supressing '\n' at the end

[SunX]

Gurus;
I need some help here.  How do you supress the newline char. at the
end of a file.write(str(aString))?  I know you can add a newline by
simply doing file.write(str(aString) + '\n'), but not
file.write(str(aString) - '\n').
Thanks alot
Howard