\n ASCII Linefeed (LF) character \N{<name>} Character from Unicode database with given <name> \r ASCII Carriage return (CR) character \t ASCII Horizontal tab (TAB) character \uxxxx Unicode character with 16-bit
return x * y; } else { return - x * y; } } 1. 2. 3. 4. 5. 6. 7. 8. 总结: 箭头函数有两种形式: (1)函数体为简单的表达式,可省略{}和return(2)函数体有多条语句,不能省 (3)箭头函数相当于匿名函数 当使用箭头函数的时候,箭头函数会默认帮我们绑定外层 this 的值,所以在箭头函数中 t...
String indices can also be specified with negative numbers, in which case indexing occurs from the end of the string backward: -1 refers to the last character, -2 the second-to-last character, and so on. Here is the same diagram showing both the positive and negative indices into the str...
Unicode码(Universal Character Set,通用字符集) 是一种更加全面的字符编码方案,包含了几乎所有已知的文字符号、标点符号、符号、文字、音标、图形符号等。Unicode码使用16位(后来扩展为32位)二进制数字来表示字符,所以可以表示更多的字符。Unicode码的目标是覆盖全球所有的字符,并为各种语言和文化提供一致的字符编码方案...
# (.*?) means the shortest possible series of any character [' sixth s', " sheikh's s", " sheep's s"] #doesn’t return overlapping matches. 13、verbose regular expressions Python allows you to do this with something called verbose regular expressions. A verbose regular expression is dif...
转义字符是元字符(Meta Character)的一种特殊情况。Python 中转义字符是反斜杠(\)。Python 中所有转义序列如下表: 转义序列意义 \ (行尾) 续行符 \a alert \b backspace \n new line \r carriage return \t table \v vertical table \' single qoute \" double qoute \\ back slash \xyy hex \0zz...
The escape character allows you to use double quotes when you normally would not be allowed: txt ="We are the so-called \"Vikings\" from the north." Try it Yourself » Other escape characters used in Python: CodeResultTry it \'Single QuoteTry it » ...
To fix this problem, use the escape character\": Example The escape character allows you to use double quotes when you normally would not be allowed: txt ="We are the so-called \"Vikings\" from the north." Try it Yourself »
Next we create our password guess by looking at the first character of the first field of the GECOS information and combining it with the last field of the GECOS information. We can grab the last element in an array by using negative indexes. The negative indexes count backward from the end...
(换行), and blank lines. Notice the \r and \n in the opening line of the file, which is how Python displays the special carriage return(回车)and line-feed(换行)characters (the file must have been created on a Windows machine,注1给出了解释). For our language processing, we want to ...