Question

我试图在2分钟内重新连接到FTP服务器，以便访问新生成的文件。但我面临属性错误。无法识别问题。任何人都建议正确的重新连接方式到FTP服务器。

代码：

def Connect1():
    ftp=FTP('ipaddress')
    ftp.login(username,password)
    files=ftp.dir()
    for file_ in natsorted(files):
            if file_.endswith('.sec.gz'):
            file_c=file_.split('/')
            file_d=file_c[3]
            print file_d
            files=date_b+'\\'+file_d
            print files
            ftp.retrbinary('RETR files', open('C:\\test\\'+file_d,   'wb').write)
            ftp.quit()
            time.sleep(120)
Connect1()

结果：

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-20-00293e7b319b> in <module>()
----> 1 Connect()
      2 
      3 
      4 

<ipython-input-19-0bc6dc053f87> in Connect()
     49             #output_filename1 = os.path.join(files)
     50             #print output_filename1
---> 51             ftp.retrbinary('RETR FAO05/DATA_INTV_NEW/'+files, open('C:\\test\\'+file_d, 'wb').write)
     52             ftp.quit()
     53             time.sleep(110)

C:\Python27\Lib\ftplib.pyc in retrbinary(self, cmd, callback, blocksize, rest)
    411           The response code.
    412         """
--> 413         self.voidcmd('TYPE I')
    414         conn = self.transfercmd(cmd, rest)
    415         while 1:

C:\Python27\Lib\ftplib.pyc in voidcmd(self, cmd)
    251     def voidcmd(self, cmd):
    252         """Send a command and expect a response beginning with '2'."""
--> 253         self.putcmd(cmd)
    254         return self.voidresp()
    255 

C:\Python27\Lib\ftplib.pyc in putcmd(self, line)
    179     def putcmd(self, line):
    180         if self.debugging: print '*cmd*', self.sanitize(line)
--> 181         self.putline(line)
    182 
    183     # Internal: return one line from the server, stripping CRLF.

C:\Python27\Lib\ftplib.pyc in putline(self, line)
    174         line = line + CRLF
    175         if self.debugging > 1: print '*put*', self.sanitize(line)
--> 176         self.sock.sendall(line)
    177 
    178     # Internal: send one command to the server (through putline())

AttributeError: 'NoneType' object has no attribute 'sendall'

Answer 1

部分是一个疯狂的猜测，因为你的代码的缩进完全被破坏了，但如果对ftp.quit()的调用真的在你的for循环中，那么难怪你在第二次迭代时会得到这样的错误。如果你真的想在每次迭代之间断开与服务器的连接，那么你显然必须在下一次迭代开始时重新连接......

如何修复错误：＆＃39; NoneType＆＃39;对象没有属性＆＃39; sendall＆＃39;在python中

1 个答案: