Because Python doesn't have constants per se, we use a typographic convention: names of constants are in all caps with underbar as the word separator. They must never be assigned a value except once initially in this section.
# - - - - - M a n i f e s t c o n s t a n t s
id attribute of the radiobutton for a
region with code
plus this suffix.
REG_RADIO_SUFFIX = '_id'