On 21/09/2018 23:29, Viet Nguyen via Python-list wrote:
Hi,I want to add up all of the list elements. But when I use the "map" function, it didn't seem to work as I expect. Could someone point out how "map" can be applied here then? def add_all_elements (*args): total = 0 for i in args: print(type(i)) print("i = %s" % i) print("BEFORE total = %s" % total) total += int(i) print("AFTER total = %s\n" % total) print("FINAL total = %s\n" % total) return total alist = ['2', '09', '49'] ## this one works Okay add_all_elements(*alist)
> [...]
list(map(add_all_elements,alist))
Read the output in both cases and try to figure out what 'args' is. Or you could print out 'args' at the top of your function to lend you a hand. That should help you understand what the difference between the two cases is, and what map() is doing.
Good luck! Thomas -- https://mail.python.org/mailman/listinfo/python-list
