What is the equivalent of chr(x) for bytes in python 3?

[Baptiste Lepilleur]

Hi,
I'm looking for the equivalent of the built-in chr(x) function that would
return a bytes type taking an integer as parameter.

The easiest way I found to do this is the function below, but there must be
some simpler way to do that and I must be overlooking something fairly
obvious...

def byte( x ):
...     import io
...     s = io.BytesIO()
...     s.write( bytearray( (x,) ) )
...     return s.getvalue()
...
>>> byte( 12 )
b'\x0c'
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