{"id":1078193,"date":"2025-01-08T12:09:18","date_gmt":"2025-01-08T04:09:18","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1078193.html"},"modified":"2025-01-08T12:09:21","modified_gmt":"2025-01-08T04:09:21","slug":"%e5%9c%a8python%e4%b8%8a%e5%a6%82%e4%bd%95%e6%9f%a5%e7%9c%8b%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1078193.html","title":{"rendered":"\u5728Python\u4e0a\u5982\u4f55\u67e5\u770b\u6570\u636e\u7c7b\u578b"},"content":{"rendered":"

\"\u5728Python\u4e0a\u5982\u4f55\u67e5\u770b\u6570\u636e\u7c7b\u578b\"<\/p>\n

\u5728Python\u4e0a\u67e5\u770b\u6570\u636e\u7c7b\u578b\u7684\u65b9\u6cd5\u4e3b\u8981\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1a\u4f7f\u7528type()<\/code>\u51fd\u6570\u3001\u4f7f\u7528isinstance()<\/code>\u51fd\u6570\u3001\u4f7f\u7528__class__<\/code>\u5c5e\u6027<\/strong>\u3002\u5728\u65e5\u5e38\u7684\u7f16\u7a0b\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u4f1a\u7ecf\u5e38\u9700\u8981\u77e5\u9053\u53d8\u91cf\u7684\u6570\u636e\u7c7b\u578b\uff0c\u4ee5\u4fbf\u8fdb\u884c\u76f8\u5e94\u7684\u64cd\u4f5c\u3002\u5176\u4e2d\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528type()<\/code>\u51fd\u6570\uff0c\u5b83\u53ef\u4ee5\u76f4\u63a5\u8fd4\u56de\u53d8\u91cf\u7684\u6570\u636e\u7c7b\u578b\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u4e3e\u4f8b\u8bf4\u660e\u5b83\u4eec\u7684\u4f7f\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528type()<\/code>\u51fd\u6570<\/h3>\n<\/p>\n

type()<\/code>\u51fd\u6570\u662fPython\u4e2d\u6700\u5e38\u7528\u7684\u67e5\u770b\u6570\u636e\u7c7b\u578b\u7684\u65b9\u6cd5\u3002\u5b83\u53ef\u4ee5\u8fd4\u56de\u53d8\u91cf\u7684\u7c7b\u578b\uff0c\u4fbf\u4e8e\u6211\u4eec\u5728\u7f16\u7a0b\u4e2d\u8fdb\u884c\u76f8\u5e94\u7684\u5224\u65ad\u548c\u5904\u7406\u3002\u4f7f\u7528type()<\/code>\u51fd\u6570\u7684\u65b9\u6cd5\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u8981\u5c06\u53d8\u91cf\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9type()<\/code>\u51fd\u6570\u5373\u53ef\u3002<\/p>\n<\/p>\n

# \u793a\u4f8b<\/p>\n
a = 10<\/p>\n
print(type(a))  # \u8f93\u51fa\uff1a<class 'int'><\/p>\n
b = 3.14<\/p>\n
print(type(b))  # \u8f93\u51fa\uff1a<class 'float'><\/p>\n
c = "Hello, world!"<\/p>\n
print(type(c))  # \u8f93\u51fa\uff1a<class 'str'><\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e09\u4e2a\u53d8\u91cfa<\/code>\u3001b<\/code>\u548cc<\/code>\uff0c\u5206\u522b\u4e3a\u6574\u6570\u3001\u6d6e\u70b9\u6570\u548c\u5b57\u7b26\u4e32\u3002\u901a\u8fc7\u4f7f\u7528type()<\/code>\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u5f88\u5bb9\u6613\u5730\u67e5\u770b\u8fd9\u4e9b\u53d8\u91cf\u7684\u6570\u636e\u7c7b\u578b\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528isinstance()<\/code>\u51fd\u6570<\/h3>\n<\/p>\n
