If you work with strings in your Python scripts and you're writing obscure logic to process them, then you need to look into regex in Python. It lets you describe patterns instead of writing ...
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The PCRE4J project's goal is to bring the power of the PCRE library to Java. PCRE4J provides 100% coverage of the PCRE2 API, giving you access to every feature of the PCRE2 library from Java.