Python 3 bytes formatting

Question

In Python 3, one can format a string like:

\"{0}, {1}, {2}\".format(1, 2, 3)

But how to format bytes?

b\"{0}, {1}, {2}\".fo         


        

Answer 1

Interestingly .format() doesn't appear to be supported for byte-sequences; as you have demonstrated.

You could use .join() as suggested here: http://bugs.python.org/issue3982

b", ".join([b'1', b'2', b'3'])

There is a speed advantage associated with .join() over using .format() shown by the BDFL himself: http://bugs.python.org/msg180449