isinstance()<\/code>\u51fd\u6570\u4e5f\u662fPython\u4e2d\u5e38\u7528\u7684\u67e5\u770b\u6570\u636e\u7c7b\u578b\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002\u4e0etype()<\/code>\u51fd\u6570\u4e0d\u540c\u7684\u662f\uff0cisinstance()<\/code>\u51fd\u6570\u7528\u4e8e\u5224\u65ad\u4e00\u4e2a\u53d8\u91cf\u662f\u5426\u662f\u67d0\u79cd\u6570\u636e\u7c7b\u578b\u7684\u5b9e\u4f8b\u3002\u5b83\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff0c\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u8981\u68c0\u67e5\u7684\u53d8\u91cf\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u8981\u68c0\u67e5\u7684\u7c7b\u578b\u3002\u5982\u679c\u53d8\u91cf\u662f\u8be5\u7c7b\u578b\u7684\u5b9e\u4f8b\uff0cisinstance()<\/code>\u51fd\u6570\u8fd4\u56deTrue<\/code>\uff0c\u5426\u5219\u8fd4\u56deFalse<\/code>\u3002<\/p>\n<\/p>\n
# \u793a\u4f8b<\/p>\n
a = 10<\/p>\n
print(isinstance(a, int))  # \u8f93\u51fa\uff1aTrue<\/p>\n
b = 3.14<\/p>\n
print(isinstance(b, float))  # \u8f93\u51fa\uff1aTrue<\/p>\n
c = "Hello, world!"<\/p>\n
print(isinstance(c, str))  # \u8f93\u51fa\uff1aTrue<\/p>\n
d = [1, 2, 3]<\/p>\n
print(isinstance(d, list))  # \u8f93\u51fa\uff1aTrue<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528isinstance()<\/code>\u51fd\u6570\u6765\u5224\u65ad\u53d8\u91cfa<\/code>\u3001b<\/code>\u3001c<\/code>\u548cd<\/code>\u662f\u5426\u5206\u522b\u662f\u6574\u6570\u3001\u6d6e\u70b9\u6570\u3001\u5b57\u7b26\u4e32\u548c\u5217\u8868\u3002\u7ed3\u679c\u8868\u660e\uff0c\u6240\u6709\u7684\u5224\u65ad\u90fd\u662f\u6b63\u786e\u7684\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528__class__<\/code>\u5c5e\u6027<\/h3>\n<\/p>\n
\u9664\u4e86type()<\/code>\u548cisinstance()<\/code>\u51fd\u6570\u4e4b\u5916\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528\u53d8\u91cf\u7684__class__<\/code>\u5c5e\u6027\u6765\u67e5\u770b\u6570\u636e\u7c7b\u578b\u3002__class__<\/code>\u5c5e\u6027\u662fPython\u4e2d\u6240\u6709\u5bf9\u8c61\u90fd\u5177\u6709\u7684\u4e00\u4e2a\u5185\u7f6e\u5c5e\u6027\uff0c\u5b83\u5b58\u50a8\u4e86\u5bf9\u8c61\u7684\u7c7b\u578b\u4fe1\u606f\u3002<\/p>\n<\/p>\n
# \u793a\u4f8b<\/p>\n
a = 10<\/p>\n
print(a.__class__)  # \u8f93\u51fa\uff1a<class 'int'><\/p>\n
b = 3.14<\/p>\n
print(b.__class__)  # \u8f93\u51fa\uff1a<class 'float'><\/p>\n
c = "Hello, world!"<\/p>\n
print(c.__class__)  # \u8f93\u51fa\uff1a<class 'str'><\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u53d8\u91cfa<\/code>\u3001b<\/code>\u548cc<\/code>\u7684__class__<\/code>\u5c5e\u6027\u6765\u67e5\u770b\u5b83\u4eec\u7684\u6570\u636e\u7c7b\u578b\u3002\u7ed3\u679c\u4e0e\u4f7f\u7528type()<\/code>\u51fd\u6570\u7684\u7ed3\u679c\u662f\u76f8\u540c\u7684\u3002<\/p>\n<\/p>\n
\u56db\u3001\u7ed3\u5408\u4f7f\u7528type()<\/code>\u548cisinstance()<\/code>\u51fd\u6570<\/h3>\n<\/p>\n
\u5728\u5b9e\u9645\u7f16\u7a0b\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u7ed3\u5408\u4f7f\u7528type()<\/code>\u548cisinstance()<\/code>\u51fd\u6570\u6765\u8fdb\u884c\u66f4\u52a0\u590d\u6742\u7684\u6570\u636e\u7c7b\u578b\u68c0\u67e5\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528type()<\/code>\u51fd\u6570\u6765\u83b7\u53d6\u53d8\u91cf\u7684\u7c7b\u578b\uff0c\u7136\u540e\u4f7f\u7528isinstance()<\/code>\u51fd\u6570\u6765\u5224\u65ad\u53d8\u91cf\u662f\u5426\u662f\u67d0\u4e2a\u57fa\u7c7b\u7684\u5b9e\u4f8b\u3002<\/p>\n<\/p>\n
