[EMAIL PROTECTED] wrote: > hello all > > i am relatively new to python, catching on, but getting stuck on > simple thing: > > i have two string bytes i need to push into a single (short) int, like > so in c: > > temp = strBuf[2]; > > temp = (temp<<7)+(strBuf[1]); > > c code works, but having trouble getting python to perform same > function! > > keep getting type & operator errors (i apparently can't bitshift on > str or int?) > > curious what the best way is to do this, in python... > > i'll stick w/ it & post when i sort it > > > meanwhile, any help greatly appreciated > You should really use the struct module for that type of conversion, but you also need to know that indexing of lists and tuples starts at 0, not 1.
For the specific case that you're discussing, you could convert each character to its corresponding integer value and use shifting and adding with those: temp = (ord(strBuf[1]) << 8) + ord(strBuf[0]) Obviously if the byte order is wrong you would need to reverse the 0 and 1 elements. regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Skype: holdenweb http://del.icio.us/steve.holden ------------------ Asciimercial --------------------- Get on the web: Blog, lens and tag your way to fame!! holdenweb.blogspot.com squidoo.com/pythonology tagged items: del.icio.us/steve.holden/python All these services currently offer free registration! -------------- Thank You for Reading ---------------- -- http://mail.python.org/mailman/listinfo/python-list
