blocks|key|1856525|text|(?!Andrea).{6}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1856526|假设您的regexp引擎支持负lookaheads...|unstyled|1856527|...or也许您更喜欢使用[A-Za-z]{6}来代替.{6}|offset|length|style|CODE|1856528|请注意，lookahead和lookbehinds通常不是“反转”正则表达式匹配的正确方法。正则表达式实际上并不是为执行负匹配而设置的；它们将负匹配留给您正在使用它们的任何语言。|1856529|entityMap^0|0|0|D|B|R|4|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|S|8|@$I|T|J|U|K|L]|$I|V|J|W|K|L]]|9|@]|A|$]]|$1|M|3|N|5|F|7|X|8|@]|9|@]|A|$]]|$1|O|3|-4|5|F|7|Y|8|@]|9|@]|A|$]]]|P|$]]

<pre><code>(?!Andrea).{6}
</code></pre>
Assuming your regexp engine supports negative lookaheads...
...or maybe you'd prefer to use <code>[A-Za-z]{6}</code> in place of <code>.{6}</code>
Note that lookaheads and lookbehinds are generally not the right way to &quot;inverse&quot; a regular expression match. Regexps aren't really set up for doing negative matching; they leave that to whatever language you are using them with.

blocks|key|1856911|text|对于Python/Java，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1856912|%5E(.(?!(some+text)))*$|code-block|syntax|javascript|1856913|http://www.lisnichenko.com/articles/javapython-inverse-regex.html|offset|length|1856914|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|1T|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|T|8|@]|9|@$I|U|J|V|1|W]]|A|$]]|$1|K|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|H]]]]

For Python/Java, 

<pre><code>^(.(?!(some text)))*$
</code></pre>

<a href="http://www.lisnichenko.com/articles/javapython-inverse-regex.html" rel="noreferrer">http://www.lisnichenko.com/articles/javapython-inverse-regex.html</a>

blocks|key|1857198|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1857199|%5E(?:(?!Andrea).)*$|code-block|syntax|javascript|1857200|这称为a+tempered+greedy+token。缺点是它的性能并不好。|offset|length|1857201|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/37343088/1188377^0|0|0|3|N|0|0^^$0|@$1|2|3|-4|4|5|6|R|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|S|7|@]|8|@]|9|$D|E]]|$1|F|3|G|4|5|6|T|7|@]|8|@$H|U|I|V|1|W]]|9|$]]|$1|J|3|-4|4|5|6|X|7|@]|8|@]|9|$]]]|K|$L|$4|M|N|O|9|$P|Q]]]]

In <a href="https://en.wikipedia.org/wiki/Perl_Compatible_Regular_Expressions" rel="nofollow noreferrer">PCRE</a> and similar variants, you can actually create a regex that matches any line not containing a value:
<pre><code>^(?:(?!Andrea).)*$
</code></pre>
This is called <a href="https://stackoverflow.com/a/37343088/1188377">a tempered greedy token</a>. The downside is that it doesn't perform well.

blocks|key|2070728|text|Negative+lookahead+assertion|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2070729|(?!Andrea)|code-block|syntax|javascript|2070730|但并不是所有的平台都支持它们。|2070731|entityMap|0|LINK|mutability|MUTABLE|url|http://www.regular-expressions.info/lookaround.html^0|0|S|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|X|8|@]|9|@]|C|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

<a href="http://www.regular-expressions.info/lookaround.html" rel="noreferrer">Negative lookahead assertion</a>

<pre><code>(?!Andrea)
</code></pre>

This is not exactly an inverted match, but it's the best you can directly do with regex. Not all platforms support them though.

blocks|key|1856883|text|如果您想在RegexBuddy中做到这一点，有两种方法可以获得不匹配正则表达式的所有行的列表。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1856884|在Test面板的工具栏上，将测试范围设置为"Line+by+line“。执行此操作时，同一工具栏上的“全部列出”按钮下将显示一个项目“列出所有不匹配的行”。(如果看不到“全部列出”按钮，请单击主工具栏中的“匹配”按钮。)|1856885|在GREP面板上，您可以选中“基于行”和“反转结果”复选框，以获得您正在浏览的文件中不匹配的行的列表。|1856886|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

If you want to do this in RegexBuddy, there are two ways to get a list of all lines not matching a regex.

On the toolbar on the Test panel, set the test scope to "Line by line". When you do that, an item List All Lines without Matches will appear under the List All button on the same toolbar. (If you don't see the List All button, click the Match button in the main toolbar.)

On the GREP panel, you can turn on the "line-based" and the "invert results" checkboxes to get a list of non-matching lines in the files you're grepping through.

blocks|key|1856928|text|(?!在实践中很有用。尽管严格地说，展望未来并不是数学上定义的正则表达式。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1856929|您可以手动编写反向正则表达式。|1856930|下面是自动计算结果的a+program。它的结果是机器生成的，这通常比手写复杂得多。但结果是有效的。|1856931|entityMap|0|LINK|mutability|MUTABLE|url|http://www.vidarholen.net/contents/junk/files/invert.hs^0|0|3|0|0|A|9|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|U|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|V|8|@]|D|@$9|W|A|X|1|Y]]|E|$]]|$1|J|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|Q]]]]

<code>(?!</code> is useful in practice. Although strictly speaking, looking ahead is not a regular expression as defined mathematically.
You can write an inverted regular expression manually.
Here is <a href="http://www.vidarholen.net/contents/junk/files/invert.hs" rel="nofollow noreferrer">a program</a> to calculate the result automatically.
Its result is machine generated, which is usually much more complex than hand writing one. But the result works.

blocks|key|2070751|text|在Perl中，您可以执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2070752|process($line)+if+($line+=~+!/Andrea/);|code-block|syntax|javascript|2070753|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

In Perl you can do:
<pre><code>process($line) if ($line =~ !/Andrea/);
</code></pre>

I'm processing a file, line-by-line, and I'd like to do an inverse match. For instance, I want to match lines where there is a string of six letters, but only if these six letters are not 'Andrea'. How should I do that?
I'm using <a href="https://en.wikipedia.org/wiki/RegexBuddy" rel="noreferrer">RegexBuddy</a>, but still having trouble.

How can I "inverse match" with regex?

Python

Java

Perl

我正在逐行处理一个文件，并且我想做一个反向匹配。例如，我希望匹配其中有六个字母的字符串的行，但前提是这六个字母不是'Andrea‘。我该怎么做呢？我正在使用，但仍然有问题。

问如何使用正则表达式进行“反向匹配”？
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