> for x in y > > However, what does "for" and "in" mean in this context? It means basically the same as in Englsish Does the following links answer the question ? http://www.ibiblio.org/g2swap/byteofpython/read/for-loop.html http://dsnra.jpl.nasa.gov/software/Python/diveintopython.pdf (page 58) Have a nice day Laurent