Create a Python GUI to manage tasks

Creating a Python GUI to manage tasks can be efficiently done using tkinter, the built-in GUI library in Python. Below is a complete example of a simple Task Manager app with functionalities to add, delete, and mark tasks as completed.

python
CopyEdit
import tkinter as tk
from tkinter import messagebox

class TaskManager:
    def __init__(self, root):
        self.root = root
        self.root.title("Task Manager")
        self.root.geometry("400x500")

        self.tasks = []

        # Title label
        self.title_label = tk.Label(root, text="Task Manager", font=("Helvetica", 18))
        self.title_label.pack(pady=10)

        # Frame for task entry and add button
        self.entry_frame = tk.Frame(root)
        self.entry_frame.pack(pady=10)

        self.task_entry = tk.Entry(self.entry_frame, width=30, font=("Helvetica", 14))
        self.task_entry.pack(side=tk.LEFT, padx=(0,10))

        self.add_btn = tk.Button(self.entry_frame, text="Add Task", command=self.add_task)
        self.add_btn.pack(side=tk.LEFT)

        # Listbox to show tasks
        self.task_listbox = tk.Listbox(root, font=("Helvetica", 14), width=40, height=15, selectmode=tk.SINGLE)
        self.task_listbox.pack(pady=10)

        # Scrollbar for the listbox
        self.scrollbar = tk.Scrollbar(root)
        self.scrollbar.pack(side=tk.RIGHT, fill=tk.Y)

        self.task_listbox.config(yscrollcommand=self.scrollbar.set)
        self.scrollbar.config(command=self.task_listbox.yview)

        # Buttons frame for delete and mark completed
        self.buttons_frame = tk.Frame(root)
        self.buttons_frame.pack(pady=10)

        self.delete_btn = tk.Button(self.buttons_frame, text="Delete Task", command=self.delete_task)
        self.delete_btn.pack(side=tk.LEFT, padx=5)

        self.complete_btn = tk.Button(self.buttons_frame, text="Mark Completed", command=self.mark_completed)
        self.complete_btn.pack(side=tk.LEFT, padx=5)

    def add_task(self):
        task_text = self.task_entry.get().strip()
        if task_text == "":
            messagebox.showwarning("Warning", "Please enter a task.")
            return
        self.tasks.append({"task": task_text, "completed": False})
        self.update_task_list()
        self.task_entry.delete(0, tk.END)

    def delete_task(self):
        selected_idx = self.task_listbox.curselection()
        if not selected_idx:
            messagebox.showwarning("Warning", "Please select a task to delete.")
            return
        index = selected_idx[0]
        del self.tasks[index]
        self.update_task_list()

    def mark_completed(self):
        selected_idx = self.task_listbox.curselection()
        if not selected_idx:
            messagebox.showwarning("Warning", "Please select a task to mark completed.")
            return
        index = selected_idx[0]
        self.tasks[index]["completed"] = True
        self.update_task_list()

    def update_task_list(self):
        self.task_listbox.delete(0, tk.END)
        for task in self.tasks:
            display_text = task["task"]
            if task["completed"]:
                display_text += " ✅"
            self.task_listbox.insert(tk.END, display_text)

if __name__ == "__main__":
    root = tk.Tk()
    app = TaskManager(root)
    root.mainloop()

Features:

• Add new tasks.

• Delete selected tasks.

• Mark tasks as completed (adds a checkmark).

• Scrollable list for tasks.

You can run this script directly if you have Python installed. Let me know if you’d like me to add features like saving tasks to a file or more!