python 需求排序管理系统

好的，一个简单的需求排序管理系统可以包含以下功能：

1. 添加需求：用户可以添加新的需求，包括需求名称、需求描述、优先级等信息。
2. 查看需求列表：用户可以查看所有的需求，并按照不同的排序方式进行排序，如按照优先级、创建时间等排序。
3. 修改需求：用户可以修改已有的需求信息。
4. 删除需求：用户可以删除已有的需求。
5. 保存和加载：系统可以将所有需求保存到本地文件中，并在下次打开时自动加载之前保存的需求。

以下是一个简单的 Python 实现：

import json
import time

class Requirement:

    def __init__(self, name, description, priority):
        self.name = name
        self.description = description
        self.priority = priority
        self.created_time = time.time()

    def __str__(self):
        return f'Name: {self.name}\nDescription: {self.description}\nPriority: {self.priority}\nCreated Time: {time.ctime(self.created_time)}\n'

class RequirementList:

    def __init__(self):
        self.requirements = []

    def add_requirement(self, requirement):
        self.requirements.append(requirement)

    def remove_requirement(self, index):
        del self.requirements[index]

    def get_requirements(self, sort_key='priority'):
        return sorted(self.requirements, key=lambda x: getattr(x, sort_key))

    def save(self, filename):
        with open(filename, 'w') as f:
            json.dump([ob.__dict__ for ob in self.requirements], f)

    def load(self, filename):
        with open(filename, 'r') as f:
            data = json.load(f)
            self.requirements = [Requirement(ob['name'], ob['description'], ob['priority']) for ob in data]

def menu():
    print('Requirement Management System')
    print('1. Add Requirement')
    print('2. View Requirements')
    print('3. Modify Requirement')
    print('4. Delete Requirement')
    print('5. Save to File')
    print('6. Load from File')
    print('7. Quit')

if __name__ == '__main__':
    requirement_list = RequirementList()

    while True:
        menu()
        choice = input('Enter your choice: ')

        if choice == '1':
            name = input('Enter requirement name: ')
            description = input('Enter requirement description: ')
            priority = int(input('Enter requirement priority: '))
            requirement = Requirement(name, description, priority)
            requirement_list.add_requirement(requirement)
            print('Requirement added successfully!')

        elif choice == '2':
            sort_key = input('Enter sorting key (priority/created_time): ')
            requirements = requirement_list.get_requirements(sort_key)
            for index, requirement in enumerate(requirements):
                print(f'Requirement {index+1}:')
                print(requirement)

        elif choice == '3':
            index = int(input('Enter requirement index: '))
            name = input('Enter requirement name: ')
            description = input('Enter requirement description: ')
            priority = int(input('Enter requirement priority: '))
            requirement = Requirement(name, description, priority)
            requirement_list.requirements[index] = requirement
            print('Requirement modified successfully!')

        elif choice == '4':
            index = int(input('Enter requirement index: '))
            requirement_list.remove_requirement(index)
            print('Requirement deleted successfully!')

        elif choice == '5':
            filename = input('Enter filename to save: ')
            requirement_list.save(filename)
            print('Requirements saved successfully!')

        elif choice == '6':
            filename = input('Enter filename to load: ')
            requirement_list.load(filename)
            print('Requirements loaded successfully!')

        elif choice == '7':
            print('Exiting...')
            break

        else:
            print('Invalid choice, please try again!')

这段代码包含了一个 Requirement 类和一个 RequirementList 类。Requirement 类表示某一个具体的需求，包含需求名称、需求描述、优先级和创建时间等信息。RequirementList 类表示整个需求列表，包括添加需求、删除需求、获取需求列表、保存到文件和从文件中加载等功能。用户可以通过菜单界面来执行不同的操作。需要注意的是，这里我们将需求信息保存到一个 JSON 文件中，如果需求信息较多，可以考虑使用数据库来存储。