Python 将任务编号添加到文本文件的简单方法

有人可以告诉我一个简单的方法，添加任务编号到我的输出文本文件。我所需要的只是一种简单的方法，每次添加新任务时，代码应该循环并在每次创建新任务时向描述中添加一个新编号。我还需要能够通过输入任务编号在代码的后面访问任务

当前输出到文本文件：

分配给任务的用户：
管理
任务名称：
慢跑
任务说明：
慢跑
任务截止日期：
2020-02-08
分配日期：
2020-02-07
完成的任务：
不

请求的输出：

分配给任务1的用户：
管理
任务名称：
慢跑
任务说明：
慢跑
任务截止日期：
2020-02-08
分配日期：
2020-02-07
完成的任务：
不

我当前的代码：

def add_task():
 if menu == "a" or menu == "A":
    with open( 'user.txt' ) as fin :
        usernames = [i.split(',')[0] for i in fin.readlines() if len(i) > 3]
        task = input ("Please enter the username of the person the task is assigned to.\n")
    while task not in usernames :
        task = input("Username not registered. Please enter a valid username.\n")

    else:
        task_title = input("Please enter the title of the task.\n")
        task_description = input("Please enter the task description.\n")
        task_due = input("Please input the due date of the task. (yyyy-mm-dd)\n")
        date = datetime.date.today()
        task_completed = False
        if task_completed == False:
            task_completed = "No"
        else:
            task_completed = ("Yes")
        with open('tasks.txt', 'a') as task1:
            task1.write("\nUser assigned to task:\n" + task + "\nTask Title :"  + "\n" + task_title + "\n" + "Task Description:\n" + task_description + "\n" + "Task Due Date:\n" + task_due + "\n" + "Date Assigned:\n" + str(date) + "\n" + "Task Completed:\n" + task_completed + "\n")
            print("The new assigned task has been saved")
add_task()

请尝试以下代码：

def add_task(count):
 if menu == "a" or menu == "A":
    with open( 'user.txt' ) as fin :    
        usernames = [i.split(',')[0] for i in fin.readlines() if len(i) > 3]
        task = input ("Please enter the username of the person the task is assigned to.\n")
    while task not in usernames :
        task = input("Username not registered. Please enter a valid username.\n")

    else:
        task_title = input("Please enter the title of the task.\n")
        task_description = input("Please enter the task description.\n")
        task_due = input("Please input the due date of the task. (yyyy-mm-dd)\n")
        date = datetime.date.today()
        task_completed = False
        if task_completed == False:
            task_completed = "No"
        else:
            task_completed = ("Yes")
        with open('tasks.txt', 'a') as task1:
            count=count+1
            task1.write("\nUser assigned to task: "+count+"\n" + task + "\nTask Title :"  + "\n" + task_title + "\n" + "Task Description:\n" + task_description + "\n" + "Task Due Date:\n" + task_due + "\n" + "Date Assigned:\n" + str(date) + "\n" + "Task Completed:\n" + task_completed + "\n")
            print("The new assigned task has been saved")
count = 0
add_task(count)

---

代码似乎正在运行，但只添加了数字1作为任务编号。当我保存下一个任务时，任务仍然显示为1，而不是2。更新答案后，请立即重试。前面我在add_task（）中设置了count=0，这是在重置计数器。非常感谢您的帮助。获取另一个错误：count=count+1。'分配前引用的计数非常感谢您提供的所有帮助，但仍将这两项任务保存为任务1。第二个任务未显示任务2