使用FTPwalker连接到FTP资源失败，并显示“名称或服务未知”

Question

我正在尝试使用FTPwalker来遍历ftp目录，但无法连接。

当前呼叫正在使用：

walker = ftpwalker(server_name="hostname", url="ftp://username:password@hostname") 

然而walker.check_state()给出：

>> walker.check_state() 
Find leading... 
Traceback (most recent call last): 
    File "<stdin>", line 1, in <module> 
    File "/usr/lib/python3.4/site-packages/FTPwalker/runwalker.py", line 100, in check_state 
    self.path_not_exit(False) 
    File "/usr/lib/python3.4/site-packages/FTPwalker/runwalker.py", line 157, in path_not_exit 
    self.m_walker.Process_dispatcher(False) 
    File "/usr/lib/python3.4/site-packages/FTPwalker/main_walker.py", line 82, in Process_dispatcher 
    leadings = self.find_leading_dirs(self.root) 
    File "/usr/lib/python3.4/site-packages/FTPwalker/main_walker.py", line 37, in find_leading_dirs 
    files, dirs = self.run_object.find_leading(top) 
    File "/usr/lib/python3.4/site-packages/FTPwalker/traverse.py", line 75, in find_leading 
    conn = ftplib.FTP(self.server_url) 
    File "/usr/lib64/python3.4/ftplib.py", line 118, in __init__ 
    self.connect(host) 
    File "/usr/lib64/python3.4/ftplib.py", line 153, in connect 
    source_address=self.source_address) 
    File "/usr/lib64/python3.4/socket.py", line 498, in create_connection 
    for res in getaddrinfo(host, port, 0, SOCK_STREAM): 
    File "/usr/lib64/python3.4/socket.py", line 537, in getaddrinfo 
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags): 
socket.gaierror: [Errno -2] Name or service not known 

是在url参数这里输入正确的格式？ pinging hostname工程。

Answer 1

虽然参数被误导命名为url，在official example显示相当清晰，该值实际上应该是一个普通的主机名：

from FTPwalker.runwalker import ftpwalker 

walker = ftpwalker("Uniprot", "ftp.uniprot.org") 
walker.check_state() 

---

在结束时，值变为ftplib.FTP.connect，这采取“主机名”。