removed $math$, added braces to \item[\tt...]

and py_indent-right

C-c C-l respectively.

zero

(py-electric-colon, py-indent-line): watch out for intervening blank
or comment lines.

(py-indent-line, py-electric-colon): watch for compound statements one
line after another.

#Added a summary of changes

(py-electric-colon): use py-outdent-re instead of hardcoding

(py-indent-line): look for py-outdent-re and outdent a level
accordingly