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计算器
创建一个简单的计算器,能够进行加、减、乘、除四种基本运算。
# 定义加法函数 def add(x, y): return x + y # 定义减法函数 def subtract(x, y): return x - y # 定义乘法函数 def multiply(x, y): return x * y # 定义除法函数 def divide(x, y): if y == 0: return "Error! Division by zero." # 防止除以零 return x / y # 打印操作选项 print("Select operation:") print("1. Add") print("2. Subtract") print("3. Multiply") print("4. Divide") # 获取用户选择的操作 choice = input("Enter choice(1/2/3/4): ") # 获取用户输入的两个数字 num1 = float(input("Enter first number: ")) num2 = float(input("Enter second number: ")) # 根据用户选择的操作调用相应的函数 if choice == '1': print(f"{num1} + {num2} = {add(num1, num2)}") elif choice == '2': print(f"{num1} - {num2} = {subtract(num1, num2)}") elif choice == '3': print(f"{num1} * {num2} = {multiply(num1, num2)}") elif choice == '4': print(f"{num1} / {num2} = {divide(num1, num2)}") else: print("Invalid input") # 处理无效输入
猜数字游戏
编写一个猜数字游戏,计算机随机生成一个1到100之间的数字,用户需要猜这个数字,程序会提示猜大了还是猜小了,直到猜对为止。
import random # 导入随机数模块 # 生成一个1到100之间的随机数 number_to_guess = random.randint(1, 100) attempts = 0 # 初始化尝试次数 print("Guess the number between 1 and 100") while True: guess = int(input("Enter your guess: ")) # 获取用户猜测的数字 attempts += 1 # 尝试次数加一 if guess < number_to_guess: print("Too low!") # 提示猜的数字太小 elif guess > number_to_guess: print("Too high!") # 提示猜的数字太大 else: print(f"Congratulations! You've guessed the number in {attempts} attempts.") # 猜对了 break # 结束循环
简单的记事本
创建一个简单的记事本应用,用户可以添加、查看和删除笔记。
notes = [] # 初始化一个空列表来存储笔记 # 添加笔记的函数 def add_note(): note = input("Enter your note: ") notes.append(note) print("Note added!") # 查看所有笔记的函数 def view_notes(): print("Your notes:") for i, note in enumerate(notes, 1): print(f"{i}. {note}") # 删除笔记的函数 def delete_note(): view_notes() # 先显示所有笔记 note_index = int(input("Enter the note number to delete: ")) - 1 if 0 <= note_index < len(notes): del notes[note_index] print("Note deleted!") else: print("Invalid note number") # 处理无效输入 # 主循环 while True: print("\n1. Add Note") print("2. View Notes") print("3. Delete Note") print("4. Exit") choice = input("Enter your choice: ") if choice == '1': add_note() elif choice == '2': view_notes() elif choice == '3': delete_note() elif choice == '4': break # 退出循环 else: print("Invalid choice. Please try again.") # 处理无效选择
简单的联系人管理系统
创建一个简单的联系人管理系统,可以添加、查看、删除联系人。
contacts = {} # 初始化一个空字典来存储联系人 # 添加联系人的函数 def add_contact(): name = input("Enter contact name: ") phone = input("Enter contact phone number: ") contacts[name] = phone print("Contact added!") # 查看所有联系人的函数 def view_contacts(): print("Your contacts:") for name, phone in contacts.items(): print(f"Name: {name}, Phone: {phone}") # 删除联系人的函数 def delete_contact(): name = input("Enter the name of the contact to delete: ") if name in contacts: del contacts[name] print("Contact deleted!") else: print("Contact not found") # 处理联系人未找到的情况 # 主循环 while True: print("\n1. Add Contact") print("2. View Contacts") print("3. Delete Contact") print("4. Exit") choice = input("Enter your choice: ") if choice == '1': add_contact() elif choice == '2': view_contacts() elif choice == '3': delete_contact() elif choice == '4': break # 退出循环 else: print("Invalid choice. Please try again.") # 处理无效选择
简单的待办事项列表
创建一个简单的待办事项列表应用,可以添加、查看和删除待办事项。
todo_list = [] # 初始化一个空列表来存储待办事项 # 添加任务的函数 def add_task(): task = input("Enter a new task: ") todo_list.append(task) print("Task added!") # 查看所有任务的函数 def view_tasks(): print("Your tasks:") for i, task in enumerate(todo_list, 1): print(f"{i}. {task}") # 删除任务的函数 def delete_task(): view_tasks() # 先显示所有任务 task_index = int(input("Enter the task number to delete: ")) - 1 if 0 <= task_index < len(todo_list): del todo_list[task_index] print("Task deleted!") else: print("Invalid task number") # 处理无效输入 # 主循环 while True: print("\n1. Add Task") print("2. View Tasks") print("3. Delete Task") print("4. Exit") choice = input("Enter your choice: ") if choice == '1': add_task() elif choice == '2': view_tasks() elif choice == '3': delete_task() elif choice == '4': break # 退出循环 else: print("Invalid choice. Please try again.") # 处理无效选择