isfile . is dir

[kay c]

Hi all,
I'm testing wether or not files in listdir() are files or dirs.
What am I doing that all jar files are not recognized as files?

for x in os.listdir(SRCDIR +'/jar'):	    
            if os.path.isfile(x):
                    print 'file '+ x		    
	            copy(x,WEB_SERVER_PATH+'/htdocs/jar/netboss')
            elif os.path.isdir(x):
		    print 'dir '+ x
	    else:
		    print 'unknow' + x


*********output******
dir 3rdparty
Unknown AdminEJB.jar
Unknown buildit.jar
Unknown datastore.jar
Unknown installhelp.jar
Unknown NBConsoleEJB.jar
Unknown NBJNLP.war
Unknown nbjstoredprocedures.jar
Unknown NBSecurityEJB.jar
Unknown ngconsole.jar
Unknown ngexternal.jar
Unknown ngguicomp.jar
Unknown nginstall.jar
Unknown ngmodel.jar
Unknown NGPersistenceEJB.jar
Unknown ngshared.jar
Unknown nmclientshared.jar
Unknown nmmodclient.jar
Unknown nmmonclient.jar
Unknown nmpresentation.jar
Unknown server.jar
Unknown ServiceManager.war

Thanks,
Kay