Re: List of integers

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From	Chris Angelico <rosuav@gmail.com>
Newsgroups	comp.lang.python
Subject	Re: List of integers
Date	Mon, 14 Dec 2015 11:32:58 +1100
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On Mon, Dec 14, 2015 at 11:24 AM, KP <kai.peters@gmail.com> wrote:
> data = list(f.read(4))
> print data
>
> from a binary file might give
>
> ['\x10', '\x20', '\x12', '\x01']
>
>
> How can I receive this instead?
>
> [0x10, 0x20, 0x12, 0x01]
>
> Thanks for all help!

Try this:

data = [ord(x) for x in f.read(4)]

Note that it won't print out in hexadecimal.

>>> [0x10, 0x20, 0x12, 0x01]
[16, 32, 18, 1]

If you insist on that, try a subclass of int:

class ord(int):
    ord = ord
    def __new__(cls, x):
        return super().__new__(cls, cls.ord(x))
    def __repr__(self): return hex(self)

Then they'll come out in hex.

ChrisA

Thread

List of integers KP <kai.peters@gmail.com> - 2015-12-13 16:24 -0800
  Re: List of integers Chris Angelico <rosuav@gmail.com> - 2015-12-14 11:32 +1100
    Re: List of integers KP <kai.peters@gmail.com> - 2015-12-13 19:11 -0800
  Re: List of integers Terry Reedy <tjreedy@udel.edu> - 2015-12-14 04:56 -0500
    Re: List of integers Steven D'Aprano <steve@pearwood.info> - 2015-12-14 21:37 +1100

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