[Tutor] help making my ftp script more pythony

[as]

Hi all,

I am a long time lurker, first time poster.  Here is a little python script to =
download the latest virus sigs from CA and run them.  It works ok but I know it =
is not very pythony.  If you were going to write a simple FTP download what =
would you of done differently.  I feel the only functionality that I am missing =
is some user feedback during the file transfer.  Which could be done with a =
callback function.

Thanks for any info.

Later,

Troy =20

# Download latest CA Inoculan Personal Edition virus sigs and run.

import ftplib
import win32api
import os

PathList =3D []

def CallBak(DirString):
    Path =3D DirString[56:]
    # print Path
    PathList.append(Path)
    return=20

#Connect to host
try:
    ftp =3D ftplib.FTP('ftpav.cai.com')
except ftplib.all_errors, e:
    print e

#Login
try:
   ftp.login()                 # user anonymous, passwd user@hostname
except ftplib.all_errors, e:
   print e

#Change working directory
try:
   ftp.cwd('pub/ipe')
except ftplib.all_errors, e:
   print e

#Get the directory into PathList
try:
   ftp.dir(CallBak)
except ftplib.all_errors, e:
  print e

PathList.sort()    # sort the list

#Change working directory
try:
   ftp.cwd(PathList[-1])  # choose the last item in the list ie. the most =
recient
except ftplib.all_errors, e:
   print e

PathList =3D []             # clear the list to use again

#Get the directory into PathList
try:
   ftp.dir(CallBak)
except ftplib.all_errors, e:
  print e

PathList.sort()
FileName =3D PathList[-1]  # choose the last item in the list ie. the most =
recient
TempPath =3D win32api.GetEnvironmentVariable('temp')

if os.path.isfile(TempPath+"\\"+FileName):
     try:
          os.remove(TempPath+"\\"+FileName) #it's a file, delete it
     except:
          #probably failed because it is not a normal file
          win32api.SetFileAttributes(TempPath+"\\"+FileName, =
win32con.FILE_ATTRIBUTE_NORMAL)
          os.remove(TempPath+"\\"+FileName) #it's a file, delete it

print "Downloading " + FileName + " to " + TempPath
F =3D open(TempPath+"\\"+FileName, 'w')    =20
ftp.retrbinary('RETR '+FileName, F.write, 1024)
F.close()
print ".....Done....."

# win32api.WinExec(TempPath+"\\"+FileName)      # run the downloaded file

ftp.quit()