Python 中使用了哪种正则表达式风格? [英] Which Regular Expression flavour is used in Python?

问题描述

我想将哪个 RegEx-Flavour 用于 Python?它是 PCRE、Perl 兼容还是 ICU 或其他什么?

I want to which RegEx-Flavour is used for Python? Is it PCRE, Perl compatible or is it ICU or something else?

推荐答案

它与 Perl 的足够兼容，这意味着大多数 Perl 表达式无需修改即可工作.它旨在与 Perl 兼容，但当然也存在一些细微差别.

It's compatible enough w/ Perl, meaning most Perl expressions will work unmodified. It aims to be Perl compatible but, of course, there are some minor differences.

从技术上讲，它使用自己的正则表达式风格.例如，在其他实现采用该语法之前很久，Python 正则表达式中就提供了命名组.它还支持开箱即用的 Unicode.如今，大多数 Python 扩展都在其他地方得到支持.见 http://docs.python.org/library/re.html

It, technically, uses its own flavor of regular expressions. For instance, named groups were offered in Python regex long-before other implementations adopted the syntax. It also supports Unicode out of the box. Most Python extensions are supported elsewhere these days. See http://docs.python.org/library/re.html

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