L33.768 5.768c.976-.976.976-2.559 0-3.535-.977-.977-2.559-.977-3.535 0L17.998 14.467 5.764 2.233c-.976-.977-2.56-.977-3.535 0-.977.976-.977 2.559 0 3.535l12.234 12.234L2.201 30.265c-.977.977-.977 2.559 0 3.535.488.488 1.128.732 1.768.732s1.28-.244 1.768-.732l12.262-12.263 12.234 12.234c.488.488 1.128.732 1.768.732.64 0 1.279-.244 1.768-.732.976-.977.976-2.559 0-3.535L21.533 18.002z"/></svg> Error inesperado: {e}")

def ejecutar_sistema():
    """Función principal que ejecuta el sistema completo"""
    print("<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M11.626 7.488c-.112.112-.197.247-.268.395l-.008-.008L.134 33.141l.011.011c-.208.403.14 1.223.853 1.937.713.713 1.533 1.061 1.936.853l.01.01L28.21 24.735l-.008-.009c.147-.07.282-.155.395-.269 1.562-1.562-.971-6.627-5.656-11.313-4.687-4.686-9.752-7.218-11.315-5.656z"/><path fill="#EA596E" d="M13 12L.416 32.506l-.282.635.011.011c-.208.403.14 1.223.853 1.937.232.232.473.408.709.557L17 17l-4-5z"/><path fill="#A0041E" d="M23.012 13.066c4.67 4.672 7.263 9.652 5.789 11.124-1.473 1.474-6.453-1.118-11.126-5.788-4.671-4.672-7.263-9.654-5.79-11.127 1.474-1.473 6.454 1.119 11.127 5.791z"/><path fill="#AA8DD8" d="M18.59 13.609c-.199.161-.459.245-.734.215-.868-.094-1.598-.396-2.109-.873-.541-.505-.808-1.183-.735-1.862.128-1.192 1.324-2.286 3.363-2.066.793.085 1.147-.17 1.159-.292.014-.121-.277-.446-1.07-.532-.868-.094-1.598-.396-2.11-.873-.541-.505-.809-1.183-.735-1.862.13-1.192 1.325-2.286 3.362-2.065.578.062.883-.057 1.012-.134.103-.063.144-.123.148-.158.012-.121-.275-.446-1.07-.532-.549-.06-.947-.552-.886-1.102.059-.549.55-.946 1.101-.886 2.037.219 2.973 1.542 2.844 2.735-.13 1.194-1.325 2.286-3.364 2.067-.578-.063-.88.057-1.01.134-.103.062-.145.123-.149.157-.013.122.276.446 1.071.532 2.037.22 2.973 1.542 2.844 2.735-.129 1.192-1.324 2.286-3.362 2.065-.578-.062-.882.058-1.012.134-.104.064-.144.124-.148.158-.013.121.276.446 1.07.532.548.06.947.553.886 1.102-.028.274-.167.511-.366.671z"/><path fill="#77B255" d="M30.661 22.857c1.973-.557 3.334.323 3.658 1.478.324 1.154-.378 2.615-2.35 3.17-.77.216-1.001.584-.97.701.034.118.425.312 1.193.095 1.972-.555 3.333.325 3.657 1.479.326 1.155-.378 2.614-2.351 3.17-.769.216-1.001.585-.967.702.033.117.423.311 1.192.095.53-.149 1.084.16 1.233.691.148.532-.161 1.084-.693 1.234-1.971.555-3.333-.323-3.659-1.479-.324-1.154.379-2.613 2.353-3.169.77-.217 1.001-.584.967-.702-.032-.117-.422-.312-1.19-.096-1.974.556-3.334-.322-3.659-1.479-.325-1.154.378-2.613 2.351-3.17.768-.215.999-.585.967-.701-.034-.118-.423-.312-1.192-.096-.532.15-1.083-.16-1.233-.691-.149-.53.161-1.082.693-1.232z"/><path fill="#AA8DD8" d="M23.001 20.16c-.294 0-.584-.129-.782-.375-.345-.432-.274-1.061.156-1.406.218-.175 5.418-4.259 12.767-3.208.547.078.927.584.849 1.131-.078.546-.58.93-1.132.848-6.493-.922-11.187 2.754-11.233 2.791-.186.148-.406.219-.625.219z"/><path fill="#77B255" d="M5.754 16c-.095 0-.192-.014-.288-.042-.529-.159-.829-.716-.67-1.245 1.133-3.773 2.16-9.794.898-11.364-.141-.178-.354-.353-.842-.316-.938.072-.849 2.051-.848 2.071.042.551-.372 1.031-.922 1.072-.559.034-1.031-.372-1.072-.923-.103-1.379.326-4.035 2.692-4.214 1.056-.08 1.933.287 2.552 1.057 2.371 2.951-.036 11.506-.542 13.192-.13.433-.528.712-.958.712z"/><circle fill="#5C913B" cx="25.5" cy="9.5" r="1.5"/><circle fill="#9266CC" cx="2" cy="18" r="2"/><circle fill="#5C913B" cx="32.5" cy="19.5" r="1.5"/><circle fill="#5C913B" cx="23.5" cy="31.5" r="1.5"/><circle fill="#FFCC4D" cx="28" cy="4" r="2"/><circle fill="#FFCC4D" cx="32.5" cy="8.5" r="1.5"/><circle fill="#FFCC4D" cx="29.5" cy="12.5" r="1.5"/><circle fill="#FFCC4D" cx="7.5" cy="23.5" r="1.5"/></svg> ¡Bienvenido al Sistema de Gestión de Almacén!")
    print("Este sistema integra todos los conceptos de Python que has aprendido.")
    