# \u793a\u4f8b<\/p>\n
class Animal:<\/p>\n
    pass<\/p>\n
class Dog(Animal):<\/p>\n
    pass<\/p>\n
d = Dog()<\/p>\n
print(type(d))  # \u8f93\u51fa\uff1a<class '__mAI<\/a>n__.Dog'><\/p>\n
print(isinstance(d, Dog))  # \u8f93\u51fa\uff1aTrue<\/p>\n
print(isinstance(d, Animal))  # \u8f93\u51fa\uff1aTrue<\/p>\n
print(isinstance(d, object))  # \u8f93\u51fa\uff1aTrue<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u57fa\u7c7bAnimal<\/code>\u548c\u4e00\u4e2a\u6d3e\u751f\u7c7bDog<\/code>\uff0c\u7136\u540e\u521b\u5efa\u4e86\u4e00\u4e2aDog<\/code>\u7c7b\u7684\u5b9e\u4f8bd<\/code>\u3002\u901a\u8fc7\u7ed3\u5408\u4f7f\u7528type()<\/code>\u548cisinstance()<\/code>\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u67e5\u770bd<\/code>\u7684\u7c7b\u578b\uff0c\u5e76\u5224\u65ad\u5b83\u662f\u5426\u662fDog<\/code>\u3001Animal<\/code>\u548cobject<\/code>\u7c7b\u7684\u5b9e\u4f8b\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u67e5\u770b\u590d\u6742\u6570\u636e\u7ed3\u6784\u7684\u7c7b\u578b<\/h3>\n<\/p>\n
\u5728\u5b9e\u9645\u7f16\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u590d\u6742\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5982\u5217\u8868\u3001\u5b57\u5178\u3001\u5143\u7ec4\u7b49\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u524d\u9762\u4ecb\u7ecd\u7684\u65b9\u6cd5\u6765\u67e5\u770b\u8fd9\u4e9b\u590d\u6742\u6570\u636e\u7ed3\u6784\u7684\u7c7b\u578b\u3002<\/p>\n<\/p>\n
# \u793a\u4f8b<\/p>\n
list_var = [1, 2, 3]<\/p>\n
print(type(list_var))  # \u8f93\u51fa\uff1a<class 'list'><\/p>\n
print(isinstance(list_var, list))  # \u8f93\u51fa\uff1aTrue<\/p>\n
dict_var = {'a': 1, 'b': 2}<\/p>\n
print(type(dict_var))  # \u8f93\u51fa\uff1a<class 'dict'><\/p>\n
print(isinstance(dict_var, dict))  # \u8f93\u51fa\uff1aTrue<\/p>\n
tuple_var = (1, 2, 3)<\/p>\n
print(type(tuple_var))  # \u8f93\u51fa\uff1a<class 'tuple'><\/p>\n
print(isinstance(tuple_var, tuple))  # \u8f93\u51fa\uff1aTrue<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5217\u8868list_var<\/code>\u3001\u4e00\u4e2a\u5b57\u5178dict_var<\/code>\u548c\u4e00\u4e2a\u5143\u7ec4tuple_var<\/code>\u3002\u901a\u8fc7\u4f7f\u7528type()<\/code>\u548cisinstance()<\/code>\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u67e5\u770b\u8fd9\u4e9b\u590d\u6742\u6570\u636e\u7ed3\u6784\u7684\u7c7b\u578b\u3002<\/p>\n<\/p>\n
\u516d\u3001\u67e5\u770b\u81ea\u5b9a\u4e49\u7c7b\u7684\u7c7b\u578b<\/h3>\n<\/p>\n
\u5728\u5b9e\u9645\u7f16\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u5b9a\u4e49\u4e00\u4e9b\u81ea\u5b9a\u4e49\u7c7b\uff0c\u5e76\u521b\u5efa\u8fd9\u4e9b\u7c7b\u7684\u5b9e\u4f8b\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u524d\u9762\u4ecb\u7ecd\u7684\u65b9\u6cd5\u6765\u67e5\u770b\u81ea\u5b9a\u4e49\u7c7b\u7684\u7c7b\u578b\u3002<\/p>\n<\/p>\n
# \u793a\u4f8b<\/p>\n
class MyClass:<\/p>\n
    pass<\/p>\n
obj = MyClass()<\/p>\n
print(type(obj))  # \u8f93\u51fa\uff1a<class '__main__.MyClass'><\/p>\n
