def cmp_rep(x, y):
if x == y:
return 0
# 'all' age group is last
if x == 'all' or y == 'all':
return 1 if x == 'all' else -1
# compare minimum age for group to sort
xa_min = REPORTS_AGE_GROUPS.get(x, (100, 0))[0]
ya_min = REPORTS_AGE_GROUPS.get(y, (100, 0))[0]
return 1 if xa_min > ya_min else -1
