text: """An FTP client class and some helper functions.
  
  Based on RFC 959: File Transfer Protocol (FTP), by J. Postel and J. Reynolds
  
  Example:
  
  >>> from ftplib import FTP
  >>> ftp = FTP('ftp.python.org') # connect to host, default port
  >>> ftp.login() # default, i.e.: user anonymous, passwd anonymous@
  '230 Guest login ok, access restrictions apply.'
  >>> ftp.retrlines('LIST') # list directory contents
  total 9
  drwxr-xr-x   8 root     wheel        1024 Jan  3  1994 .
  drwxr-xr-x   8 root     wheel        1024 Jan  3  1994 ..
  drwxr-xr-x   2 root     wheel        1024 Jan  3  1994 bin
  drwxr-xr-x   2 root     wheel        1024 Jan  3  1994 etc
  d-wxrwxr-x   2 ftp      wheel        1024 Sep  5 13:43 incoming
  drwxr-xr-x   2 root     wheel        1024 Nov 17  1993 lib
  drwxr-xr-x   6 1094     wheel        1024 Sep 13 19:07 pub
  drwxr-xr-x   3 root     wheel        1024 Jan  3  1994 usr
  -rw-r--r--   1 root     root          312 Aug  1  1994 welcome.msg
  '226 Transfer complete.'
  >>> ftp.quit()
  '221 Goodbye.'
  >>>
  
  A nice test that reveals some of the network dialogue would be:
  python ftplib.py -d localhost -l -p -l
  """
  
  #
  # Changes and improvements suggested by Steve Majewski.
  # Modified by Jack to work on the mac.
  # Modified by Siebren to support docstrings and PASV.
  #
  
  import os
  import sys
  
  # Import SOCKS module if it exists, else standard socket module socket
  #try:
  #    import SOCKS; socket = SOCKS; del SOCKS # import SOCKS as socket
  #    from socket import getfqdn; socket.getfqdn = getfqdn; del getfqdn
  #except ImportError:
  import socket
  
  __all__ = ["FTP","Netrc"]
  
  # Magic number from <socket.h>
  MSG_OOB = 0x1                           # Process data out of band
  
  
  # The standard FTP server control port
  FTP_PORT = 21
  
  
  # Exception raised when an error or invalid response is received
  class Error(Exception): pass
  class error_reply(Error): pass          # unexpected [123]xx reply
  class error_temp(Error): pass           # 4xx errors
  class error_perm(Error): pass           # 5xx errors
  class error_proto(Error): pass          # response does not begin with [1-5]
  
  
  # All exceptions (hopefully) that may be raised here and that aren't
  # (always) programming errors on our side
  all_errors = (Error, socket.error, IOError, EOFError)
  
  
  # Line terminators (we always output CRLF, but accept any of CRLF, CR, LF)
  CRLF = '\r\n'
  
  
  # The class itself
  class FTP:
  
      '''An FTP client class.
  
      To create a connection, call the class using these argument:
              host, user, passwd, acct
      These are all strings, and have default value ''.
      Then use self.connect() with optional host and port argument.
  
      To download a file, use ftp.retrlines('RETR ' + filename),
      or ftp.retrbinary() with slightly different arguments.
      To upload a file, use ftp.storlines() or ftp.storbinary(),
      which have an open file as argument (see their definitions
      below for details).
      The download/upload functions first issue appropriate TYPE
      and PORT or PASV commands.
  '''
  
      debugging = 0
      host = ''
      port = FTP_PORT
      sock = None
      file = None
      welcome = None
      passiveserver = 1
  
      # Initialization method (called by class instantiation).
      # Initialize host to localhost, port to standard ftp port
      # Optional arguments are host (for connect()),
      # and user, passwd, acct (for login())
      def __init__(self, host='', user='', passwd='', acct=''):
          if host:
              self.connect(host)
              if user: self.login(user, passwd, acct)
  
      def connect(self, host = '', port = 0):
          '''Connect to host.  Arguments are:
          - host: hostname to connect to (string, default previous host)
          - port: port to connect to (integer, default previous port)'''
          if host: self.host = host
          if port: self.port = port
          msg = "getaddrinfo returns an empty list"
          for res in socket.getaddrinfo(self.host, self.port, 0, socket.SOCK_STREAM):
              af, socktype, proto, canonname, sa = res
              try:
                  self.sock = socket.socket(af, socktype, proto)
                  self.sock.connect(sa)
              except socket.error, msg:
                  if self.sock:
                      self.sock.close()
                  self.sock = None
                  continue
              break
          if not self.sock:
              raise socket.error, msg
          self.af = af
          self.file = self.sock.makefile('rb')
          self.welcome = self.getresp()
          return self.welcome
  