print(isinstance(obj, MyClass))  # \u8f93\u51fa\uff1aTrue<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u81ea\u5b9a\u4e49\u7c7bMyClass<\/code>\uff0c\u5e76\u521b\u5efa\u4e86\u4e00\u4e2aMyClass<\/code>\u7c7b\u7684\u5b9e\u4f8bobj<\/code>\u3002\u901a\u8fc7\u4f7f\u7528type()<\/code>\u548cisinstance()<\/code>\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u67e5\u770bobj<\/code>\u7684\u7c7b\u578b\uff0c\u5e76\u5224\u65ad\u5b83\u662f\u5426\u662fMyClass<\/code>\u7c7b\u7684\u5b9e\u4f8b\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u67e5\u770b\u591a\u91cd\u7ee7\u627f\u7c7b\u7684\u7c7b\u578b<\/h3>\n<\/p>\n
\u5728Python\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u5177\u6709\u591a\u91cd\u7ee7\u627f\u7684\u7c7b\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u524d\u9762\u4ecb\u7ecd\u7684\u65b9\u6cd5\u6765\u67e5\u770b\u591a\u91cd\u7ee7\u627f\u7c7b\u7684\u7c7b\u578b\uff0c\u5e76\u5224\u65ad\u5b9e\u4f8b\u662f\u5426\u662f\u8fd9\u4e9b\u7c7b\u7684\u5b9e\u4f8b\u3002<\/p>\n<\/p>\n
# \u793a\u4f8b<\/p>\n
class Base1:<\/p>\n
    pass<\/p>\n
class Base2:<\/p>\n
    pass<\/p>\n
class Derived(Base1, Base2):<\/p>\n
    pass<\/p>\n
obj = Derived()<\/p>\n
print(type(obj))  # \u8f93\u51fa\uff1a<class '__main__.Derived'><\/p>\n
print(isinstance(obj, Derived))  # \u8f93\u51fa\uff1aTrue<\/p>\n
print(isinstance(obj, Base1))  # \u8f93\u51fa\uff1aTrue<\/p>\n
print(isinstance(obj, Base2))  # \u8f93\u51fa\uff1aTrue<\/p>\n
print(isinstance(obj, object))  # \u8f93\u51fa\uff1aTrue<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e24\u4e2a\u57fa\u7c7bBase1<\/code>\u548cBase2<\/code>\uff0c\u4ee5\u53ca\u4e00\u4e2a\u6d3e\u751f\u7c7bDerived<\/code>\uff0cDerived<\/code>\u7c7b\u540c\u65f6\u7ee7\u627f\u4e86Base1<\/code>\u548cBase2<\/code>\u3002\u901a\u8fc7\u4f7f\u7528type()<\/code>\u548cisinstance()<\/code>\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u67e5\u770bobj<\/code>\u7684\u7c7b\u578b\uff0c\u5e76\u5224\u65ad\u5b83\u662f\u5426\u662fDerived<\/code>\u3001Base1<\/code>\u3001Base2<\/code>\u548cobject<\/code>\u7c7b\u7684\u5b9e\u4f8b\u3002<\/p>\n<\/p>\n
\u516b\u3001\u67e5\u770b\u5d4c\u5957\u6570\u636e\u7ed3\u6784\u7684\u7c7b\u578b<\/h3>\n<\/p>\n
\u5728\u5b9e\u9645\u7f16\u7a0b\u4e2d\uff0c\u6211\u4eec\u6709\u65f6\u4f1a\u9047\u5230\u4e00\u4e9b\u5d4c\u5957\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5982\u5217\u8868\u4e2d\u5305\u542b\u5b57\u5178\u3001\u5b57\u5178\u4e2d\u5305\u542b\u5217\u8868\u7b49\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u524d\u9762\u4ecb\u7ecd\u7684\u65b9\u6cd5\u6765\u67e5\u770b\u8fd9\u4e9b\u5d4c\u5957\u6570\u636e\u7ed3\u6784\u7684\u7c7b\u578b\u3002<\/p>\n<\/p>\n
# \u793a\u4f8b<\/p>\n
nested_list = [{'a': 1}, {'b': 2}]<\/p>\n
print(type(nested_list))  # \u8f93\u51fa\uff1a<class 'list'><\/p>\n
print(isinstance(nested_list, list))  # \u8f93\u51fa\uff1aTrue<\/p>\n
nested_dict = {'key1': [1, 2], 'key2': [3, 4]}<\/p>\n
print(type(nested_dict))  # \u8f93\u51fa\uff1a<class 'dict'><\/p>\n
print(isinstance(nested_dict, dict))  # \u8f93\u51fa\uff1aTrue<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5d4c\u5957\u5217\u8868nested_list<\/code>\u548c\u4e00\u4e2a\u5d4c\u5957\u5b57\u5178nested_dict<\/code>\u3002\u901a\u8fc7\u4f7f\u7528type()<\/code>\u548cisinstance()<\/code>\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u67e5\u770b\u8fd9\u4e9b\u5d4c\u5957\u6570\u636e\u7ed3\u6784\u7684\u7c7b\u578b\u3002<\/p>\n<\/p>\n
