n = None
t = True
f = False

n
t
f

if n:
    t
else:
    f


def foo():
    n = None
    t = True
    f = False

    n
    t
    f

    if n:
        t
    else:
        f

    not n
    not t
    not f

    if t == f:
        t
    else:
        f

    if t is not f:
        t
    else:
        f

    w = 2
    x = 3
    y = 4
    z = 5
    17
    -3
    47164510561934056134523419250 # Too big
    x < y
    if x < w:
        x
        y
    else:
        w
        z
    if unknown():
        v = 10
    else:
        v = 20
    if v > 15:
        v
    else:
        v

def strings():
    version = "3.8 alpha"
    "a string"
    if version >= "3":
        ":)"
    else:
        ":("