What does the PEP's status and structure mean?
Question: What is the PEP status' structure and mean?

These days, I try to write a python2.7 interpreter.

But, I don't know why comparison operator <> arise in python 2.7. (It was not
in python 3.0) Figure out it was in the PEP401. The official declarations is
for future compatibility (import from **future** or somewhat)

Something confusing me is that the status was `April Fool!`

April Fool?

Ref:

  1. <http://www.python.org/dev/peps/pep-0401/>
  2. <http://mail.python.org/pipermail/python-list/2009-April/1202030.html>


Answer: The linked PEP is, as the status suggests, an April Fool's joke; it is not a
real PEP.

There is no distinct `<>` operator; however, in Python 2, the interpreter will
read `<>` as a synonym for `!=`. In Python 3, `<>` is a syntax error.

