class Parent(object) x = 1 class Child1(Parent): pass class Child2(Parent): pass print Parent.x, Childx, Childx Childx = 2 print parent.x, Childx, Childx parent.x = 3 print Parent.x, Childx, Childx 结果为: 1 1 1 #继承自父类的类属...
print 方法默认调用 sys.stdout.write 方法,即往控制台打印字符串。...
方法一: a = a+bb = a-ba = a-b 方法二: a = a^b b =b^a a = a^b 方法三: a,b = b,a...