Update a "Programmer's note" about lambda forms and scoping to reflect the availability of nested scoping in Python 2.1 and 2.2.
Update a "Programmer's note" about lambda forms and scoping to reflect
the availability of nested scoping in Python 2.1 and 2.2.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator