Python实现车辆租赁系统

在现代社会，车辆租赁服务已成为许多人出行的重要选择。为了简化租赁流程，提升用户体验，我们可以利用Python语言开发一个简洁高效的车辆租赁系统。本文将详细介绍如何从零开始构建这样一个系统。

Python实现车辆租赁系统

系统需求分析

首先，我们需要明确系统的基本功能：

用户注册与登录：用户可以通过注册账号并登录系统。
车辆展示：展示可租赁的车辆信息，包括车型、价格等。
租赁与归还：用户可以选择车辆进行租赁，并在使用后归还。
费用计算：根据租赁时间和车型自动计算费用。

系统设计

数据结构

我们使用Python的字典和列表来存储用户和车辆信息：

users = {}
vehicles = [
    {"id": 1, "type": "SUV", "price_per_day": 100},
    {"id": 2, "type": "Sedan", "price_per_day": 80},
    {"id": 3, "type": "Convertible", "price_per_day": 120}
]

功能模块

用户注册与登录

def register(username, password):
    if username in users:
        print("Username already exists.")
        return False
    users[username] = password
    print("Registration successful.")
    return True

def login(username, password):
    if username in users and users[username] == password:
        print("Login successful.")
        return True
    print("Invalid username or password.")
    return False

车辆展示

def display_vehicles():
    for vehicle in vehicles:
        print(f"ID: {vehicle['id']}, Type: {vehicle['type']}, Price per Day: ${vehicle['price_per_day']}")

租赁与归还

def rent_vehicle(username, vehicle_id, days):
    for vehicle in vehicles:
        if vehicle['id'] == vehicle_id:
            cost = vehicle['price_per_day'] * days
            print(f"{username} rented {vehicle['type']} for {days} days. Total cost: ${cost}")
            return
    print("Vehicle not found.")

def return_vehicle(vehicle_id):
    print(f"Vehicle {vehicle_id} returned successfully.")

系统实现

将上述模块整合到一个主程序中：

def main():
    while True:
        print("\nWelcome to the Vehicle Rental System")
        print("1. Register")
        print("2. Login")
        print("3. Display Vehicles")
        print("4. Rent Vehicle")
        print("5. Return Vehicle")
        print("6. Exit")

        choice = input("Enter your choice: ")

        if choice == '1':
            username = input("Enter username: ")
            password = input("Enter password: ")
            register(username, password)
        elif choice == '2':
            username = input("Enter username: ")
            password = input("Enter password: ")
            if login(username, password):
                current_user = username
        elif choice == '3':
            display_vehicles()
        elif choice == '4':
            vehicle_id = int(input("Enter vehicle ID: "))
            days = int(input("Enter number of days: "))
            rent_vehicle(current_user, vehicle_id, days)
        elif choice == '5':
            vehicle_id = int(input("Enter vehicle ID: "))
            return_vehicle(vehicle_id)
        elif choice == '6':
            print("Thank you for using the system.")
            break
        else:
            print("Invalid choice. Please try again.")

if __name__ == "__main__":
    main()