How can i convert the `'dead'` string to an unicode string `u'\xde\xad'`?

Doing this:

```
from binascii import unhexlify
out = ''.join(x for x in [unhexlify('de'), unhexlify('ad')])

```

creates a `<type 'str'>` string `'\xde\xad'`

Trying to use the Unicode.join() like this:

```
from binascii import unhexlify
out = ''.join(x for x in [u'', unhexlify('de'), unhexlify('ad')])

```

results in an error:

```
UnicodeDecodeError: 'ascii' codec can't decode byte 0xde in position 0: ordinal not in range(128)

```