规则3: 比较两个字符串或两个数字类型, 比较结果是符合预期的(字符串是字典顺序, 整型是数字大小的顺序) 原文: When you order two strings or two numeric types the ordering is done in the expected way (lexicographic ordering for string, numeric ordering
Enum string comparison To compare a string with an enum, extend from thestrclass when declaring your enumeration class, e.g.class Color(str, Enum):. You will then be able to compare a string to an enum member using the equality operator==. How to compare a string with an Enum in Pyt...
(由于 string interning ,字符串之间的标识比较起作用,最好不要依赖它。感谢@mwchase 和@Chris_Rands 让我意识到这一点。) 另一种可能性是在创建枚举时将成员值显式设置为其名称: class Signal(Enum): red = "red" green = "green" orange = "orange" (有关使此自动化的方法,请参 见此答案。) 然后...
In this example, Python raises a TypeError exception because a less than comparison (<) doesn’t make sense between an integer and a string. So, the operation isn’t allowed. It’s important to note that in the context of comparisons, integer and floating-point values are compatible, and ...
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...
2. Usingfind()to check if a string contains another substring We can also usestring find() functionto check if string contains a substring or not. This function returns the first index position where substring is found, else returns -1. ...
https://pymotw.com/3/enum/index.html Theenummodule defines an enumeration type with iteration and comparison capabilities. It can be used to create well-defined symbols for values, instead of using literal integers or strings. CREATE 类继承定义枚举。
loads(string) print(list_of_fruits) # Output: ['apple', 'banana', 'cherry'] Copy Comparison of Methods MethodUse CasePerformance split() Simple delimited strings Fast List Comprehension Character-by-character conversion Moderate json.loads() Parsing structured data Depends on size Handling ...
EnumComp, self.IntComp, self.StringComp) TRUE = 1 FALSE = 0 def main(loops=LOOPS): benchtime, stones = pystones(loops) print("Pystone(%s) time for %d passes = %g" % \ (__version__, loops, benchtime)) print("This machine benchmarks at %g pystones/second" % stones) def py...
2.1 enum:枚举类型 53 2.1.1 创建枚举 53 2.1.2 迭代 53 2.1.3 比较Enum 54 2.1.4 唯一枚举值 55 2.1.5 通过编程创建枚举 56 2.1.6 非整数成员值 58 2.2 collections:容器数据类型 60 2.2.1 ChainMap:搜索多个字典 60 2.2.2 Counter:统计可散列的对象 63 2.2.3 defaultdict:缺少的键返回一个默认值 ...