\u4e5d\u3001\u67e5\u770b\u51fd\u6570\u548c\u65b9\u6cd5\u7684\u7c7b\u578b<\/h3>\n<\/p>\n
\u5728Python\u4e2d\uff0c\u51fd\u6570\u548c\u65b9\u6cd5\u4e5f\u662f\u5bf9\u8c61\uff0c\u5b83\u4eec\u4e5f\u6709\u81ea\u5df1\u7684\u7c7b\u578b\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u524d\u9762\u4ecb\u7ecd\u7684\u65b9\u6cd5\u6765\u67e5\u770b\u51fd\u6570\u548c\u65b9\u6cd5\u7684\u7c7b\u578b\u3002<\/p>\n<\/p>\n
# \u793a\u4f8b<\/p>\n
def my_function():<\/p>\n
    pass<\/p>\n
print(type(my_function))  # \u8f93\u51fa\uff1a<class 'function'><\/p>\n
print(isinstance(my_function, type(lambda: None)))  # \u8f93\u51fa\uff1aTrue<\/p>\n
class MyClass:<\/p>\n
    def my_method(self):<\/p>\n
        pass<\/p>\n
obj = MyClass()<\/p>\n
print(type(obj.my_method))  # \u8f93\u51fa\uff1a<class 'method'><\/p>\n
print(isinstance(obj.my_method, type(lambda: None)))  # \u8f93\u51fa\uff1aFalse<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u51fd\u6570my_function<\/code>\u548c\u4e00\u4e2a\u7c7bMyClass<\/code>\uff0c\u7c7b\u4e2d\u5305\u542b\u4e00\u4e2a\u65b9\u6cd5my_method<\/code>\u3002\u901a\u8fc7\u4f7f\u7528type()<\/code>\u548cisinstance()<\/code>\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u67e5\u770b\u51fd\u6570\u548c\u65b9\u6cd5\u7684\u7c7b\u578b\u3002<\/p>\n<\/p>\n
\u5341\u3001\u67e5\u770b\u6a21\u5757\u548c\u5305\u7684\u7c7b\u578b<\/h3>\n<\/p>\n
\u5728Python\u4e2d\uff0c\u6a21\u5757\u548c\u5305\u4e5f\u662f\u5bf9\u8c61\uff0c\u5b83\u4eec\u4e5f\u6709\u81ea\u5df1\u7684\u7c7b\u578b\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u524d\u9762\u4ecb\u7ecd\u7684\u65b9\u6cd5\u6765\u67e5\u770b\u6a21\u5757\u548c\u5305\u7684\u7c7b\u578b\u3002<\/p>\n<\/p>\n
# \u793a\u4f8b<\/p>\n
import os<\/p>\n
import sys<\/p>\n
print(type(os))  # \u8f93\u51fa\uff1a<class 'module'><\/p>\n
print(isinstance(os, type(sys)))  # \u8f93\u51fa\uff1aTrue<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5bfc\u5165\u4e86\u4e24\u4e2a\u6a21\u5757os<\/code>\u548csys<\/code>\u3002\u901a\u8fc7\u4f7f\u7528type()<\/code>\u548cisinstance()<\/code>\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u67e5\u770b\u6a21\u5757\u7684\u7c7b\u578b\u3002<\/p>\n<\/p>\n
\u7efc\u4e0a\u6240\u8ff0\uff0c\u5728Python\u4e2d\u67e5\u770b\u6570\u636e\u7c7b\u578b\u7684\u65b9\u6cd5\u6709\u5f88\u591a\uff0c\u5305\u62ec\u4f7f\u7528type()<\/code>\u51fd\u6570\u3001\u4f7f\u7528isinstance()<\/code>\u51fd\u6570\u3001\u4f7f\u7528__class__<\/code>\u5c5e\u6027\u7b49\u3002\u901a\u8fc7\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u67e5\u770b\u5404\u79cd\u53d8\u91cf\u3001\u590d\u6742\u6570\u636e\u7ed3\u6784\u3001\u81ea\u5b9a\u4e49\u7c7b\u3001\u51fd\u6570\u3001\u65b9\u6cd5\u3001\u6a21\u5757\u548c\u5305\u7684\u7c7b\u578b\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5728\u5b9e\u9645\u7f16\u7a0b\u4e2d\u975e\u5e38\u6709\u7528\uff0c\u80fd\u591f\