一、staticmethod(function)
Return a static method for function.
A static method does not receive an implicit first argument. To declare a static method, use this idiom:
class Sing():
@staticmethod
def sayHello():
print "hello world"
def sayNo():
print "no"
if __name__ == ‘__main__‘:
Sing.sayHello()
Sing.sayNo()
Sing.sayNo报错如下：
TypeError: unbound method sayNo() must be called with Sing instance as first argument (got nothing instead)
sayNo()方法非静态方法，需要先将对象Sing实例化才能调用该方法
而sayHello()方法不报错，因为staticmethod修饰
下面方法才是对的：
class Sing():
@staticmethod
def sayHello():
print "hello world"
def sayNo(self):
print "no"
if __name__ == ‘__main__‘:
Sing.sayHello()
sing = Sing()
sing.sayNo()
二、classmethod(function)
Return a class method for function.
A class method receives the class as implicit first argument, just like an instance method receives the instance. To declare a class method, use this idiom:
class Sing():
@classmethod
def sayHello(self):
print "hello world"
def sayNo(self):
print "no"
if __name__ == ‘__main__‘:
Sing.sayHello()
sing = Sing()
sing.sayNo()
注意：staticmethod修饰的方法不需要接self参数，而classmethod修饰的方法则需要接self参数；
三、@property修饰符（新式类特有，新式类即接object定义的类）
修饰为类的属性，如下为不加@property修饰符的类的定义：
class C(object):
def __init__(self):
self._x = None
def getx(self):
return self._x
def setx(self, value):
self._x = value
def delx(self):
del self._x
x = property(getx, setx, delx, "I‘m the ‘x‘ property.")
通过@property修饰符修饰的类的定义：（从Python2.6开始引入setter,deleter,getter属性）
class C(object):
def __init__(self): self._x = None
@property
def x(self):
"""I‘m the ‘x‘ property."""
return self._x
@x.setter
def x(self, value):
self._x = value
@x.deleter
def x(self):
del self._x