python - FTPLIB not able to access the DSNAME -

this simple , assuming flaws @ end. using ftplib access mainframe. after entering through credentials, have go in dsname , see list of files under it..

the code :

ftp.dir("abcd.tr.rtyp4573.reqw3024") ftp.retrlines("list") 

however getting error :

error_perm: 550 no data sets found. 

after banging head around here , there , have found solution. , try verbose can since might others.

import ftplib  ftplib import *  ftp = ftplib.ftp('xyz.tpt.com','abcdef','abcdef')  ftp.retrlines('list')  ftp.dir() 

the last 2 commands gives name of dsname's currently. both can used interchangingly (is word !!!! )

ftp.sendcmd('pwd') 

provides name of "present working directory".

ftp.cwd("'psqw.cv.rrrr67.rety890'") 

the above command change working direcoty. please please use quotes inside quotes.

ftp.retrlines('list') 

see file listing........