    while True:
        mostrar_menu()
        
        try:
            opcion = input("\nSelecciona una opción (1-9): ")
            
            if opcion == "1":
                mostrar_inventario()
                
            elif opcion == "2":
                codigo = input("Ingresa el código del producto: ").upper()
                producto = buscar_producto(codigo)
                if producto:
                    print(f"\n<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><circle fill="#DD2E44" cx="18" cy="18" r="18"/><circle fill="#FFF" cx="18" cy="18" r="13.5"/><circle fill="#DD2E44" cx="18" cy="18" r="10"/><circle fill="#FFF" cx="18" cy="18" r="6"/><circle fill="#DD2E44" cx="18" cy="18" r="3"/><path opacity=".2" d="M18.24 18.282l13.144 11.754s-2.647 3.376-7.89 5.109L17.579 18.42l.661-.138z"/><path fill="#FFAC33" d="M18.294 19c-.255 0-.509-.097-.704-.292-.389-.389-.389-1.018 0-1.407l.563-.563c.389-.389 1.018-.389 1.408 0 .388.389.388 1.018 0 1.407l-.564.563c-.194.195-.448.292-.703.292z"/><path fill="#55ACEE" d="M24.016 6.981c-.403 2.079 0 4.691 0 4.691l7.054-7.388c.291-1.454-.528-3.932-1.718-4.238-1.19-.306-4.079.803-5.336 6.935zm5.003 5.003c-2.079.403-4.691 0-4.691 0l7.388-7.054c1.454-.291 3.932.528 4.238 1.718.306 1.19-.803 4.079-6.935 5.336z"/><path fill="#3A87C2" d="M32.798 4.485L21.176 17.587c-.362.362-1.673.882-2.51.046-.836-.836-.419-2.08-.057-2.443L31.815 3.501s.676-.635 1.159-.152-.176 1.136-.176 1.136z"/></svg> Producto encontrado:")
                    print(f"Nombre: {producto['nombre']}")
                    print(f"Precio: ${producto['precio']:,.2f}")
                    print(f"Stock: {producto['stock']}")
                    print(f"Categoría: {producto['categoria']}")
                else:
                    print("<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M21.533 18.002L33.768 5.768c.976-.976.976-2.559 0-3.535-.977-.977-2.559-.977-3.535 0L17.998 14.467 5.764 2.233c-.976-.977-2.56-.977-3.535 0-.977.976-.977 2.559 0 3.535l12.234 12.234L2.201 30.265c-.977.977-.977 2.559 0 3.535.488.488 1.128.732 1.768.732s1.28-.244 1.768-.732l12.262-12.263 12.234 12.234c.488.488 1.128.732 1.768.732.64 0 1.279-.244 1.768-.732.976-.977.976-2.559 0-3.535L21.533 18.002z"/></svg> Producto no encontrado")
                    
