Create a To-Do List Manager using python

Step 1: Set up your development environment
Ensure you have Python installed on your computer. You can download Python from the official website: https://www.python.org/downloads/. You’ll also need a code editor or IDE, like Visual Studio Code, PyCharm, or Jupyter Notebook.

Step 2: Plan the structure of your To-Do List
Think about what features your To-Do List Manager should have. At a minimum, it should be able to:

Add tasks
View tasks
Mark tasks as done
Remove tasks

Step 3: Create a Python script
Start by creating a Python script (e.g., todo_manager.py). You can use a class-based approach for better organization. Here’s a simple example:


<span>class</span> <span>ToDoList</span><span>:</span>
    <span>def</span> <span>__init__</span><span>(</span><span>self</span><span>):</span>
        <span>self</span><span>.</span><span>tasks</span> <span>=</span> <span>[]</span>
    <span>def</span> <span>add_task</span><span>(</span><span>self</span><span>,</span> <span>task</span><span>):</span>
        <span>self</span><span>.</span><span>tasks</span><span>.</span><span>append</span><span>(</span><span>task</span><span>)</span>
    <span>def</span> <span>view_tasks</span><span>(</span><span>self</span><span>):</span>
        <span>for</span> <span>i</span><span>,</span> <span>task</span> <span>in</span> <span>enumerate</span><span>(</span><span>self</span><span>.</span><span>tasks</span><span>,</span> <span>start</span><span>=</span><span>1</span><span>):</span>
            <span>print</span><span>(</span><span>f</span><span>"</span><span>{</span><span>i</span><span>}</span><span>. </span><span>{</span><span>task</span><span>}</span><span>"</span><span>)</span>
    <span>def</span> <span>mark_task_as_done</span><span>(</span><span>self</span><span>,</span> <span>task_number</span><span>):</span>
        <span>if</span> <span>1</span> <span><=</span> <span>task_number</span> <span><=</span> <span>len</span><span>(</span><span>self</span><span>.</span><span>tasks</span><span>):</span>
            <span>self</span><span>.</span><span>tasks</span><span>[</span><span>task_number</span> <span>-</span> <span>1</span><span>]</span> <span>+=</span> <span>"</span><span> (Done)</span><span>"</span>
        <span>else</span><span>:</span>
            <span>print</span><span>(</span><span>"</span><span>Invalid task number</span><span>"</span><span>)</span>
    <span>def</span> <span>remove_task</span><span>(</span><span>self</span><span>,</span> <span>task_number</span><span>):</span>
        <span>if</span> <span>1</span> <span><=</span> <span>task_number</span> <span><=</span> <span>len</span><span>(</span><span>self</span><span>.</span><span>tasks</span><span>):</span>
            <span>del</span> <span>self</span><span>.</span><span>tasks</span><span>[</span><span>task_number</span> <span>-</span> <span>1</span><span>]</span>
        <span>else</span><span>:</span>
            <span>print</span><span>(</span><span>"</span><span>Invalid task number</span><span>"</span><span>)</span>
<span>def</span> <span>main</span><span>():</span>
    <span>todo_list</span> <span>=</span> <span>ToDoList</span><span>()</span>
    <span>while</span> <span>True</span><span>:</span>
        <span>print</span><span>(</span><span>"</span><span>\n</span><span>===== To-Do List Manager =====</span><span>"</span><span>)</span>
        <span>print</span><span>(</span><span>"</span><span>1. Add Task</span><span>"</span><span>)</span>
        <span>print</span><span>(</span><span>"</span><span>2. View Tasks</span><span>"</span><span>)</span>
        <span>print</span><span>(</span><span>"</span><span>3. Mark Task as Done</span><span>"</span><span>)</span>
        <span>print</span><span>(</span><span>"</span><span>4. Remove Task</span><span>"</span><span>)</span>
        <span>print</span><span>(</span><span>"</span><span>5. Quit</span><span>"</span><span>)</span>
        <span>choice</span> <span>=</span> <span>input</span><span>(</span><span>"</span><span>Enter your choice: </span><span>"</span><span>)</span>
        <span>if</span> <span>choice</span> <span>==</span> <span>"</span><span>1</span><span>"</span><span>:</span>
            <span>task</span> <span>=</span> <span>input</span><span>(</span><span>"</span><span>Enter the task: </span><span>"</span><span>)</span>
            <span>todo_list</span><span>.</span><span>add_task</span><span>(</span><span>task</span><span>)</span>
        <span>elif</span> <span>choice</span> <span>==</span> <span>"</span><span>2</span><span>"</span><span>:</span>
            <span>todo_list</span><span>.</span><span>view_tasks</span><span>()</span>
        <span>elif</span> <span>choice</span> <span>==</span> <span>"</span><span>3</span><span>"</span><span>:</span>
            <span>task_number</span> <span>=</span> <span>int</span><span>(</span><span>input</span><span>(</span><span>"</span><span>Enter the task number to mark as done: </span><span>"</span><span>))</span>
            <span>todo_list</span><span>.</span><span>mark_task_as_done</span><span>(</span><span>task_number</span><span>)</span>
        <span>elif</span> <span>choice</span> <span>==</span> <span>"</span><span>4</span><span>"</span><span>:</span>
            <span>task_number</span> <span>=</span> <span>int</span><span>(</span><span>input</span><span>(</span><span>"</span><span>Enter the task number to remove: </span><span>"</span><span>))</span>
            <span>todo_list</span><span>.</span><span>remove_task</span><span>(</span><span>task_number</span><span>)</span>
        <span>elif</span> <span>choice</span> <span>==</span> <span>"</span><span>5</span><span>"</span><span>:</span>
            <span>break</span>
        <span>else</span><span>:</span>
            <span>print</span><span>(</span><span>"</span><span>Invalid choice. Please try again.</span><span>"</span><span>)</span>
<span>if</span> <span>__name__</span> <span>==</span> <span>"</span><span>__main__</span><span>"</span><span>:</span>
    <span>main</span><span>()</span>
<span>class</span> <span>ToDoList</span><span>:</span>
    <span>def</span> <span>__init__</span><span>(</span><span>self</span><span>):</span>
        <span>self</span><span>.</span><span>tasks</span> <span>=</span> <span>[]</span>

