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python之常量和变量

发布时间:2019-05-07 08:29编辑:集群主机浏览(144)

    皇家赌场,局地和全局变量:

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      1 # name='lhf'
      2 # def change_name():
      3 #     # global name
      4 #     name='帅了一比'
      5 #     print('change_name',name)
      6 #
      7 #
      8 # change_name()
      9 # print(name)
     10 
     11 # name='lhf'
     12 #
     13 # def change_name():
     14 #     name1='帅了一比'
     15 #     name2='帅了一比'
     16 #     name3='帅了一比'
     17 #     print('change_name',name)
     18 #
     19 # change_name()
     20 # globals
     21 
     22 # NAME = "杠娘"
     23 #
     24 # def yangjian():
     25 #     # NAME = "史正文"
     26 #     global NAME
     27 #     NAME = "小东北"
     28 #     print('我要搞', NAME)
     29 
     30 
     31 #
     32 # def qupengfei():
     33 #     NAME = "基"
     34 #     print('我要搞', NAME)
     35 #
     36 # yangjian()
     37 # qupengfei()
     38 
     39 
     40 
     41 # NAME = "产品经理"
     42 
     43 # def yangjian():
     44 #     # NAME = "史正文"
     45 #     global NAME # 已经声明,NAME就是全局的的那个变量
     46 #     print('我要搞', NAME)
     47 #     NAME = "小东北"  # 修改 全局的变量
     48 #     print('我要搞', NAME)
     49 
     50 
     51 
     52 # def qupengfei():
     53 #     NAME = "基"
     54 #     print('我要搞', NAME)
     55 
     56 
     57 
     58 # 如果函数的内容无global关键字,
     59 #   - 有声明局部变量
     60 # NAME = ["产品经理","廖波湿"]
     61 # def qupengfei():
     62 #     NAME = "自己"
     63 #     print('我要搞', NAME)
     64 # qupengfei()
     65 #   - 无声明局部变量
     66 # NAME = ["产品经理","廖波湿"]
     67 # def qupengfei():
     68 #     NAME.append('XXOO')
     69 #     print('我要搞', NAME)
     70 # qupengfei()
     71 
     72 # 如果函数的内容有global关键字
     73 #   - 有声明局部变量
     74 # NAME = ["产品经理","廖波湿"]
     75 # def qupengfei():
     76 #     global NAME
     77 #     NAME = "自己"
     78 #     print('我要搞', NAME)
     79 # qupengfei()
     80         # 错误示例
     81 # NAME = ["产品经理","廖波湿"]
     82 # def qupengfei():
     83 #     NAME = "自己"
     84 #     global NAME
     85 #     print('我要搞', NAME)
     86 # qupengfei()
     87 #   - 无声明局部变量
     88 # NAME = ["产品经理","廖波湿"]
     89 # def qupengfei():
     90 #     global NAME
     91 #     NAME = ["阿毛"]
     92 #     NAME.append('XXOO')
     93 #     print('我要搞', NAME)
     94 # qupengfei()
     95 
     96 ######## 全局变量变量名大写
     97 ######## 局部变量变量名小写
     98 
     99 
    100 # 优先读取局部变量,能读取全局变量,无法对全局变量重新赋值 NAME=“fff”,
    101 #     但是对于可变类型,可以对内部元素进行操作
    102 # 如果函数中有global关键字,变量本质上就是全局的那个变量,可读取可赋值 NAME=“fff”
    103 # qupengfei()
    104 # yangjian()
    105 
    106 
    107 NAME = ["产品经理","廖波湿"]
    108 
    109 # def yangjian():
    110 #     # NAME = "史正文"
    111 #     global NAME # 已经声明,NAME就是全局的的那个变量
    112 #     print('我要搞', NAME)
    113 #     NAME = "小东北"  # 修改 全局的变量
    114 #     print('我要搞', NAME)
    115 
    116 # def qupengfei():
    117 #     # NAME = "aS"
    118 #     NAME.append('天扎龙')
    119 #     print('我要搞', NAME)
    120 #
    121 # qupengfei()
    122 
    123 
    124 # NAME = ["产品经理","廖波湿"]
    125 # def qupengfei():
    126 #     name = "自己"
    127 #     global NAME
    128 #     print('我要搞', NAME)
    129 # qupengfei()
    130 
    131 # NAME = '海风'
    132 #
    133 # def huangwei():
    134 #     name = "黄伟"
    135 #     print(name)
    136 #     def liuyang():
    137 #         name = "刘洋"
    138 #         print(name)
    139 #         def nulige():
    140 #             name = '沪指花'
    141 #             print(name)
    142 #         print(name)
    143 #         nulige()
    144 #     liuyang()
    145 #     print(name)
    146 #
    147 # huangwei()
    148 
    149 # name = "刚娘"
    150 # 
    151 # def weihou():
    152 #     name = "陈卓"
    153 #     def weiweihou():
    154 #         nonlocal name   # nonlocal,指定上一级变量,如果没有就继续往上直到找到为止
    155 #         name = "冷静"
    156 # 
    157 #     weiweihou()
    158 #     print(name)
    159 # 
    160 # print(name)
    161 # weihou()
    162 # print(name)
    163 # 刚娘
    164 # 冷静
    165 # 刚娘
    

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