使用FTPwalker連接到FTP資源失敗，並顯示「名稱或服務未知」

Question

我正在嘗試使用FTPwalker來遍歷ftp目錄，但無法連接。

當前呼叫正在使用：

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

然而walker.check_state()給出：

>> 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參數這裏輸入正確的格式？ pinging hostname工程。

Answer 1

雖然參數被誤導命名爲url，在official example顯示相當清晰，該值實際上應該是一個普通的主機名：

from FTPwalker.runwalker import ftpwalker 

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

---

在結束時，值變爲ftplib.FTP.connect，這採取「主機名」。