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File Existence Check

Testing to see if a file exists on the FTP server. The GetSizeByName method is a convenient way to check if a file exists. It will return -1 if the file does not exist, otherwise it returns the size of the file in bytes.

 Chilkat Python Module Downloads for Windows, Linux, and MAC OS X

import sys
import chilkat

ftp = chilkat.CkFtp2()

#  Any string unlocks the component for the 1st 30-days.
success = ftp.UnlockComponent("Anything for 30-day trial")
if (success != True):
    print ftp.lastErrorText()
    sys.exit()

ftp.put_Hostname("ftp.***.com")
ftp.put_Username("***")
ftp.put_Password("***")

#  Connect and login to the FTP server.
success = ftp.Connect()
if (success != True):
    print ftp.lastErrorText()
    sys.exit()

#  Set the current remote directory to where the file is located:
success = ftp.ChangeRemoteDir("/something")
if (success != True):
    print ftp.lastErrorText()
    sys.exit()

#  Test to see if the file exists by getting the file size by name.
#  If a -1 is returned, the file does not exist.
fileSize = ftp.GetSizeByName("test123.txt")
if (fileSize < 0):
    print "file does not exist"
else:
    print "file exists and is " + str(fileSize)\
         + " bytes in size"

ftp.Disconnect()
 

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