>>>isinstance (a,int) True>>>isinstance (a,str) False>>> isinstance (a,(str,int,list))#是元组中的一个返回 TrueTrue
TypeError:isinstance() arg2must be atypeortupleof types >>>isinstance(a,(str,int,list))#是元组中的一个 Traceback (most recent call last): File"<pyshell#120>", line1,in<module> isinstance(a,(str,int,list))#是元组中的一个 TypeError:isinstance() arg2must be atypeortupleof types >>...
Example 2: Working of isinstance() with Native Types numbers = [1,2,3] result = isinstance(numbers, list) print(numbers,'instance of list?', result) result = isinstance(numbers, dict)print(numbers,'instance of dict?', result) result = isinstance(numbers, (dict, list))print(numbers,'ins...
print(“Is the data type/class of complexnumExample complex?: “,isinstance(complexnumExample, complex)) print(“Is the data type/class of stringExample str?: “,isinstance(stringExample, str)) print(“Is the data type/class of listExample list?: “,isinstance(listExample, list)) ...
Check if "Hello" is one of the types described in the type parameter: x =isinstance("Hello",(float,int,str,list,dict,tuple)) Try it Yourself » Example Check if y is an instance of myObj: classmyObj: name ="John" y = myObj() ...
isinstance() With Built-In Types As you know, Every value (variable) in Python has a type. In Python, we can use different built-in types such asint,float,list,tuple, strings,dictionary. Most of the time, you want to check the type of value to do some operations. In this case,isins...
函数isinstance()可以判断一个变量的类型,既可以用在Python内置的数据类型如str、list、dict,也可以用在我们自定义的类,它们本质上都是数据类型。 isinstance()用于判断数据类型 isinstance(x, str) 可以判断变量 x 是否是字符串; 代码语言:javascript 代码运行次数:0 ...
compiled function bytecode __defaults__ tuple of any default values for arguments __globals__ global namespace in which this function was defined __annotations__ dict of parameter annotations __kwdefaults__ dict of keyword only parameters with defaults""" return isinstance(object, types.Function...
isinstance() 实例 >>>a = 2 >>> isinstance (a,int) True >>> isinstance (a,str) False >>> isinstance (a,(str,int,list)) # 是元组中的一个返回 True True # isinstance()与type()的区别 class A: pass class B(A): pass isinstance(A(), A) # returns True type(A()) == A...
1. Python数据类型(6个) 1.1 数值型(number) 1.2 字符型(string) 字符串常用方法 转义字符 可迭代性 f-string 1.3 列表(list) 1.4 字典(dictionary) 1.5 集合(set) 1.6 元组(tuple) 1.7 内存视图Memoryview 2. 动态引用、强类型 3. 二元运算符和比较运算 4. 标量类型 5. 三元表达式 ...