Store and run Python source encoded in a massive integer

obfuscate.py

obfuscate = lambda code: int(''.join(['{:08b}'.format(i) for i in list(bytes(code.encode()))]), 2)
run = lambda x: exec(bytes([int('{:b}'.format(x)[max(0, i - 8):i], 2) for i in range(len('{:b}'.format(x)) % 8, len('{:b}'.format(x)) + 1, 8) if i > 0]))

a = obfuscate("print('hello')")
b = a * 12
# run(b)  # Will error out
run(b / 12)  # Prints "hello"