      def getwelcome(self):
          '''Get the welcome message from the server.
          (this is read and squirreled away by connect())'''
          if self.debugging:
              print '*welcome*', self.sanitize(self.welcome)
          return self.welcome
  
      def set_debuglevel(self, level):
          '''Set the debugging level.
          The required argument level means:
          0: no debugging output (default)
          1: print commands and responses but not body text etc.
          2: also print raw lines read and sent before stripping CR/LF'''
          self.debugging = level
      debug = set_debuglevel
  
      def set_pasv(self, val):
          '''Use passive or active mode for data transfers.
          With a false argument, use the normal PORT mode,
          With a true argument, use the PASV command.'''
          self.passiveserver = val
  
      # Internal: "sanitize" a string for printing
      def sanitize(self, s):
          if s[:5] == 'pass ' or s[:5] == 'PASS ':
              i = len(s)
              while i > 5 and s[i-1] in '\r\n':
                  i = i-1
              s = s[:5] + '*'*(i-5) + s[i:]
          return repr(s)
  
      # Internal: send one line to the server, appending CRLF
      def putline(self, line):
          line = line + CRLF
          if self.debugging > 1: print '*put*', self.sanitize(line)
          self.sock.sendall(line)
  
      # Internal: send one command to the server (through putline())
      def putcmd(self, line):
          if self.debugging: print '*cmd*', self.sanitize(line)
          self.putline(line)
  
      # Internal: return one line from the server, stripping CRLF.
      # Raise EOFError if the connection is closed
      def getline(self):
          line = self.file.readline()
          if self.debugging > 1:
              print '*get*', self.sanitize(line)
          if not line: raise EOFError
          if line[-2:] == CRLF: line = line[:-2]
          elif line[-1:] in CRLF: line = line[:-1]
          return line
  
      # Internal: get a response from the server, which may possibly
      # consist of multiple lines.  Return a single string with no
      # trailing CRLF.  If the response consists of multiple lines,
      # these are separated by '\n' characters in the string
      def getmultiline(self):
          line = self.getline()
          if line[3:4] == '-':
              code = line[:3]
              while 1:
                  nextline = self.getline()
                  line = line + ('\n' + nextline)
                  if nextline[:3] == code and \
                          nextline[3:4] != '-':
                      break
          return line
  
      # Internal: get a response from the server.
      # Raise various errors if the response indicates an error
      def getresp(self):
          resp = self.getmultiline()
          if self.debugging: print '*resp*', self.sanitize(resp)
          self.lastresp = resp[:3]
          c = resp[:1]
          if c in ('1', '2', '3'):
              return resp
          if c == '4':
              raise error_temp, resp
          if c == '5':
              raise error_perm, resp
          raise error_proto, resp
  
      def voidresp(self):
          """Expect a response beginning with '2'."""
          resp = self.getresp()
          if resp[0] != '2':
              raise error_reply, resp
          return resp
  
      def abort(self):
          '''Abort a file transfer.  Uses out-of-band data.
          This does not follow the procedure from the RFC to send Telnet
          IP and Synch; that doesn't seem to work with the servers I've
          tried.  Instead, just send the ABOR command as OOB data.'''
          line = 'ABOR' + CRLF
          if self.debugging > 1: print '*put urgent*', self.sanitize(line)
          self.sock.sendall(line, MSG_OOB)
          resp = self.getmultiline()
          if resp[:3] not in ('426', '226'):
              raise error_proto, resp
  
      def sendcmd(self, cmd):
          '''Send a command and return the response.'''
          self.putcmd(cmd)
          return self.getresp()
  
      def voidcmd(self, cmd):
          """Send a command and expect a response beginning with '2'."""
          self.putcmd(cmd)
          return self.voidresp()
  
      def sendport(self, host, port):
          '''Send a PORT command with the current host and the given
          port number.
          '''
          hbytes = host.split('.')
          pbytes = [repr(port/256), repr(port%256)]
          bytes = hbytes + pbytes
          cmd = 'PORT ' + ','.join(bytes)
          return self.voidcmd(cmd)
  
