a = 1 b = 5 c = 10 max_number = a if (a > b and a > c) else b if b > c else c max_number output: 10 三、模式匹配(3.10新用法) Python在3.10中更新了模式匹配功能,也就是大家所熟悉的其他语言的 switch-case,而Python使用关键字 match-case来实现。 格式如下: match 匹配值: case...
如果匹配成功,程序往后执行。 b) 定义一个match( )方法,该方法用于用于匹配case子句。这里需要考虑三种情况:首先是匹配成功的情况,其次是匹配失败的默认case子句,最后是case子句中没有使用break中断的情况。 c) 重写iter( )方法,定义该方法后才能使switch类用于循环语句中。iter( )调用match( )方法进行匹配。通过yi...
Everything_SetMatchCase Everything_SetMatchWholeWord Everything_SetRegex Everything_SetMax Everything_SetOffset Everything_SetReplyWindow Everything_SetReplyID Everything_SetSort Everything_SetRequestFlags 读取搜索状态 Everything_GetSearch Everything_GetMatchPath Everything_GetMatchCase Everything_GetMatch...
AI代码解释 if<condition1>:<case1 statements>elif<condition2>:<case2 statements>elif<condition3>:<case3 statements>...else:<defaultstatements> 该语句是顺序评估每个条件,如果当前条件分支为True,则执行对应分支下的语句块,如果没有任何条件成立,则执行else中的语句块,其中else是可以省略的。代码如下: 代码...
以百分制成绩转换为字母等级成绩为例,简单介绍一下Python选择结构需要注意的事项。 1、缩进必须要正确 在Python代码中,缩进是非常重要的。如果缩进不正确,会导致语法错误无法运行,也可能会导致逻辑错误得到错误结果。在嵌套的结构中,很容易出现这种情况。当然,也有极个别情况,虽然缩进并不合理,但是也能得到正确的结果,...
'inf' and 'nan' are special strings (case-insensitive), which, when explicitly typecast-ed to float type, are used to represent mathematical "infinity" and "not a number" respectively. Since according to IEEE standards NaN != NaN, obeying this rule breaks the reflexivity assumption of a ...
user_input_number=int(raw_input("请输入一个整数,范围0-99:".decode('utf-8').encode('gbk'))) except Exception,e: print u"非法输入数据,必须输入整数" continue if user_input_number<guess_number: print u"猜小了" elif user_input_number>guess_number: ...
If the string does not hold any number, it is convenient to set the default value that would be returned in this case. PythonCopy Code def ExtractNumber(Strng, DefaultValue): reg = r"(\+?\-?\ *\d+\.?\d*(?:[Ee]\ *-?\ *\d+)?)" #Specify the regular expression MatchArr=re....
If even a single character doesn’t match it leads to test failures. When to Choose Doctest is a suitable option if you want to showcase code examples in your documentation to illustrate its usage. It can be chosen to ensure that the documentation stays accurate according to the code. It ...
So, we check our hash, and if they match, we win. Next we need to build up our information so that we can access it easily later. For this script, we are only going to print what we found, but you may be able to adapt this to do something else in the future. We are going ...