more python2 to python3 issues

[codedragon]

Session 7, map (and filter) return an iterator now, not a list:

for each in map(fun, l):
... print(each)
...
14
20
24
34
22
18

If you want the list, you can do

list(map(fun, l))
[14, 20, 24, 34, 22, 18]