data = (20, 'fkit') print('data是否为列表或元组: ', isinstance(data, (list, tuple))) # True # str不是list或者tuple的子类,输出False print('str是否为list或tuple的子类: ', issubclass(str, (list, tuple))) # str是list或tuple或object的子类,输出True print('str是否为list或tuple或object...
classinfo:表示要判断的类型,可以是tuple、list、dict等序列类型,而不能是str、int等非序列类型。 isinstance()函数的返回值为布尔值,True表示object是classinfo的话,False表示object不是classinfo的派生类。 isinstance()函数的作用在于判断一个对象是不是某种类型。在运行时,我们可以使用它来检查参数类型,以确保函数...
class Foo: a = 5 fooInstance = Foo() print(isinstance(fooInstance, Foo)) print(isinstance(fooInstance, (list, tuple))) print(isinstance(fooInstance, (list, tuple, Foo))) 输出 true flase true Python中的Isinstance:示例#2 numbers = [1, 2, 3] result = isinstance(numbers, list) print(n...
classFoo:a=5fooInstance=Foo()print(isinstance(fooInstance,Foo))print(isinstance(fooInstance,(list,tuple)))print(isinstance(fooInstance,(list,tuple,Foo))) 输出 true flase true Python中的Isinstance:示例#2 numbers=[1,2,3]result=isinstance(numbers,list)print(numbers,'instance of list?',result)res...
'''data= (20,'fkit')print('data是否为列表或元组:', isinstance(data, (list, tuple)))#True#str不是list或者tuple的子类,输出Falseprint('str是否为list或tuple的子类:', issubclass(str, (list, tuple)))#str是list或tuple或object的子类,输出Trueprint('str是否为list或tuple或object的子类', ...
__class__.__mro__ # 如果第二个参数是元组, 则递归调用 if type(C) is tuple: for item in C: r = _isinstance(x, item) if r: return r # 用户自定义检测规则 if hasattr(C, "__instancecheck__"): return C.__instancecheck__(x) # 默认行为 return C in x.__class__.__mro__ ...
To check the data type, we can use the type() function, and to verify if the variable has a type of specific data type, we can use the isinstance() function. Using the isinstance function, we can check if the given variable is an int, float, list, tuple, str, set, dictionary, ...
print(isinstance(a, str)) # True print(isinstance(b, int)) # True print(isinstance(c, list)) # True print(isinstance(d, tuple)) # True print(isinstance(f, Student)) # True 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16....
保证元素之间没有缝隙； 列表中的元素可以是不同类型的 列表的使用方式 list = ["zeruns","blog","...
classinfois a type name or Class name you want to check against the variable. Here you can specifydata typename or Class name. You can also pass multiple classes/types in a tuple format. For example, you can passint,str,list,dict, or any user-created class. ...