    <span>def</span> <span>add_task</span><span>(</span><span>self</span><span>,</span> <span>task</span><span>):</span>
        <span>self</span><span>.</span><span>tasks</span><span>.</span><span>append</span><span>(</span><span>task</span><span>)</span>

    <span>def</span> <span>view_tasks</span><span>(</span><span>self</span><span>):</span>
        <span>for</span> <span>i</span><span>,</span> <span>task</span> <span>in</span> <span>enumerate</span><span>(</span><span>self</span><span>.</span><span>tasks</span><span>,</span> <span>start</span><span>=</span><span>1</span><span>):</span>
            <span>print</span><span>(</span><span>f</span><span>"</span><span>{</span><span>i</span><span>}</span><span>. </span><span>{</span><span>task</span><span>}</span><span>"</span><span>)</span>

    <span>def</span> <span>mark_task_as_done</span><span>(</span><span>self</span><span>,</span> <span>task_number</span><span>):</span>
        <span>if</span> <span>1</span> <span><=</span> <span>task_number</span> <span><=</span> <span>len</span><span>(</span><span>self</span><span>.</span><span>tasks</span><span>):</span>
            <span>self</span><span>.</span><span>tasks</span><span>[</span><span>task_number</span> <span>-</span> <span>1</span><span>]</span> <span>+=</span> <span>"</span><span> (Done)</span><span>"</span>
        <span>else</span><span>:</span>
            <span>print</span><span>(</span><span>"</span><span>Invalid task number</span><span>"</span><span>)</span>

    <span>def</span> <span>remove_task</span><span>(</span><span>self</span><span>,</span> <span>task_number</span><span>):</span>
        <span>if</span> <span>1</span> <span><=</span> <span>task_number</span> <span><=</span> <span>len</span><span>(</span><span>self</span><span>.</span><span>tasks</span><span>):</span>
            <span>del</span> <span>self</span><span>.</span><span>tasks</span><span>[</span><span>task_number</span> <span>-</span> <span>1</span><span>]</span>
        <span>else</span><span>:</span>
            <span>print</span><span>(</span><span>"</span><span>Invalid task number</span><span>"</span><span>)</span>

