python连接ftp，自动下载匹配字符的文件的脚本

你可以使用Python的ftplib库来连接FTP服务器并下载匹配字符的文件。以下是一个示例脚本：

from ftplib import FTP

def download_files(hostname, username, password, remote_path, local_path, match_string):
    ftp = FTP(hostname)
    ftp.login(username, password)
    ftp.cwd(remote_path)

    files = ftp.nlst()

    for file in files:
        if match_string in file:
            local_file = local_path + '/' + file
            with open(local_file, 'wb') as f:
                ftp.retrbinary('RETR ' + file, f.write)
            print(f"Downloaded file: {file}")

    ftp.quit()

# 用法示例
hostname = 'FTP服务器地址'
username = '用户名'
password = '密码'
remote_path = '远程目录'
local_path = '本地目录'
match_string = '匹配字符串'

download_files(hostname, username, password, remote_path, local_path, match_string)

请将其中的`hostname`，`username`，`password`，`remote_path`，`local_path`和`match_string`替换为你自己的实际值。这个脚本会连接到FTP服务器，列出远程目录中的文件，并下载文件名中包含匹配字符串的文件到本地目录。