Then you use Python’s built-innext()to get the next value fromenum_instance. The first value thatenum_instancereturns is a tuple with the count0and the first element fromvalues, which is"a". Callingnext()again
from enum import Enum class Status(Enum): NO_STATUS = -1 NOT_STARTED = 0 IN_PROGRESS = 1 COMPLETED = 2 print(Status.IN_PROGRESS.name) # IN_PROGRESS print(Status.COMPLETED.value) # 2 ▍9、重复字符串 name = "Banana" print(name * 4) # BananaBananaBananaBanana ▍10、比较3个数字的大...
An enumeration is a set of symbolic names bound to unique, constant values. Enumerations can be used to create simple custom data types which include things such as seasons, weeks, types of weapons in a game, planets, grades, or days. By convention, enumeration names begin with an uppercas...
@enum.unique 专用于枚举的 class 装饰器。 它会搜索一个枚举的 __members__ 并收集所找到的任何别名;只要找到任何别名就会引发 ValueError 并附带相关细节信息: >>> >>> from enum import Enum, unique >>> @unique ... class Mistake(Enum): ... ONE = 1 ... TWO = 2 ... THREE = 3 ...
3. Display Enum member names ordered by their values Write a Python program to display all the member names of an enum class ordered by their values. Expected Output: Country Name ordered by Country Code: Afghanistan Algeria Angola Albania ...
1. 枚举 - enumerate 可以有参数哦 之前我们这样操作: i = 0for item in iterable: print i, item i += 1 现在我们这样操作: for i, item in enumerate(iterable): print i, item enumera
defget_all_vector(file_path,stop_words_set): names= [ os.path.join(file_path,f)forfinos.listdir(file_path) ] posts= [ open(name).read()fornameinnames ] docs=[] word_set=set()forpostinposts: doc=del_stop_words(post,stop_words_set) ...
Get __init__ signatures matching any taste, peculiar or plain! The PEP 681 compatible alias option can be use to override private attribute name mangling, or add other arbitrary field argument name overrides. #950 attrs.NOTHING is now an enum value, making it possible to use with e.g. ty...
func = stacks[0].function code = stacks[1].code_context[0] s = code.index(func) s = code.index("(", s + len(func)) + 1 e = code.index(")", s) return code[s:e].strip() except: return"" 对于常量,可以使用enum,它支持检索其名称。
class Days(Enum): MONDAY = 1 TUESDAY = 2 WEDNESDAY = 3 THURSDAY = 4 FRIDAY = 5 SATURDAY = 6 SUNDAY = 7 def str_num_map(day: str) -> int: return Days[day].value str_num_map('WEDNESDAY') 使用Enum会使代码更简短,增加可读性(所见即所得),同时能做到类型安全。当对其进行扩展时,采用if...