How to work with directories and files with spaces

[s99999999s2003 at yahoo.com]

hi

I am working in unix and i have some directories names with spaces
eg ABC DEF A
how can i work effectively with spaces in directory/file names in
python?

sometimes when i do os.path.join(dir_with_spaces,"-somestring" ) , it
gives me "-somestring"  as the name only...without ABC DEF A
it should give me ABC DEF A-somestring as the directory name

thanks