翠屏阿姨

class Father:#2.7版本的老式类 def __init__(self): pass def function(self): print(type(self)) print(isinstance(self, Son)) print(isinstance(self, Father)) print(self.mlist) class Son(Father):

在工作中，回调函数使用的场景是非常多的，下面的例子程序利用了python的属性机制构建了一个回调函数 class Callback: def __init__(self, instance, function_name): self.instance = instance self.function_name = function_name def action(self, par

class Test: def __init__(self): self.f_list = [] def register(self, function): if function in self.f_list: pass else: self.f_list.append(function) def do_test(self): params = []

有如下继承关系： #python 2.7 class GrandFather: def __init__(self): print('grandfather') print('---{}\'s __init__ with addr: {}'.format(self.__class__.__name__, self))

有如下函数： def gen(): li = [1, 2, 3, 4] for i in li: yield i a = gen() try: while True: print(a.next()) except StopIteration: print('generator ({}) has finished.'.format('a')) print(gen) print(

今天在思考python表推导的语法的时候，很好奇这样的结果： a = [ x for x in [1, 2, 3] ] b = ( x for x in [1, 2, 3] ) print('a type: {}'.format(type(a))) print('b type: {}'.format(type(b)))输出： a type: b type: 感觉[和]两个符号表示列表，那么

有如下例子程序 a = [1, 2, 3] b = (1, 2, 3) if isinstance(a, (list, tuple)): print('1.ok') else: print('1.error') if isinstance(b, (list, tuple)): print('2.ok') else: print('2.error') if isinstance(a,