x = 1

y = 1

dataf = 1.0

def fun1():

    print("fun1")

class ClassB():

    def __init__(self):

        print("i am Class B")

    def ClassBFun1(self):

        print("i am class B fun1")    

class ClassA(ClassB):

    def __init__(self):

        print("i am ClassA")

    def ClassAFun1(self):

        print("I am ClassAfun1")

if __name__ == '__main__':

    print("main")

    #print("%d", x)

    print("His name is %s"%("wangtao"))

    print("He is %d years old"%(25))

    print("His height is %.2f"%(1.83))

    print("His height is %f"%(1.83))

    print("Name:%10s Age:%8d Height:%8.2f"%("wang", 25, 1.83))

    print("Name:%-10s Age:%08d Height:%08.2f"%("wang", 25, 1.83))

    #dataf = format(0.0015, '.2e')

    #print("%f"%(dataf))

    #print("His height is %.2f"%(dataf))

    fun1();

    classAa = ClassA();

    classAa.ClassAFun1();

    classAa.ClassBFun1();

    for i in range(100):

        print(i)