#Range
numbers = range(1,21)
print numbers

sum=0
for counter in numbers:
    sum= sum + counter
print "number sum", + sum
#Lists
my_names=["Joe","Bob", "Ned", "Jil"]
print my_names[0]
print my_names[1]
print my_names[2]
print my_names[3]
print my_names[-4]