python - 如何在 Python 中声明一个静态属性？

Question

如何在 Python 中声明静态属性？

这里写了我如何声明一个方法: Static methods in Python?

Answer 1

在 Python 中在类级别定义的所有变量都被认为是静态的

class Example:
    Variable = 2           # static variable

print Example.Variable     # prints 2   (static variable)

# Access through an instance
instance = Example()
print instance.Variable    # still 2  (ordinary variable)


# Change within an instance 
instance.Variable = 3      #(ordinary variable)
print instance.Variable    # 3   (ordinary variable)
print Example.Variable     # 2   (static variable)


# Change through Class 
Example.Variable = 5       #(static variable)
print instance.Variable    # 3  (ordinary variable)
print Example.Variable     # 5  (static variable)

您的类中可以有两个不同的变量在同一个名称下(一个是静态的，一个是普通的)。不要混淆。