      def sendeprt(self, host, port):
          '''Send a EPRT command with the current host and the given port number.'''
          af = 0
          if self.af == socket.AF_INET:
              af = 1
          if self.af == socket.AF_INET6:
              af = 2
          if af == 0:
              raise error_proto, 'unsupported address family'
          fields = ['', repr(af), host, repr(port), '']
          cmd = 'EPRT ' + '|'.join(fields)
          return self.voidcmd(cmd)
  
      def makeport(self):
          '''Create a new socket and send a PORT command for it.'''
          msg = "getaddrinfo returns an empty list"
          sock = None
          for res in socket.getaddrinfo(None, 0, self.af, socket.SOCK_STREAM, 0, socket.AI_PASSIVE):
              af, socktype, proto, canonname, sa = res
              try:
                  sock = socket.socket(af, socktype, proto)
                  sock.bind(sa)
              except socket.error, msg:
                  if sock:
                      sock.close()
                  sock = None
                  continue
              break
          if not sock:
              raise socket.error, msg
          sock.listen(1)
          port = sock.getsockname()[1] # Get proper port
          host = self.sock.getsockname()[0] # Get proper host
          if self.af == socket.AF_INET:
              resp = self.sendport(host, port)
          else:
              resp = self.sendeprt(host, port)
          return sock
  
      def makepasv(self):
          if self.af == socket.AF_INET:
              host, port = parse227(self.sendcmd('PASV'))
          else:
              host, port = parse229(self.sendcmd('EPSV'), self.sock.getpeername())
          return host, port
  
      def ntransfercmd(self, cmd, rest=None):
          """Initiate a transfer over the data connection.
  
          If the transfer is active, send a port command and the
          transfer command, and accept the connection.  If the server is
          passive, send a pasv command, connect to it, and start the
          transfer command.  Either way, return the socket for the
          connection and the expected size of the transfer.  The
          expected size may be None if it could not be determined.
  
          Optional `rest' argument can be a string that is sent as the
          argument to a RESTART command.  This is essentially a server
          marker used to tell the server to skip over any data up to the
          given marker.
          """
          size = None
          if self.passiveserver:
              host, port = self.makepasv()
              af, socktype, proto, canon, sa = socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM)[0]
              conn = socket.socket(af, socktype, proto)
              conn.connect(sa)
              if rest is not None:
                  self.sendcmd("REST %s" % rest)
              resp = self.sendcmd(cmd)
              if resp[0] != '1':
                  raise error_reply, resp
          else:
              sock = self.makeport()
              if rest is not None:
                  self.sendcmd("REST %s" % rest)
              resp = self.sendcmd(cmd)
              if resp[0] != '1':
                  raise error_reply, resp
              conn, sockaddr = sock.accept()
          if resp[:3] == '150':
              # this is conditional in case we received a 125
              size = parse150(resp)
          return conn, size
  
      def transfercmd(self, cmd, rest=None):
          """Like ntransfercmd() but returns only the socket."""
          return self.ntransfercmd(cmd, rest)[0]
  
      def login(self, user = '', passwd = '', acct = ''):
          '''Login, default anonymous.'''
          if not user: user = 'anonymous'
          if not passwd: passwd = ''
          if not acct: acct = ''
          if user == 'anonymous' and passwd in ('', '-'):
              # If there is no anonymous ftp password specified
              # then we'll just use anonymous@
              # We don't send any other thing because:
              # - We want to remain anonymous
              # - We want to stop SPAM
              # - We don't want to let ftp sites to discriminate by the user,
              #   host or country.
              passwd = passwd + 'anonymous@'
          resp = self.sendcmd('USER ' + user)
          if resp[0] == '3': resp = self.sendcmd('PASS ' + passwd)
          if resp[0] == '3': resp = self.sendcmd('ACCT ' + acct)
          if resp[0] != '2':
              raise error_reply, resp
          return resp
  
      def retrbinary(self, cmd, callback, blocksize=8192, rest=None):
          """Retrieve data in binary mode.
  
          `cmd' is a RETR command.  `callback' is a callback function is
          called for each block.  No more than `blocksize' number of
          bytes will be read from the socket.  Optional `rest' is passed
          to transfercmd().
  
