[Python-ideas] Method chaining notation

[Stephen J. Turnbull]

Ron Adam writes:

 > The operator you want is one for an in place method call.

 >     seq = [] .= extend(get_data()) .= sort()

That looks like anything but Python to me.  If I really thought of
that as a single operation, I'd do something like

    class ScarfNSort(list):
        def __init__(self):
            self.extend(get_data())
            self.sort()

    seq = ScarfNSort()

If it doesn't deserve a class definition, then the repeated references
to 'seq' wouldn't bother me.

N.B. '.=' shouldn't be called "in-place": 'sort' and 'extend' are
already in-place.  The word would be "chain," "cascade," or similar.