fromdataclassesimportdataclass@dataclassclassMyFraction:numerator:int=0denominator:int=1 此外dataclass 还有很多便利功能,如默认提供了更好可读性的 string representation,可以直接做相等,大小比较等。甚至跟 class 一样,dataclass 中也可以定义各种方法,
Season = Enum('Season', 'SPRING SUMMER AUTUMN WINTER', start=1) Here the values are specified in a string, separated by space. Thestartprovides the initial value. $ python main.py Season.SUMMER Summer Enum iteration We can iterate over Python enums. main.py #!/usr/bin/python from enum...
StringPool 类用于保存所有字符串常量，以便将它们排列在连续的内存区域中，并将地址分配给代码生成器使用。当你在 c500 中写 char *s = "abc" 时，真正发生的是：StringPool 附加一个空终止符StringPool 检查是否已经存储了“abc”，如果是，则将地址返回否则，StringPool 将其与基地址 + 到目前为止存储的总字...
Return a nice string representation of the object. If the argument is a string, the return value is the same object. """ def capitalize(self): """ 首字母变大写 """ """ S.capitalize() -> string Return a copy of the string S with only its first character capitalized. """ return ...
wchar_t *wstr; /* wchar_t representation (null-terminated) */ } PyASCIIObject; 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 仅ASCII的字符串初始化会把state中的ascii和compact都进行设置,其中的ascii用于表明字符串是否是纯ASCII,compact用于表明是否是紧凑型字符串,如果是紧凑...
The caller has to make sure that the string has it's canonical representation set before calling this macro. Call PyUnicode_(FAST_)Ready to ensure that. */ #define PyUnicode_GET_LENGTH(op) \ (assert(PyUnicode_Check(op)), \ assert(PyUnicode_IS_READY(op)), \ ((PyASCIIObject *)(op...
enumeration strings - enum PV types have integer or string representation, and you get access to both put with wait - The PV.put() method can optionally wait until the record is done processing (with timeout) Features that you won't have to worry about: ...
Thevalueargument is the name of the enumeration, which is used to build the representation of members. Thenamesargument lists the members of the enumeration. When a single string is passed, it is split on whitespace and commas, and the resulting tokens are used as names for the members, whi...
# Find the service that manages the virtual machine: vms_service = system_service.vms_service() vm_service = vms_service.vm_service('123') # Retrieve the representation of the virtual machine: vm = vm_service.get() The response is an instance of the corresponding type, in this ca...
(9617) # Character 9617 is '░' NORTH = 'NORTH' SOUTH = 'SOUTH' EAST = 'EAST' WEST = 'WEST' def wallStrToWallDict(wallStr): """Takes a string representation of a wall drawing (like those in ALL_OPEN or CLOSED) and returns a representation in a dictionary with (x, y) tuple...