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From: Grant Edwards <invalid@invalid.invalid>
Newsgroups: comp.lang.python
Subject: Re: Problems using struct pack/unpack in files, and reading them.
Date: Fri, 13 Nov 2015 21:17:59 +0000 (UTC)
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On 2015-11-13, Ian Kelly <ian.g.kelly@gmail.com> wrote:

> Either retain the read data between calls, or call seek(0) before
> reading it again.

It has always saddened me that Python files don't have a rewind()
method.  On Unix, calling rewind() is the same as calling seek(0), so
it's utterly pointless except as an amusing anachronistic name: it
always made me smile when called rewind() on a file in a filesystem on
a hard-drive.  Interestingly, you can't you can't (and never could)
use rewind() to rewind a tape. You use an ioctl() system call for
that.

-- 
Grant Edwards               grant.b.edwards        Yow! HUGH BEAUMONT died
                                  at               in 1982!!
                              gmail.com