在实际写程序中，经常要对变量类型进行判断，除了用type(变量)这种方法外，还可以用isinstance方法判断：

a = 1b = [1,2,3,4]c = (1,2,3,4)d = {'a':1, 'b':2, 'c':3}e = "abc"if isinstance(a,int): print ("a is int")else: print ("a is not int")if isinstance(b,list): print ("b is list")else: print ("b is not list")if isinstance(c,tuple): print ("c is tuple")else: print ("c is not tuple")if isinstance(d,dict): print ("d is dict")else: print ("d is not dict")if isinstance(e,str): print ("d is str")else: print ("d is not str")

更多关于python判断变量是否为int、字符串、列表、元组、字典的方法请查看下面的相关链接