python socket基于POP3的简易邮件客服端

以下是一个基于POP3的简易邮件客户端的Python实现，使用了socket模块：

import socket

# POP3服务器地址和端口号
POP3_SERVER = 'pop3.example.com'
POP3_PORT = 110

# 用户名和密码
USERNAME = 'example@example.com'
PASSWORD = 'password'

# 连接POP3服务器
client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client_socket.connect((POP3_SERVER, POP3_PORT))

# 接收服务器返回的欢迎信息
response = client_socket.recv(1024)
print(response.decode())

# 发送用户名
command = 'USER {}\r\n'.format(USERNAME)
client_socket.send(command.encode())
response = client_socket.recv(1024)
print(response.decode())

# 发送密码
command = 'PASS {}\r\n'.format(PASSWORD)
client_socket.send(command.encode())
response = client_socket.recv(1024)
print(response.decode())

# 获取邮件数量
command = 'STAT\r\n'
client_socket.send(command.encode())
response = client_socket.recv(1024)
print(response.decode())

# 获取邮件列表
command = 'LIST\r\n'
client_socket.send(command.encode())
response = client_socket.recv(1024)
print(response.decode())

# 退出
command = 'QUIT\r\n'
client_socket.send(command.encode())
response = client_socket.recv(1024)
print(response.decode())

# 关闭连接
client_socket.close()

注意：此代码仅作为示例，实际应用时需要根据具体的POP3服务器和账户信息进行修改。