{k.upper() : k * 2 for k in [ 'hello', 'hi', 'good morning' ] if k[0] == 'h'}

_  = dict((x, x * x) for x in range(10))
print(x)

type({x * x for x in range(10)})

def f(*seqs, pad=None):
    seqs = [list(S) for S in seqs]
    while any(seqs):
        yield tuple((S.pop(0) if S else pad) for S in seqs)
s1, s2 = '987', 'xy'
print(list(f(s1, s2)))

a = [1]
a.append(a)
print([*a])

IOError is OSError

def a(z):
    x = 0
    try:
        x += 1
        100/z
        x += 1
    except ZeroDivisionError:
        try:
            x += 1
        finally:
            x += 1
            return 10 * x
    finally:
        x += 1
        return 100 * x
a(0)

from math import log, exp
x = log(exp(7)) + exp(log(3))
print(x)

try:
    try:
        raise IndexError
    except:
        pass
    finally:
        print('1', end='')
finally:
    print('2')