What are these tags @ivar @param and @type in python docstring?

Question

The ampoule project uses some tags in docstring, like the javadoc ones.

For example from pool.py line 86:

def start(self, ampChild=None):
    """
    Starts the ProcessPool with a given child protocol.

    @param ampChild: a L{ampoule.child.AMPChild} subclass.
    @type ampChild: L{ampoule.child.AMPChild} subclass
    """

What are these tags, which tool uses it.

Answer 1

Markup for a documentation tool, probably epydoc.

Answer 2

Just for fun I'll note that the Python standard library is using Sphinx/reStructuredText, whose info field lists are similar.

def start(self, ampChild=None):
    """Starts the ProcessPool with a given child protocol.

    :param ampChild: a :class:`ampoule.child.AMPChild` subclass.
    :type ampChild: :class:`ampoule.child.AMPChild` subclass
    """