In article
<4f7d125a-2713-4b57-a108-2a56ae653...@h3g2000yqe.googlegroups.com>,
Denhua <dennisach...@gmail.com> wrote:
> [omitted]
> f.write("\n".join(newlist))
> f.close()
>
> # output
>
> [root@Inferno html]# python rotate.py
> ['b', 'c', 'd', 'a']
> [root@Inferno html]# python rotate.py
> ['c', 'd', 'a', '\x00\x00\x00\x00\x00\x00\x00\x00b']
> [root@Inferno html]#
>
>
> What's going on? Thanks for your help,
> Dennis
Step 1 in debugging any problem -- try to isolate the smallest possible
test case. In your example, can you figure out if the weirdness is
happening in f.write(), or in what is being passed to f.write()? Try
breaking it down into something like:
> output = "\n".join(newlist)
> print output
> f.write(output)
> f.close()
Next, figure out if it happens whenever you write() to a file, or only
if you write() after you do a truncate().
Once you can answer those questions, you'll have a much smaller problem
to try and solve.
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