def f(x):
    return x * x


r = map(f, [1, 2, 3, 4, 5, 6, 7, 8, 9])
print(r)
print(list(r))


def exchange(a, b):
    t = a
    a = b
    b = t
    return a, b


def pe(a):
    if (a > 10 and a < 20):
        print('pe')
    else:
        print('bbb')


aa = 10
bb = 90
exchange(aa, bb)
pe(aa)
print(aa, bb)