          A new port is created for you.  Return the response code.
          """
          self.voidcmd('TYPE I')
          conn = self.transfercmd(cmd, rest)
          while 1:
              data = conn.recv(blocksize)
              if not data:
                  break
              callback(data)
          conn.close()
          return self.voidresp()
  
      def retrlines(self, cmd, callback = None):
          '''Retrieve data in line mode.
          The argument is a RETR or LIST command.
          The callback function (2nd argument) is called for each line,
          with trailing CRLF stripped.  This creates a new port for you.
          print_line() is the default callback.'''
          if callback is None: callback = print_line
          resp = self.sendcmd('TYPE A')
          conn = self.transfercmd(cmd)
          fp = conn.makefile('rb')
          while 1:
              line = fp.readline()
              if self.debugging > 2: print '*retr*', repr(line)
              if not line:
                  break
              if line[-2:] == CRLF:
                  line = line[:-2]
              elif line[-1:] == '\n':
                  line = line[:-1]
              callback(line)
          fp.close()
          conn.close()
          return self.voidresp()
  
      def storbinary(self, cmd, fp, blocksize=8192):
          '''Store a file in binary mode.'''
          self.voidcmd('TYPE I')
          conn = self.transfercmd(cmd)
          while 1:
              buf = fp.read(blocksize)
              if not buf: break
              conn.sendall(buf)
          conn.close()
          return self.voidresp()
  
      def storlines(self, cmd, fp):
          '''Store a file in line mode.'''
          self.voidcmd('TYPE A')
          conn = self.transfercmd(cmd)
          while 1:
              buf = fp.readline()
              if not buf: break
              if buf[-2:] != CRLF:
                  if buf[-1] in CRLF: buf = buf[:-1]
                  buf = buf + CRLF
              conn.sendall(buf)
          conn.close()
          return self.voidresp()
  
      def acct(self, password):
          '''Send new account name.'''
          cmd = 'ACCT ' + password
          return self.voidcmd(cmd)
  
      def nlst(self, *args):
          '''Return a list of files in a given directory (default the current).'''
          cmd = 'NLST'
          for arg in args:
              cmd = cmd + (' ' + arg)
          files = []
          self.retrlines(cmd, files.append)
          return files
  
      def dir(self, *args):
          '''List a directory in long form.
          By default list current directory to stdout.
          Optional last argument is callback function; all
          non-empty arguments before it are concatenated to the
          LIST command.  (This *should* only be used for a pathname.)'''
          cmd = 'LIST'
          func = None
          if args[-1:] and type(args[-1]) != type(''):
              args, func = args[:-1], args[-1]
          for arg in args:
              if arg:
                  cmd = cmd + (' ' + arg)
          self.retrlines(cmd, func)
  
      def rename(self, fromname, toname):
          '''Rename a file.'''
          resp = self.sendcmd('RNFR ' + fromname)
          if resp[0] != '3':
              raise error_reply, resp
          return self.voidcmd('RNTO ' + toname)
  
      def delete(self, filename):
          '''Delete a file.'''
          resp = self.sendcmd('DELE ' + filename)
          if resp[:3] in ('250', '200'):
              return resp
          elif resp[:1] == '5':
              raise error_perm, resp
          else:
              raise error_reply, resp
  
      def cwd(self, dirname):
          '''Change to a directory.'''
          if dirname == '..':
              try:
                  return self.voidcmd('CDUP')
              except error_perm, msg:
                  if msg.args[0][:3] != '500':
                      raise
          elif dirname == '':
              dirname = '.'  # does nothing, but could return error
          cmd = 'CWD ' + dirname
          return self.voidcmd(cmd)
  
      def size(self, filename):
          '''Retrieve the size of a file.'''
          # Note that the RFC doesn't say anything about 'SIZE'
          resp = self.sendcmd('SIZE ' + filename)
          if resp[:3] == '213':
              s = resp[3:].strip()
              try:
                  return int(s)
              except (OverflowError, ValueError):
                  return long(s)
  
      def mkd(self, dirname):
          '''Make a directory, return its full pathname.'''
          resp = self.sendcmd('MKD ' + dirname)
          return parse257(resp)
  
      def rmd(self, dirname):
          '''Remove a directory.'''
          return self.voidcmd('RMD ' + dirname)
  
      def pwd(self):
          '''Return current working directory.'''
          resp = self.sendcmd('PWD')
          return parse257(resp)
  
      def quit(self):
          '''Quit, and close the connection.'''
          resp = self.voidcmd('QUIT')
          self.close()
          return resp
  
      def close(self):
          '''Close the connection without assuming anything about it.'''
          if self.file:
              self.file.close()
              self.sock.close()
              self.file = self.sock = None
  
