diff --git a/python-ofensivo/09_bloc_notas/bloc_notas.py b/python-ofensivo/09_bloc_notas/bloc_notas.py
new file mode 100644
index 0000000..e5ae3d0
--- /dev/null
+++ b/python-ofensivo/09_bloc_notas/bloc_notas.py
@@ -0,0 +1,83 @@
+#!/usr/bin/env python3
+"""
+Editor de texto simple
+"""
+
+import tkinter as tk
+from tkinter import filedialog, messagebox
+
+
+class SimpleTextEditor:
+
+    def __init__(self, root):
+
+        self.root = root
+        self.text_area = tk.Text(self.root)
+        self.text_area.pack(expand=True, fill=tk.BOTH)
+        self.current_open_file = ""
+
+    def new_file(self):
+        self.text_area.delete("1.0", tk.END)
+        self.current_open_file = ""
+
+    def open_file(self):
+
+        filename = filedialog.askopenfilename(
+            title="Seleccione un archivo"
+        )
+
+        if filename:
+
+            self.text_area.delete("1.0", tk.END)
+
+            with open(filename, 'r') as file:
+
+                self.text_area.insert("1.0", file.read())
+
+            self.current_open_file = filename
+
+    def save_file(self):
+
+        if not self.current_open_file:
+
+            new_file_path = filedialog.asksaveasfilename(
+                title="Guardar archivo"
+            )
+
+            if new_file_path:
+
+                self.current_open_file = new_file_path
+
+            else:
+
+                return
+
+        with open(self.current_open_file, 'w') as file:
+
+            file.write(self.text_area.get("1.0", tk.END))
+
+    def quit_confirm(self):
+
+        if messagebox.askokcancel("Salir", "¿Está seguro que desea salir?"):
+
+            self.root.destroy()
+
+
+root = tk.Tk()
+root.geometry("900x700")
+root.title("Editor de texto simple")
+
+editor = SimpleTextEditor(root)
+
+menu_bar = tk.Menu(root)
+menu_options = tk.Menu(menu_bar, tearoff=0)
+
+menu_options.add_command(label="Nuevo", command=editor.new_file)
+menu_options.add_command(label="Abrir", command=editor.open_file)
+menu_options.add_command(label="Guardar", command=editor.save_file)
+menu_options.add_command(label="Salir", command=editor.quit_confirm)
+
+root.config(menu=menu_bar)
+menu_bar.add_cascade(label="Archivo", menu=menu_options)
+
+root.mainloop()