python - chr() equivalent returning a bytes object, in py3k

Question

Python 2.x has chr(), which converts a number in the range 0-255 to a byte string with one character with that numeric value, and unichr(), which converts a number in the range 0-0x10FFFF to a Unicode string with one character with that Unicode codepoint. Python 3.x replaces unichr() with chr(), in keeping with its "Unicode strings are default" policy, but I can't find anything that does exactly what the old chr() did. The 2to3 utility (from 2.6) leaves chr calls alone, which is not right in general :(

(This is for parsing and serializing a file format which is explicitly defined in terms of 8-bit bytes.)

Answer 1

Try the following:

b = bytes([x])

For example:

>>> bytes([255])
b'xff'