The bool() function returns the boolean value of a specified object.The object will always return True, unless:The object is empty, like [], (), {}The object is FalseThe object is 0The object is NoneSyntaxbool(object) Parameter Values...
ReturnTrueif theobjectargument is an instance of theclassinfoargument, or of a (direct, indirect or virtual) subclass thereof. Ifobjectis not an object of the given type, the function always returnsFalse. 如果object变量是classinfo类的实例(或者通俗点讲,object变量的类型是classinfo),则返回True。
bool() function The bool() function is used to convert a value to a Boolean. Syntax: class bool([x]) Version: (Python 3.2.5) If x is false or omitted, this returns False; otherwise it returns True. bool is also a class, which is a subclass of int. Class bool cannot be subclasse...
bool({}) Try it Yourself » One more value, or object in this case, evaluates toFalse, and that is if you have an object that is made from a class with a__len__function that returns0orFalse: Example classmyclass(): def__len__(self): ...
bool:根据传入的参数的逻辑值创建一个新的布尔值 >>> bool()#未传入参数False>>> bool(0)#数值0、空序列等值为FalseFalse>>> bool(1) True int:根据传入的参数创建一个新的整数 >>> int()#不传入参数时,得到结果0。0>>> int(3)3 >>> int(3.6)3 ...
| | __bool__(self, /) | self != 0 | | __divmod__(self, value, /) | Return divmod(self, value). | | __eq__(self, value, /) | Return self==value. | | __float__(self, /) | float(self) | | __floordiv__(self, value, /) | Return self//value. | | __...
内置函数(类) bool,Python 官方文档描述如下: help(bool) Help on class bool in module builtins: class bool(int) | bool(x) -> bool | | Returns True when the argument x is true, False otherwise. | The builtins True and False are the only two instances of the class bool. | The class...
或者,處理常式可以傳回值,該值必須是 JSON 可序列化的。常見的傳回類型包括 dict、list、str、float、 int和bool。傳回值的情況取決於調用該函數的調用類型和服務。例如:如果您使用RequestResponse叫用類型同步叫用 Lambda 函數,Lambda 會將 Python 函數呼叫的結果傳回給叫用 Lambda 函數的用戶端 (在叫用請求的...
(self) -> bool -- returns true if this instance has a different package than its outer's package"},{"get_package",PyCFunctionCast(&FMethods::GetPackage),METH_NOARGS,"get_package(self) -> Package -- get the package directly associated with this instance"},{"get_name",PyCFunctionCast(&...
| If x is outside the integer range, the function returns a long instead. | | If x is not a number or if base is given, then x must be a string or | Unicode object representing an integer literal in the given base. The