            elif opcion == "3":
                codigo = input("Código del producto: ").upper()
                cantidad = int(input("Cantidad: "))
                cliente = input("Nombre del cliente (opcional): ") or "Cliente general"
                registrar_venta(codigo, cantidad, cliente)
                
            elif opcion == "4":
                generar_reporte_ventas()
                
            elif opcion == "5":
                exportar_ventas_csv()
                
            elif opcion == "6":
                respaldar_inventario()
                
            elif opcion == "7":
                cargar_respaldo()
                
            elif opcion == "8":
                agregar_producto()
                
            elif opcion == "9":
                print("\n<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#EF9645" d="M4.861 9.147c.94-.657 2.357-.531 3.201.166l-.968-1.407c-.779-1.111-.5-2.313.612-3.093 1.112-.777 4.263 1.312 4.263 1.312-.786-1.122-.639-2.544.483-3.331 1.122-.784 2.67-.513 3.456.611l10.42 14.72L25 31l-11.083-4.042L4.25 12.625c-.793-1.129-.519-2.686.611-3.478z"/><path fill="#FFDC5D" d="M2.695 17.336s-1.132-1.65.519-2.781c1.649-1.131 2.78.518 2.78.518l5.251 7.658c.181-.302.379-.6.6-.894L4.557 11.21s-1.131-1.649.519-2.78c1.649-1.131 2.78.518 2.78.518l6.855 9.997c.255-.208.516-.417.785-.622L7.549 6.732s-1.131-1.649.519-2.78c1.649-1.131 2.78.518 2.78.518l7.947 11.589c.292-.179.581-.334.871-.498L12.238 4.729s-1.131-1.649.518-2.78c1.649-1.131 2.78.518 2.78.518l7.854 11.454 1.194 1.742c-4.948 3.394-5.419 9.779-2.592 13.902.565.825 1.39.26 1.39.26-3.393-4.949-2.357-10.51 2.592-13.903L24.515 8.62s-.545-1.924 1.378-2.47c1.924-.545 2.47 1.379 2.47 1.379l1.685 5.004c.668 1.984 1.379 3.961 2.32 5.831 2.657 5.28 1.07 11.842-3.94 15.279-5.465 3.747-12.936 2.354-16.684-3.11L2.695 17.336z"/><g fill="#5DADEC"><path d="M12 32.042C8 32.042 3.958 28 3.958 24c0-.553-.405-1-.958-1s-1.042.447-1.042 1C1.958 30 6 34.042 12 34.042c.553 0 1-.489 1-1.042s-.447-.958-1-.958z"/><path d="M7 34c-3 0-5-2-5-5 0-.553-.447-1-1-1s-1 .447-1 1c0 4 3 7 7 7 .553 0 1-.447 1-1s-.447-1-1-1zM24 2c-.552 0-1 .448-1 1s.448 1 1 1c4 0 8 3.589 8 8 0 .552.448 1 1 1s1-.448 1-1c0-5.514-4-10-10-10z"/><path d="M29 .042c-.552 0-1 .406-1 .958s.448 1.042 1 1.042c3 0 4.958 2.225 4.958 4.958 0 .552.489 1 1.042 1s.958-.448.958-1C35.958 3.163 33 .042 29 .042z"/></g></svg> ¡Gracias por usar el Sistema de Gestión de Almacén!")
                print("¡Has completado exitosamente tu proyecto integrador!")
                break
                
            else:
                print("<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M21.533 18.002L33.768 5.768c.976-.976.976-2.559 0-3.535-.977-.977-2.559-.977-3.535 0L17.998 14.467 5.764 2.233c-.976-.977-2.56-.977-3.535 0-.977.976-.977 2.559 0 3.535l12.234 12.234L2.201 30.265c-.977.977-.977 2.559 0 3.535.488.488 1.128.732 1.768.732s1.28-.244 1.768-.732l12.262-12.263 12.234 12.234c.488.488 1.128.732 1.768.732.64 0 1.279-.244 1.768-.732.976-.977.976-2.559 0-3.535L21.533 18.002z"/></svg> Opción inválida. Selecciona del 1 al 9.")
                