<span>def</span> <span>main</span><span>():</span>
    <span>todo_list</span> <span>=</span> <span>ToDoList</span><span>()</span>
    <span>while</span> <span>True</span><span>:</span>
        <span>print</span><span>(</span><span>"</span><span>\n</span><span>===== To-Do List Manager =====</span><span>"</span><span>)</span>
        <span>print</span><span>(</span><span>"</span><span>1. Add Task</span><span>"</span><span>)</span>
        <span>print</span><span>(</span><span>"</span><span>2. View Tasks</span><span>"</span><span>)</span>
        <span>print</span><span>(</span><span>"</span><span>3. Mark Task as Done</span><span>"</span><span>)</span>
        <span>print</span><span>(</span><span>"</span><span>4. Remove Task</span><span>"</span><span>)</span>
        <span>print</span><span>(</span><span>"</span><span>5. Quit</span><span>"</span><span>)</span>
        <span>choice</span> <span>=</span> <span>input</span><span>(</span><span>"</span><span>Enter your choice: </span><span>"</span><span>)</span>

        <span>if</span> <span>choice</span> <span>==</span> <span>"</span><span>1</span><span>"</span><span>:</span>
            <span>task</span> <span>=</span> <span>input</span><span>(</span><span>"</span><span>Enter the task: </span><span>"</span><span>)</span>
            <span>todo_list</span><span>.</span><span>add_task</span><span>(</span><span>task</span><span>)</span>
        <span>elif</span> <span>choice</span> <span>==</span> <span>"</span><span>2</span><span>"</span><span>:</span>
            <span>todo_list</span><span>.</span><span>view_tasks</span><span>()</span>
        <span>elif</span> <span>choice</span> <span>==</span> <span>"</span><span>3</span><span>"</span><span>:</span>
            <span>task_number</span> <span>=</span> <span>int</span><span>(</span><span>input</span><span>(</span><span>"</span><span>Enter the task number to mark as done: </span><span>"</span><span>))</span>
            <span>todo_list</span><span>.</span><span>mark_task_as_done</span><span>(</span><span>task_number</span><span>)</span>
        <span>elif</span> <span>choice</span> <span>==</span> <span>"</span><span>4</span><span>"</span><span>:</span>
            <span>task_number</span> <span>=</span> <span>int</span><span>(</span><span>input</span><span>(</span><span>"</span><span>Enter the task number to remove: </span><span>"</span><span>))</span>
            <span>todo_list</span><span>.</span><span>remove_task</span><span>(</span><span>task_number</span><span>)</span>
        <span>elif</span> <span>choice</span> <span>==</span> <span>"</span><span>5</span><span>"</span><span>:</span>
            <span>break</span>
        <span>else</span><span>:</span>
            <span>print</span><span>(</span><span>"</span><span>Invalid choice. Please try again.</span><span>"</span><span>)</span>

<span>if</span> <span>__name__</span> <span>==</span> <span>"</span><span>__main__</span><span>"</span><span>:</span>
    <span>main</span><span>()</span>
class ToDoList:
    def __init__(self):
        self.tasks = []

    def add_task(self, task):
        self.tasks.append(task)

    def view_tasks(self):
        for i, task in enumerate(self.tasks, start=1):
            print(f"{i}. {task}")

    def mark_task_as_done(self, task_number):
        if 1 <= task_number <= len(self.tasks):
            self.tasks[task_number - 1] += " (Done)"
        else:
            print("Invalid task number")

    def remove_task(self, task_number):
        if 1 <= task_number <= len(self.tasks):
            del self.tasks[task_number - 1]
        else:
            print("Invalid task number")

def main():
    todo_list = ToDoList()
    while True:
        print("\n===== To-Do List Manager =====")
        print("1. Add Task")
        print("2. View Tasks")
        print("3. Mark Task as Done")
        print("4. Remove Task")
        print("5. Quit")
        choice = input("Enter your choice: ")

        if choice == "1":
            task = input("Enter the task: ")
            todo_list.add_task(task)
        elif choice == "2":
            todo_list.view_tasks()
        elif choice == "3":
            task_number = int(input("Enter the task number to mark as done: "))
            todo_list.mark_task_as_done(task_number)
        elif choice == "4":
            task_number = int(input("Enter the task number to remove: "))
            todo_list.remove_task(task_number)
        elif choice == "5":
            break
        else:
            print("Invalid choice. Please try again.")

if __name__ == "__main__":
    main()

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Step 4: Run the script
Execute your Python script using the command line or your code editor.

原文链接：Create a To-Do List Manager using python

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