python定义类的简单用法

#!/usr/bin/env python
#coding:utf8
 
 
class Hotel(object):
  """docstring for Hotel"""
  def __init__(self, room, cf=1.0, br=15):
    self.room = room
    self.cf = cf
    self.br = br
 
  def cacl_all(self, days=1):
    return (self.room * self.cf + self.br) * days
 
if __name__ == '__main__':
  stdroom = Hotel(200)
  big_room = Hotel(230, 0.9)
  print stdroom.cacl_all()
  print stdroom.cacl_all(2)
  print big_room.cacl_all()
  print big_room.cacl_all(3)