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3\u548c\u5904\u7406\u6570\u636e\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u68c0\u67e5\u4e00\u4e2a\u53d8\u91cf\u7684\u6570\u636e\u7c7b\u578b\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684type()<\/code>\u51fd\u6570\u6765\u67e5\u770b\u53d8\u91cf\u7684\u6570\u636e\u7c7b\u578b\u3002\u53ea\u9700\u5c06\u53d8\u91cf\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u8be5\u51fd\u6570\uff0c\u8fd4\u56de\u503c\u5373\u4e3a\u8be5\u53d8\u91cf\u7684\u6570\u636e\u7c7b\u578b\u3002\u4f8b\u5982\uff0ctype(variable)<\/code> \u5c06\u8fd4\u56de\u53d8\u91cf\u7684\u7c7b\u578b\uff0c\u5982<class 'int'><\/code>\u6216<class 'str'><\/code>\u3002<\/p>\n
Python\u4e2d\u6709\u54ea\u4e9b\u5e38\u89c1\u7684\u6570\u636e\u7c7b\u578b\uff1f<\/strong>
Python\u652f\u6301\u591a\u79cd\u6570\u636e\u7c7b\u578b\uff0c\u5305\u62ec\u6574\u6570\uff08int<\/code>\uff09\u3001\u6d6e\u70b9\u6570\uff08float<\/code>\uff09\u3001\u5b57\u7b26\u4e32\uff08str<\/code>\uff09\u3001\u5217\u8868\uff08list<\/code>\uff09\u3001\u5143\u7ec4\uff08tuple<\/code>\uff09\u3001\u5b57\u5178\uff08dict<\/code>\uff09\u548c\u96c6\u5408\uff08set<\/code>\uff09\u3002\u4e86\u89e3\u8fd9\u4e9b\u6570\u636e\u7c7b\u578b\u53ef\u4ee5\u5e2e\u52a9\u60a8\u5728\u7f16\u7a0b\u65f6\u9009\u62e9\u5408\u9002\u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n
\u5982\u4f55\u68c0\u67e5\u4e00\u4e2a\u5bf9\u8c61\u662f\u5426\u662f\u7279\u5b9a\u7684\u6570\u636e\u7c7b\u578b\uff1f<\/strong>
\u53ef\u4ee5\u4f7f\u7528isinstance()<\/code>\u51fd\u6570\u6765\u68c0\u67e5\u4e00\u4e2a\u5bf9\u8c61\u662f\u5426\u5c5e\u4e8e\u67d0\u4e2a\u7279\u5b9a\u6570\u636e\u7c7b\u578b\u3002\u8be5\u51fd\u6570\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff1a\u8981\u68c0\u67e5\u7684\u5bf9\u8c61\u548c\u6570\u636e\u7c7b\u578b\u3002\u4f8b\u5982\uff0cisinstance(variable, int)<\/code> \u5c06\u8fd4\u56deTrue<\/code>\uff0c\u5982\u679c\u53d8\u91cf\u662f\u6574\u6570\u7c7b\u578b\uff0c\u5426\u5219\u8fd4\u56deFalse<\/code>\u3002\u8fd9\u79cd\u65b9\u6cd5\u5728\u7c7b\u578b\u68c0\u67e5\u548c\u6761\u4ef6\u5224\u65ad\u4e2d\u975e\u5e38\u6709\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e0a\u67e5\u770b\u6570\u636e\u7c7b\u578b\u7684\u65b9\u6cd5\u4e3b\u8981\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1a\u4f7f\u7528type()\u51fd\u6570\u3001\u4f7f\u7528isinstance()\u51fd\u6570\u3001\u4f7f\u7528 […]","protected":false},"author":3,"featured_media":1078206,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1078193"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1078193"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1078193\/revisions"}],"predecessor-version":[{"id":1078207,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1078193\/revisions\/1078207"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1078206"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1078193"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1078193"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1078193"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}