  
  _150_re = None
  
  def parse150(resp):
      '''Parse the '150' response for a RETR request.
      Returns the expected transfer size or None; size is not guaranteed to
      be present in the 150 message.
      '''
      if resp[:3] != '150':
          raise error_reply, resp
      global _150_re
      if _150_re is None:
          import re
          _150_re = re.compile("150 .* \((\d+) bytes\)", re.IGNORECASE)
      m = _150_re.match(resp)
      if not m:
          return None
      s = m.group(1)
      try:
          return int(s)
      except (OverflowError, ValueError):
          return long(s)
  
  
  _227_re = None
  
  def parse227(resp):
      '''Parse the '227' response for a PASV request.
      Raises error_proto if it does not contain '(h1,h2,h3,h4,p1,p2)'
      Return ('host.addr.as.numbers', port#) tuple.'''
  
      if resp[:3] != '227':
          raise error_reply, resp
      global _227_re
      if _227_re is None:
          import re
          _227_re = re.compile(r'(\d+),(\d+),(\d+),(\d+),(\d+),(\d+)')
      m = _227_re.search(resp)
      if not m:
          raise error_proto, resp
      numbers = m.groups()
      host = '.'.join(numbers[:4])
      port = (int(numbers[4]) << 8) + int(numbers[5])
      return host, port
  
  
  def parse229(resp, peer):
      '''Parse the '229' response for a EPSV request.
      Raises error_proto if it does not contain '(|||port|)'
      Return ('host.addr.as.numbers', port#) tuple.'''
  
      if resp[:3] != '229':
          raise error_reply, resp
      left = resp.find('(')
      if left < 0: raise error_proto, resp
      right = resp.find(')', left + 1)
      if right < 0:
          raise error_proto, resp # should contain '(|||port|)'
      if resp[left + 1] != resp[right - 1]:
          raise error_proto, resp
      parts = resp[left + 1:right].split(resp[left+1])
      if len(parts) != 5:
          raise error_proto, resp
      host = peer[0]
      port = int(parts[3])
      return host, port
  
  
  def parse257(resp):
      '''Parse the '257' response for a MKD or PWD request.
      This is a response to a MKD or PWD request: a directory name.
      Returns the directoryname in the 257 reply.'''
  
      if resp[:3] != '257':
          raise error_reply, resp
      if resp[3:5] != ' "':
          return '' # Not compliant to RFC 959, but UNIX ftpd does this
      dirname = ''
      i = 5
      n = len(resp)
      while i < n:
          c = resp[i]
          i = i+1
          if c == '"':
              if i >= n or resp[i] != '"':
                  break
              i = i+1
          dirname = dirname + c
      return dirname
  
  
  def print_line(line):
      '''Default retrlines callback to print a line.'''
      print line
  
  
  def ftpcp(source, sourcename, target, targetname = '', type = 'I'):
      '''Copy file from one FTP-instance to another.'''
      if not targetname: targetname = sourcename
      type = 'TYPE ' + type
      source.voidcmd(type)
      target.voidcmd(type)
      sourcehost, sourceport = parse227(source.sendcmd('PASV'))
      target.sendport(sourcehost, sourceport)
      # RFC 959: the user must "listen" [...] BEFORE sending the
      # transfer request.
      # So: STOR before RETR, because here the target is a "user".
      treply = target.sendcmd('STOR ' + targetname)
      if treply[:3] not in ('125', '150'): raise error_proto  # RFC 959
      sreply = source.sendcmd('RETR ' + sourcename)
      if sreply[:3] not in ('125', '150'): raise error_proto  # RFC 959
      source.voidresp()
      target.voidresp()
  
  
  class Netrc:
      """Class to parse & provide access to 'netrc' format files.
  
      See the netrc(4) man page for information on the file format.
  
      WARNING: This class is obsolete -- use module netrc instead.
  