        except ValueError:
            print("<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M21.533 18.002L33.768 5.768c.976-.976.976-2.559 0-3.535-.977-.977-2.559-.977-3.535 0L17.998 14.467 5.764 2.233c-.976-.977-2.56-.977-3.535 0-.977.976-.977 2.559 0 3.535l12.234 12.234L2.201 30.265c-.977.977-.977 2.559 0 3.535.488.488 1.128.732 1.768.732s1.28-.244 1.768-.732l12.262-12.263 12.234 12.234c.488.488 1.128.732 1.768.732.64 0 1.279-.244 1.768-.732.976-.977.976-2.559 0-3.535L21.533 18.002z"/></svg> Error: Ingresa un número válido")
        except KeyboardInterrupt:
            print("\n\n<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#EF9645" d="M4.861 9.147c.94-.657 2.357-.531 3.201.166l-.968-1.407c-.779-1.111-.5-2.313.612-3.093 1.112-.777 4.263 1.312 4.263 1.312-.786-1.122-.639-2.544.483-3.331 1.122-.784 2.67-.513 3.456.611l10.42 14.72L25 31l-11.083-4.042L4.25 12.625c-.793-1.129-.519-2.686.611-3.478z"/><path fill="#FFDC5D" d="M2.695 17.336s-1.132-1.65.519-2.781c1.649-1.131 2.78.518 2.78.518l5.251 7.658c.181-.302.379-.6.6-.894L4.557 11.21s-1.131-1.649.519-2.78c1.649-1.131 2.78.518 2.78.518l6.855 9.997c.255-.208.516-.417.785-.622L7.549 6.732s-1.131-1.649.519-2.78c1.649-1.131 2.78.518 2.78.518l7.947 11.589c.292-.179.581-.334.871-.498L12.238 4.729s-1.131-1.649.518-2.78c1.649-1.131 2.78.518 2.78.518l7.854 11.454 1.194 1.742c-4.948 3.394-5.419 9.779-2.592 13.902.565.825 1.39.26 1.39.26-3.393-4.949-2.357-10.51 2.592-13.903L24.515 8.62s-.545-1.924 1.378-2.47c1.924-.545 2.47 1.379 2.47 1.379l1.685 5.004c.668 1.984 1.379 3.961 2.32 5.831 2.657 5.28 1.07 11.842-3.94 15.279-5.465 3.747-12.936 2.354-16.684-3.11L2.695 17.336z"/><g fill="#5DADEC"><path d="M12 32.042C8 32.042 3.958 28 3.958 24c0-.553-.405-1-.958-1s-1.042.447-1.042 1C1.958 30 6 34.042 12 34.042c.553 0 1-.489 1-1.042s-.447-.958-1-.958z"/><path d="M7 34c-3 0-5-2-5-5 0-.553-.447-1-1-1s-1 .447-1 1c0 4 3 7 7 7 .553 0 1-.447 1-1s-.447-1-1-1zM24 2c-.552 0-1 .448-1 1s.448 1 1 1c4 0 8 3.589 8 8 0 .552.448 1 1 1s1-.448 1-1c0-5.514-4-10-10-10z"/><path d="M29 .042c-.552 0-1 .406-1 .958s.448 1.042 1 1.042c3 0 4.958 2.225 4.958 4.958 0 .552.489 1 1.042 1s.958-.448.958-1C35.958 3.163 33 .042 29 .042z"/></g></svg> Sistema cerrado por el usuario")
            break
        except Exception as e:
            print(f"<svg class="emoji-svg" style="display: inline-block; width: 1.2em; height: 1.2em; vertical-align: -0.1em;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#DD2E44" d="M21.533 18.002L33.768 5.768c.976-.976.976-2.559 0-3.535-.977-.977-2.559-.977-3.535 0L17.998 14.467 5.764 2.233c-.976-.977-2.56-.977-3.535 0-.977.976-.977 2.559 0 3.535l12.234 12.234L2.201 30.265c-.977.977-.977 2.559 0 3.535.488.488 1.128.732 1.768.732s1.28-.244 1.768-.732l12.262-12.263 12.234 12.234c.488.488 1.128.732 1.768.732.64 0 1.279-.244 1.768-.732.976-.977.976-2.559 0-3.535L21.533 18.002z"/></svg> Error inesperado: {e}")
            print("El sistema continuará funcionando...")
            
        # Pausa para que el usuario pueda leer los resultados
        input("\nPresiona Enter para continuar...")

# ¡Ejecutar el sistema!
if __name__ == "__main__":
    ejecutar_sistema()