在Python中处理名义变量的不同方法

variables = {'var1': 10, 'var2': 'hello', 'var3': True}
print(variables['var1'])  # 输出：10
print(variables['var2'])  # 输出：hello
print(variables['var3'])  # 输出：True

class NominalVariable:
    def __init__(self, value):
        self.value = value
    
    def get_value(self):
        return self.value
    
    def set_value(self, new_value):
        self.value = new_value

var1 = NominalVariable(10)
var2 = NominalVariable('hello')
var3 = NominalVariable(True)

print(var1.get_value())  # 输出：10
print(var2.get_value())  # 输出：hello
print(var3.get_value())  # 输出：True

var1.set_value(20)
print(var1.get_value())  # 输出：20

from enum import Enum

class NominalVariable(Enum):
    VAR1 = 10
    VAR2 = 'hello'
    VAR3 = True

print(NominalVariable.VAR1)  # 输出：NominalVariable.VAR1
print(NominalVariable.VAR2)  # 输出：NominalVariable.VAR2
print(NominalVariable.VAR3)  # 输出：NominalVariable.VAR3
print(NominalVariable.VAR1.value)  # 输出：10
print(NominalVariable.VAR2.value)  # 输出：hello
print(NominalVariable.VAR3.value)  # 输出：True