字典 - 噜啦

### 代码
    dict1 = {}
    dict2 = {'x':1, 'y':2}
    #为字典增加内容
    dict2['z'] = 3
    print(dict2)
	
### 运行

![](https://lula.fun/usr/uploads/2019/09/1326827997.png)

### 课堂联系

优化之前的生肖代码

chinese_zodiac = '猴鸡狗猪鼠牛虎兔龙蛇马羊'
    zodiac_name = (u'摩羯座', u'水瓶座', u'双鱼座', u'白羊座', u'金牛座', u'双子座',
               u'巨蟹座', u'狮子座', u'处女座', u'天秤座', u'天蝎座', u'射手座')
    zodiac_days = ((1, 20), (2, 19), (3, 21), (4, 21), (5, 21), (6, 22),
                  (7, 23), (8, 23), (9, 23), (10, 23), (11, 23), (12, 23))
    
    cz_num = {}
    for i in chinese_zodiac:
        cz_num[i] = 0
    
    
    z_num = {}
    for i in zodiac_name:
        z_num[i] = 0
    
    while True:
        # 用户输入月份和日期
        year = int(input('请输入年份：'))
        int_month = int(input('请输入月份：'))
        int_day = int(input('请输入日期：'))
    
        n=0
        while zodiac_days[n] < (int_month, int_day):
            if int_month == 12 and int_day > 23:
                break
            n += 1
        #输出生肖和星座
        print(zodiac_name[n])
        print('%s 年的生肖是 %s' %(year, chinese_zodiac[year % 12]))
    
        cz_num[chinese_zodiac[year % 12]] += 1
        z_num[zodiac_name[n]] += 1
    
        #输出生肖和星座的统计信息
        for each_key in cz_num.keys():
            print('生肖 %s 有 %d 个'%(each_key, cz_num[each_key]))
    
        for each_key in z_num.keys():
            print('星座 %s 有 %d 个' %(each_key,z_num[each_key]))
    
    
### 运行

![](https://lula.fun/usr/uploads/2019/09/3470955005.png)

......

![](https://lula.fun/usr/uploads/2019/09/1293456395.png)