【已解決】python ftp.cwd 切換目錄時(shí)報(bào)501錯(cuò)誤，請求大家?guī)椭�一下，多謝！

pythonTester

python實(shí)現(xiàn)ftp 到ftp服務(wù)器，然后切換目錄的代碼，但是在  紅色高亮部分的語句，報(bào)錯(cuò)501  ftplib.error_perm: 501 Syntax error in arguments.
remoteDir 是一個(gè)  字符串類型變量，存放的路徑為 remoteDir =  ' /sysdisk0/xgwconfig'

  class ftpSysOpt_Qwener:
    def __init__(self):
        ##        self.ftpObj = ftplib.FTP()
        self.ftp_threads = []
        self.ftpConnections = {}
        self.xGW = '1.1.1.1'
        pass

  
def _ftp_connect_to(self,task,addr,port,username,passcode,conTimOut=60):
        username = str(username)
        passcode = str(passcode)
        addr = str(addr)
        port = int(port)
        self.ftpConnections[task] = ftplib.FTP()
        try:
            socket.setdefaulttimeout(conTimOut)
            self.ftpConnections[task].set_pasv(True)
            ret = self.ftpConnections[task].connect(addr,port)
            self.print_info(ret)
            ret = self.ftpConnections[task].login(username,passcode)
            self.print_info(ret)
            respInfo = str(self.ftpConnections[task].getwelcome())
            logger.info('FTP login success: %s\n' % respInfo)
            self.print_info(ret)
        except Exception:
            logger.info('FTP login failed..!!\nIncorrect username or password..!!\n')  

def Open_Ftp_Srv(self,task):
        ftpN,ftpPwd,ftpAddr,ftpPort,ftpDir = self._get_xgwFtpInfo()
       self._ftp_connect_to(task,ftpAddr,ftpPort,ftpN,ftpPwd)
        return ftpDir

def Open_Ftp_Dir(self,task):
        currentPath = ''
        remoteDir = self.Open_Ftp_Srv(task)
##        try:
        self.ftpConnections[task].set_debuglevel(2)
        self.ftpConnections[task].pwd()
        self.ftpConnections[task].cwd(remoteDir)
        print 'FILE: Qwener_ftpSrvInfo.log - FTP path: %s \n' % remoteDir
        currentPath = self.ftpConnections[task].pwd()
        print 'FTP Opened Directory: %s \n' % currentPath
##        except Exception:
##            self.error_info('Change the Remote Directory is Failed..!!')
        if '' != currentPath:
            return currentPath
        else:
            raise ValueError, 'Can not get the remote directory..!!\n'


調(diào)試結(jié)果：
  230 Login successful.
*cmd* 'PWD'
*put* 'PWD\r\n'
*get* '257 "/" is current directory.\r\n'
*resp* '257 "/" is current directory.'
*cmd* 'CWD /sysdisk0/xgwconfig'
*put* 'CWD /sysdisk0/xgwconfig\r\n'
*get* '501 Syntax error in arguments.\r\n'
*resp* '501 Syntax error in arguments.'
Traceback (most recent call last):
  File "<string>", line 138, in run
  File "C:\Python26\Lib\bdb.py", line 368, in run
    exec cmd in globals, locals
  File "D:\00_jenkins\jenkinsPythonLib\ftpSysOpt_Qwener.py", line 187, in <module>
    main()
  File "D:\00_jenkins\jenkinsPythonLib\ftpSysOpt_Qwener.py", line 171, in main
    ftpOptObj.Delete_Cfg_xGW()
  File "D:\00_jenkins\jenkinsPythonLib\ftpSysOpt_Qwener.py", line 156, in Delete_Cfg_xGW
    cfgPath = self.Open_Ftp_Dir(task)
  File "D:\00_jenkins\jenkinsPythonLib\ftpSysOpt_Qwener.py", line 118, in Open_Ftp_Dir
    self.ftpConnections[task].cwd(remoteDir)
  File "C:\Python26\Lib\ftplib.py", line 537, in cwd
    return self.voidcmd(cmd)
  File "C:\Python26\Lib\ftplib.py", line 248, in voidcmd
    return self.voidresp()
  File "C:\Python26\Lib\ftplib.py", line 223, in voidresp
    resp = self.getresp()
  File "C:\Python26\Lib\ftplib.py", line 218, in getresp
    raise error_perm, resp
ftplib.error_perm: 501 Syntax error in arguments.  // 實(shí)現(xiàn)看不出，cwd入?yún)⒂惺裁凑Z法錯(cuò)誤

pythonTester

自查發(fā)現(xiàn)：cwd的入?yún)⑷绻�填入一個(gè)不存在目錄，也報(bào)錯(cuò)為501 Syntax error...，這個(gè)個(gè)人覺得不科學(xué)，誤導(dǎo)人�。�有種想改ftplib庫代碼的沖動(dòng)
分析結(jié)果：該問題就是cwd入?yún)⒌哪夸浭且粋�(gè)不存在的目錄
分析方法：發(fā)帖第二天和朋友溝通，通過手動(dòng)ftp服務(wù)器，發(fā)現(xiàn)輸入同樣的目錄，還是報(bào)501，才發(fā)現(xiàn)
解決方式：（1）使用cwd填入正確的路徑/（2）或者使用ftplib.FTP.sendcmd(cd 'path') 亦可

再次分享結(jié)果，共同進(jìn)步，感謝大家，感謝我的這個(gè)朋友

pythonTester

補(bǔ)充一下，這個(gè)501是ftp服務(wù)器返回信息，之前講了一句“有種想改ftplib庫代碼的沖動(dòng)”純屬太郁悶所致