(py-indent-line): take an optional universal argument which says to

(py-indent-line): take an optional universal argument which says to
defeat extra outdentation for block closing statements (return, raise,
break, continue, pass).

(py-compute-indentation): extra argument to honor block closing
statements.

(py-electric-colon, py-indent-region): use py-compute-indentation's
extra argument

(py-statement-closes-block-p): `pass' treated as a block closing
statement.