Python自学成才之路 终于弄清楚类方法，静态方法的区别了

class Person(object):

    num = 0

    def __init__(self, name, age):
        self.name = name
        self.age = age
        Person.classMethod()

    def instanceMathod(self):
        print('name: %s, age = %s'%(self.name, self.age))

    @staticmethod
    def staticMethod():
        print('static method: num = ' + str(Person.num))

    @classmethod
    def classMethod(cls):
        cls.num += 1


person = Person(name='peter', age=18)
person.instanceMathod()
Person.staticMethod()
person.classMethod()

    @staticmethod
    def staticMethod(Person, *args, **kargs):
        pass

    @classmethod
    def classMethod(cls, *args, **kargs):
        pass

class y(object):

    def __init__(self, astring):
        self.s = astring

    @ classmethod
    def fromlist(cls, alist):
        x = cls('')
        x.s = ','.join(str(s) for s in alist)
        return x

    @staticmethod
    def static_method(alist):
        x = y('')
        x.s = ','.join(str(s) for s in alist)
        return x

    def __repr__(self):
        return 'y(%r)' % self.s

y1 = y('xx')
y('xx')
print(y1)
y2 = y.fromlist(range(3))
print(y2)
y3 = y.static_method(range(3))
print(type(y3))
print(y3)

输出：
y('xx')
y('0,1,2')
<class '__main__.y'>
y('0,1,2')

class k(y):
   def __repr__(self):
      return 'k(%r)' % self.s.upper()

   def testSub(self):
       print('k sub')

k1 = k.fromlist(['za','bu'])
print(type(k1))
print(k1)
k1.testSub()
k2 = k.static_method(range(3))
print(type(k2))
print(k2)

输出：
<class '__main__.k'>
k('ZA,BU')
k sub
<class '__main__.y'>
y('0,1,2')