      """
      __defuser = None
      __defpasswd = None
      __defacct = None
  
      def __init__(self, filename=None):
          if filename is None:
              if "HOME" in os.environ:
                  filename = os.path.join(os.environ["HOME"],
                                          ".netrc")
              else:
                  raise IOError, \
                        "specify file to load or set $HOME"
          self.__hosts = {}
          self.__macros = {}
          fp = open(filename, "r")
          in_macro = 0
          while 1:
              line = fp.readline()
              if not line: break
              if in_macro and line.strip():
                  macro_lines.append(line)
                  continue
              elif in_macro:
                  self.__macros[macro_name] = tuple(macro_lines)
                  in_macro = 0
              words = line.split()
              host = user = passwd = acct = None
              default = 0
              i = 0
              while i < len(words):
                  w1 = words[i]
                  if i+1 < len(words):
                      w2 = words[i + 1]
                  else:
                      w2 = None
                  if w1 == 'default':
                      default = 1
                  elif w1 == 'machine' and w2:
                      host = w2.lower()
                      i = i + 1
                  elif w1 == 'login' and w2:
                      user = w2
                      i = i + 1
                  elif w1 == 'password' and w2:
                      passwd = w2
                      i = i + 1
                  elif w1 == 'account' and w2:
                      acct = w2
                      i = i + 1
                  elif w1 == 'macdef' and w2:
                      macro_name = w2
                      macro_lines = []
                      in_macro = 1
                      break
                  i = i + 1
              if default:
                  self.__defuser = user or self.__defuser
                  self.__defpasswd = passwd or self.__defpasswd
                  self.__defacct = acct or self.__defacct
              if host:
                  if host in self.__hosts:
                      ouser, opasswd, oacct = \
                             self.__hosts[host]
                      user = user or ouser
                      passwd = passwd or opasswd
                      acct = acct or oacct
                  self.__hosts[host] = user, passwd, acct
          fp.close()
  
      def get_hosts(self):
          """Return a list of hosts mentioned in the .netrc file."""
          return self.__hosts.keys()
  
      def get_account(self, host):
          """Returns login information for the named host.
  
          The return value is a triple containing userid,
          password, and the accounting field.
  
          """
          host = host.lower()
          user = passwd = acct = None
          if host in self.__hosts:
              user, passwd, acct = self.__hosts[host]
          user = user or self.__defuser
          passwd = passwd or self.__defpasswd
          acct = acct or self.__defacct
          return user, passwd, acct
  
      def get_macros(self):
          """Return a list of all defined macro names."""
          return self.__macros.keys()
  
      def get_macro(self, macro):
          """Return a sequence of lines which define a named macro."""
          return self.__macros[macro]
  
  
  
  def test():
      '''Test program.
      Usage: ftp [-d] [-r[file]] host [-l[dir]] [-d[dir]] [-p] [file] ...
  
      -d dir
      -l list
      -p password
      '''
  
      if len(sys.argv) < 2:
          print test.__doc__
          sys.exit(0)
  
      debugging = 0
      rcfile = None
      while sys.argv[1] == '-d':
          debugging = debugging+1
          del sys.argv[1]
      if sys.argv[1][:2] == '-r':
          # get name of alternate ~/.netrc file:
          rcfile = sys.argv[1][2:]
          del sys.argv[1]
      host = sys.argv[1]
      ftp = FTP(host)
      ftp.set_debuglevel(debugging)
      userid = passwd = acct = ''
      try:
          netrc = Netrc(rcfile)
      except IOError:
          if rcfile is not None:
              sys.stderr.write("Could not open account file"
                               " -- using anonymous login.")
      else:
          try:
              userid, passwd, acct = netrc.get_account(host)
          except KeyError:
              # no account for host
              sys.stderr.write(
                      "No account -- using anonymous login.")
      ftp.login(userid, passwd, acct)
      for file in sys.argv[2:]:
          if file[:2] == '-l':
              ftp.dir(file[2:])
          elif file[:2] == '-d':
              cmd = 'CWD'
              if file[2:]: cmd = cmd + ' ' + file[2:]
              resp = ftp.sendcmd(cmd)
          elif file == '-p':
              ftp.set_pasv(not ftp.passiveserver)
          else:
              ftp.retrbinary('RETR ' + file, \
                             sys.stdout.write, 1024)
      ftp.quit()
  
  
  if __name__ == '__main__':
      test()
  