import cost h = cost.hour() d = cost.day() print 'Total cost is',cost.calc_cost(h,d)
from cost import hour, day, calc_cost h = hour() d = day() print 'Total cost is', calc_cost(h, d)
from cost import hour, day, calc_cost h = hour() d = day() print "Total cost is", calc_cost(h, d)
import cost h = cost.hour() d = cost.day() print 'Total cost is', cost.calc_cost(h, d)