I thought I had the difference between 'zip' and 'map' sorted but when I try to fill missing entries with something other than 'None'. I do not seem to be able to get it to work - any pointers appreciated.
Richard lista = ['a1', 'a2'] listb = ['b10', 'b11','b12' ,'b13'] for x,y in zip(lista, listb): # Fine Truncates as expected print "ZIP:", x, "<<x y>>", y for x,y in map(None, lista, listb): # Also fine - extends as expected print "MAP:", x, "<<x y>>", y for x,y in map("N/A", lista, listb): ########## Fails - Can not call a 'str' print "MAP:", x, "<<x y>>", y def fillwith(fillchars): return fillchars for x,y in map(fillwith("N/A"), lista, listb): ########## Fails also - Can not call a 'str' print "MAP:", x, "<<x y>>", y -- http://mail.python.org/mailman/listinfo/python-list