Can anyone please help me in understanding the following python code

[Chris Angelico]

On Fri, May 31, 2013 at 3:43 PM, Cameron Simpson <cs at zip.com.au> wrote:
> On 30May2013 21:54, bhk755 at gmail.com <bhk755 at gmail.com> wrote:
> | One final question, Is there a way to edit the message once it has been posted?
>
> Essentially, no. If there's some error in a post, reply to it
> yourself with a correction. Transparency is a good thing. Revisionist
> history pretty much is not.

Once your email or newsgroup post is sent, assume that it's also been
received; at very least, you won't be far wrong. You'll sometimes see
a response within minutes from someone who saw your post within
seconds.

ChrisA