怎么使用ftp上传文件

import ftplib

def upload_file(ftp_host, ftp_user, ftp_pass, local_file_path, remote_file_path):
    try:
        # 连接到FTP服务器
        with ftplib.FTP(ftp_host) as ftp:
            ftp.login(user=ftp_user, passwd=ftp_pass)
            print(f"Connected to {ftp_host}")
            
            # 打开本地文件
            with open(local_file_path, 'rb') as file:
                # 上传文件到FTP服务器
                ftp.storbinary(f'STOR {remote_file_path}', file)
                print(f"File {local_file_path} uploaded to {remote_file_path}")
    except Exception as e:
        print(f"Error: {e}")

# 使用示例
upload_file('ftp.example.com', 'username', 'password', 'local_file.txt', 'remote_file.txt')