#lists
xs = [10,20,30,40]
print(xs)

[10, 20, 30, 40]

#tuples
ys = ("A",430)

counts = [("A",430),("B",230)]

len(xs)

4

xs[2]

30

xs[1:3]

[20, 30]

xs.append(60)

xs

[10, 20, 30, 40, 60]

for x in xs:
    print(x)

10
20
30
40
60

sum = 0
for x in xs:
    sum = sum + x
print(sum)

160

# conditional statement; sum the odd numbers in a list
zs = [1,2,3,4,5,6,7,8,9,10]
sum = 0
for z in zs:
    if z%2 == 1:
        sum = sum + z
print(sum)

25

def sum_odd(zs):
    sum = 0
    for z in zs:
        if z%2 == 1:
            sum = sum + z
    return sum

answer = sum_odd([1,2,3,4,5,6,7,8,9,10])
print(answer)

25

answer = sum_odd([36,91,100,41])
print(answer)

132