2011/7/15 Rafael Durán Castañeda <rafadurancastaneda at gmail.com>: > Hello all, > What's the meaning of using i++? Even, does exist ++ operator in python? ++i is legal Python but fairly useless. It's the unary + operator, applied twice. It doesn't increment the variable. Now, i+=1 IS valid Python, and WILL do what a C programmer expects it to. ChrisA