Dir() Method Of FTP Class In Python

Method Name:

dir

Method Signature:

dir(directory_name[, …])

Parameters:

  • The dir() method accepts variable number for parameters.
  • When invoked without parameters the function sends the LIST command to the server.
  • When invoked with one or more parameters, if the last parameter is a callback, then all other parameters except the callback function are concatenated to the LIST command separated by a space and the command is sent to the server.
  • If the last parameter passed is a callback function the function is called for each line of output from the server.

 

Return Type:

None

 

Overview:

  • The method dir() prints the directory listing as returned by the FTP command LIST.
  • Among the number of arguments passed to the function if the last argument is a callback function, this function is called for each line of the output from the server.

 

Example:

from ftplib import FTP

 

def dirCallback(line):

    line = "%s **"%line;

    print(line);

 

ftpObject = FTP();

ftpObject.connect(host="anexampleftpserver");

ftpObject.login();

print("Current directory listing:");

ftpObject.dir();

 

fileName = "50MB.zip";

print("Information on the file:%s"%fileName);

ftpObject.dir(fileName);

 

directoryName = "/upload"

print("Information on a specific directory:%s"%directoryName);

ftpObject.dir(directoryName);

 

print("Invoke a non-default callback on everyline for current directory:");

ftpObject.dir(".", dirCallback);

 

Output:

Current directory listing:

-rw-r--r--    1 0        0        52428800 Feb 19  2016 EF.txt

-rw-r--r--    1 0        0          524288 Feb 19  2016 CD.txt

-rw-r--r--    1 0        0         5242880 Feb 19  2016 AB.txt

drwxr-xr-x    2 105      108        561152 Oct 09 09:09 uploadfolder

Information on the file:AB.txt

-rw-r--r--    1 0        0        52428800 Feb 19  2016 AB.txt

Information on a specific directory:/upload

-rw-------    1 105      108       1000000 Oct 09 09:00 tbd.txt

-rw-------    1 105      108        494276 Oct 09 09:09 tbr.txt

Invoke a non-default callback on everyline for current directory:

-rw-r--r--    1 0        0        52428800 Feb 19  2016 EF.txt **

-rw-r--r--    1 0        0          524288 Feb 19  2016 CD.txt **

-rw-r--r--    1 0        0         5242880 Feb 19  2016 AB.txt **

drwxr-xr-x    2 105      108        561152 Oct 09 09:09 uploadfolder **

 


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