[Python-Dev] RFC: PEP 460: Add bytes % args and bytes.format(args) to Python 3.5

[Victor Stinner]

2014/1/10 Juraj Sukop <juraj.sukop at gmail.com>:
> In the case of PDF, the embedding of an image into PDF looks like:
>
>     10 0 obj
>       << /Type /XObject
>          /Width 100
>          /Height 100
>          /Alternates 15 0 R
>          /Length 2167
>       >>
>     stream
>     ...binary image data...
>     endstream
>     endobj

What not building "10 0 obj ... stream" and "endstream endobj" in
Unicode and then encode to ASCII? Example:

data = b''.join((
  ("%d %d obj ... stream" % (10, 0)).encode('ascii'),
  binary_image_data,
  ("endstream endobj").encode('ascii'),
))

Victor