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。
python
# 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。
python
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。
python
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。
python
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。
python
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