【python】实例-判断用户输入数字的类型

num=input("please input the num: ")
print "the number your input is: "+str(num)
def checktype(num):
    if isinstance(num,(int,long,float,complex)):##isinstance 是判断是否是一个类的实例，如果是返回true
        print str(num)+" type is "+type(num).__name__
    else:
        print str(num)+" type is not sure"
checktype(num)