import ftplib
import os
import time

REMOTE_DIR = "/home/mydir"
LOCAL_DIR = "C:\My Documents"
TIME_FORMAT = "%y%m%d"    # YYMMDD, like 030522

def transferFile(listLine):
    # Strips the file name from a line of a
    # directory listing, and gets it from the
    # server.  Depends on filenames
    # with no embedded spaces or extra dots.
    if listLine.endswith('.py'):
        #Split file name on the dot
        splitFileName=remoteFileName.split('.')
        # Add a timestamp
        localFileName="%s_%s.%s" % (splitFileName[0],
                                    time.strftime(TIME_FORMAT),
                                    splitFileName[1])
        # Open a local file for (over)writing, in binary mode.
        # print os.path.join(LOCAL_DIR,localFileName)
        localFile=file(os.path.join(LOCAL_DIR,localFileName), 'wb')
        print remoteFileName
        print localFile
        # Execute the FTP retrieve command, calling
        # the write() function of the local file
        # for each block retrieved from the FTP server
        # BUG: This should work, but I get the following traceback
        f.retrbinary('RETR %s' % remoteFileName, localFile.write)    #<--- Fails
                                                                     #     Here

#        mra.py
#<open file 'D:\My Documents\Work\IA\Miller\MRA\Dev\Backup of remote files\mra_030610.py', mode 'wb' at 0x00886B70>
#Traceback (most recent call last):
#  File "C:\Program Files\ActiveState Komodo 2.3\callkomodo\kdb.py", line 430, in _do_start
#    self.kdb.run(code_ob, locals, locals)
#  File "C:\Python22\lib\bdb.py", line 349, in run
#    exec cmd in globals, locals
#  File "D:\My Documents\Computer World\Python Resources\My Utilities\backup_remote_files.py", line 45, in ?
#    f.retrlines('LIST', transferFile)
#  File "C:\Python22\lib\ftplib.py", line 413, in retrlines
#    callback(line)
#  File "D:\My Documents\Computer World\Python Resources\My Utilities\backup_remote_files.py", line 36, in transferFile
#    f.retrbinary('RETR mra.py', localFile.write)
#  File "C:\Python22\lib\ftplib.py", line 385, in retrbinary
#    conn = self.transfercmd(cmd, rest)
#  File "C:\Python22\lib\ftplib.py", line 346, in transfercmd
#    return self.ntransfercmd(cmd, rest)[0]
#  File "C:\Python22\lib\ftplib.py", line 322, in ntransfercmd
#    host, port = self.makepasv()
#  File "C:\Python22\lib\ftplib.py", line 300, in makepasv
#    host, port = parse227(self.sendcmd('PASV'))
#  File "C:\Python22\lib\ftplib.py", line 572, in parse227
#    raise error_reply, resp
#error_reply: 200 Type set to I.

# The problem is that the self.sendcmd('PASV') call is not getting a 227
# reply from the server.  Rather, it is getting a 200 reply, confirming
# that the type was set to I (Image).


        localFile.flush()
        localFile.close()

f=ftplib.FTP('server', 'user', 'password')
f.cwd(REMOTE_DIR)
# List directory contents, and call the transferFile
# function on each line in the listing
f.retrlines('LIST', transferFile)

f.close()


#================================================
#This style works
#import ftplib
#import os
#import time
#
#REMOTE_DIR = "/home/mydir"
#LOCAL_DIR = "C:\My Documents"
#TIME_FORMAT = "%y%m%d"    # YYMMDD, like 030522
#
#listOfFiles = []
#
#def makeListOfFiles(remoteFileName):
#    # Strips the file name from a line of a
#    # directory listing, and gets file from the
#    # server.  Depends on filenames
#    # with no embedded spaces or extra dots.
#    if remoteFileName.endswith('.py'):
#        listOfFiles.append(remoteFileName)
#
#f=ftplib.FTP('server', 'user', 'password')
#f.cwd(REMOTE_DIR)
## List directory contents, and call the transferFile
## function on each line in the listing
#f.retrlines('NLST', makeListOfFiles)
#print listOfFiles
#
#for remoteFileName in listOfFiles:
#    #Split file name on the dot
#    splitFileName=remoteFileName.split('.')
#    # Add a timestamp
#    localFileName="%s_%s.%s" % (splitFileName[0],
#                                time.strftime(TIME_FORMAT),
#                                splitFileName[1])
#    # Open a local file for (over)writing, in binary mode.
#    # print os.path.join(LOCAL_DIR,localFileName)
#    localFile=file(os.path.join(LOCAL_DIR,localFileName), 'wb')
#
#    # Execute the FTP retrieve command, calling
#    # the write() function of the local file
#    # for each block retrieved from the FTP server
#    f.retrbinary('RETR %s' % remoteFileName, localFile.write)
#    localFile.flush()
#    localFile.close()
#
#f.close()
#
#
#