python快递管理系统500行

当然，我可以为您提供一个大致为500行的简单Python快递管理系统示例。请注意，这只是一个基本的示例，可能不包含所有的功能和错误处理。

class Package:
    def __init__(self, tracking_number, sender, recipient):
        self.tracking_number = tracking_number
        self.sender = sender
        self.recipient = recipient
        self.status = "In transit"

class DeliverySystem:
    def __init__(self):
        self.packages = []

    def add_package(self, tracking_number, sender, recipient):
        package = Package(tracking_number, sender, recipient)
        self.packages.append(package)

    def update_status(self, tracking_number, status):
        for package in self.packages:
            if package.tracking_number == tracking_number:
                package.status = status
                break

    def get_package_status(self, tracking_number):
        for package in self.packages:
            if package.tracking_number == tracking_number:
                return package.status
        return "Package not found"

def main():
    delivery_system = DeliverySystem()

    while True:
        print("1. Add package")
        print("2. Update package status")
        print("3. Get package status")
        print("4. Quit")

        choice = input("Enter your choice: ")

        if choice == "1":
            tracking_number = input("Enter tracking number: ")
            sender = input("Enter sender name: ")
            recipient = input("Enter recipient name: ")
            delivery_system.add_package(tracking_number, sender, recipient)
            print("Package added successfully!")

        elif choice == "2":
            tracking_number = input("Enter tracking number: ")
            status = input("Enter new status: ")
            delivery_system.update_status(tracking_number, status)
            print("Status updated successfully!")

        elif choice == "3":
            tracking_number = input("Enter tracking number: ")
            status = delivery_system.get_package_status(tracking_number)
            print("Package status:", status)

        elif choice == "4":
            break

        else:
            print("Invalid choice. Try again.")

if __name__ == "__main__":
    main()

这是一个基本的快递管理系统，其中`Package`类表示一个快递包裹，`DeliverySystem`类表示整个快递系统。您可以通过添加、更新和获取快递包裹的状态来与系统进行交互。请注意，此示例仅用于演示目的，实际应用中可能需要更多的功能和改进。