远程服务器linux文件是否存在

import paramiko

def check_file_exists(hostname, username, password, file_path):
    # 创建SSH客户端
    ssh = paramiko.SSHClient()
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    
    try:
        # 连接到服务器
        ssh.connect(hostname, username=username, password=password)
        
        # 执行命令检查文件是否存在
        stdin, stdout, stderr = ssh.exec_command(f'test -e {file_path} && echo "exists" || echo "not exists"')
        result = stdout.read().decode('utf-8').strip()
        
        return result == 'exists'
    except Exception as e:
        print(f"Error: {e}")
        return False
    finally:
        # 关闭连接
        ssh.close()

# 使用示例
hostname = 'your_remote_server_ip'
username = 'your_username'
password = 'your_password'
file_path = '/path/to/your/file'

if check_file_exists(hostname, username, password, file_path):
    print("文件存在")
else:
    print("文件不存在")