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Date: Wed, 15 Jun 2011 22:48:35 +1000
Subject: Re: integer to binary 0-padded
From: Chris Angelico <rosuav@gmail.com>
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:7692

On Wed, Jun 15, 2011 at 10:29 PM, Olivier LEMAIRE
<m.olivier.lemaire@gmail.com> wrote:
> =A0 =A0b =3D str(bin(number))[2:]
> =A0 =A0if len(b) !=3Dsize:
> =A0 =A0 =A0 =A0b =3D (size-len(b))*"0"+b

You don't need the str() there as bin() already returns a number.
Here's a relatively trivial simplification - although it does make the
code more cryptic:

b =3D (size*"0"+bin(number)[2:])[-size:]

After typing this up, I saw Daniel's post, which is rather better. Go
with that one for zero-filling; mine's more general though, you can
pad with other tokens.

ChrisA