如果data的值不匹配任何case子句中的模式,则会执行带有通配符_的case子句(如果存在的话)。 类型匹配 match语句不仅可以匹配具体的值,还可以匹配值的类型。 data = 42 match data: case int(): print("An integer!") case float(): print("A float!") case str(): print("A string!") case _: print(...
下面是一个使用mermaid语法绘制的状态图,展示了match语法的执行流程: StartCheckValue|0|Zero|int|Integer|str|String|_|Other 结论 match语法是Python 3.10中引入的一种新的模式匹配语法,可以帮助我们写出更加清晰和易读的代码。通过case子句进行模式匹配,可以处理多种情况下的逻辑,提高代码的可读性和可维护性。希望本...
4、match:匹配 5、span:跨度 6、ignore case:忽略 大小写 7、multi line:多行 8、dot all:点 全部 9、unicode:万国码 10、verbose:累赘 11、pos/position:位置 十九 部分出现的单词 1.python 蟒蛇 2. downlaods 下载 3. install 安装 4. customize 自定义 5. path 环境变量:路径 6. optional 可选的...
self.fall = False # 如果匹配到的case语句中没有break,则fall为true。 defiter(self): yield self.match # 调用match方法 返回一个生成器 raise StopIteration # StopIteration 异常来判断for循环是否结束 def match(self, *args): # 模拟case子句的方法 if self.fall or not args: # 如果fall为true,则继续...
match n: case n if n < 0: print(f"{n}: negative value") case n if n == 0: print(f"{n}: zero") case n if n > 0: print(f"{n}: positive value") The example chooses a random integer. Withmatch/casewe determine, if the value is negative, zero, or positive. ...
Sequence Operations I s2 in s Return true if s contains s2 s + s2 Concat s and s2 min(s) Smallest character of s max(s) Largest character of s s2 not in s Return true if s does not contain s2 s * integer Return integer copies of s concatenated # 'hello' => 'hellohellohello'...
Python3.10 之后,可以使用 match case 语句替代 if 语句,使代码逻辑更清晰。 代码语言:javascript 复制 def desc(x: Any)->None: match x: case int(_): print(f'{x} is an integer') case float(_): print(f'{x} is a float') case _: print(f'{x} is not an integer or float') 无论是...
1、自动化office，包括对excel、word、ppt、email、pdf等常用办公场景的操作，python都有对应的工具库，...
It shows an instance of _longobject (for which PyLongObject is a typedef) for a Python long integer, and it tries to infer types for native classes that you author yourself. The children of this node are editable. If a child field of an object is of type PyObject, or another ...
linux-gnu.so.p/numpy/random/_mt19937.pyx.c:2470:45: error: initialization of ‘int’ from ‘vectorcallfunc’ {aka ‘struct _object * (*)(struct _object *, struct _object * const*, long unsigned int, struct _object *)’} makes integer from pointer without a cast [-Wint-conversion...