python 交互式FTP

可以使用Python内置的ftplib模块来实现交互式FTP。首先需要连接到FTP服务器，然后可以使用命令进行文件上传、下载、删除等操作。以下是一个简单的示例代码：

import ftplib

ftp = ftplib.FTP("ftp.example.com")
ftp.login("username", "password")

while True:
    cmd = input("FTP> ")
    if cmd.startswith("get "):
        filename = cmd.split()[1]
        with open(filename, "wb") as f:
            ftp.retrbinary("RETR " + filename, f.write)
    elif cmd.startswith("put "):
        filename = cmd.split()[1]
        with open(filename, "rb") as f:
            ftp.storbinary("STOR " + filename, f)
    elif cmd.startswith("delete "):
        filename = cmd.split()[1]
        ftp.delete(filename)
    elif cmd == "quit":
        ftp.quit()
        break
    else:
        print("Invalid command")