whuch is easiest to read?

[Skaperen]

which of these is easiest to read?

#0

        if t is str:
            return ''.join([chr(c) for c in o])
        if t is unicode:
            return unicode(''.join([chr(c) for c in o]))
        if t is list:
            return o
        if t is tuple:
            return tuple(o)
        if t is set:
            return set(o)
        if t is bytearray:
            return bytearray(o)
        if t is bytes:
            return bytes(bytearray(o))

#1

        s = ''.join([chr(c) for c in o])
        if t is str:       return s
        if t is unicode:   return unicode(s)
        if t is list:      return o
        if t is tuple:     return tuple(o)
        if t is set:       return set(o)
        a = bytearray(o)
        if t is bytearray: return a
        if t is bytes:     return bytes(a)

#2

        s = ''.join([chr(c) for c in o])
        if t is str: return s
        if t is unicode: return unicode(s)
        if t is list: return o
        if t is tuple: return tuple(o)
        if t is set: return set(o)
        a = bytearray(o)
        if t is bytearray: return a
        if t is bytes: return bytes(a)

#3

        if t is str:
                           return ''.join([chr(c) for c in o])
        if t is unicode:
                           return unicode(''.join([chr(c) for c in o]))
        if t is list:
                           return o
        if t is tuple:
                           return tuple(o)
        if t is set:
                           return set(o)
        if t is bytearray:
                           return bytearray(o)
        if t is bytes:
                           return bytes(bytearray(o))