Replacing All Regex Matches in a Python String

Learn how to replace all occurrences of a regex pattern in a Python string. This comprehensive guide covers various techniques and examples for effective string manipulation using regular expressions in Python.
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Regular expressions (regex) provide a powerful way to search and manipulate strings in Python. When it comes to replacing all matches of a regex pattern in a given string, there are several approaches to consider. In this guide, we'll explore different methods and provide examples for a better understanding.

The re module in Python provides the sub() function, which allows us to substitute occurrences of a pattern with a replacement string. Here's a basic example:

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In this case, the lambda function doubles the numeric values of currency occurrences in the string.

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This method iterates through all matches and performs replacements in a customized manner.

By understanding these methods, you can efficiently replace all regex matches in a Python string based on your specific requirements. Regular expressions offer a flexible and powerful toolset for string manipulation, and mastering them can greatly enhance your text-processing capabilities in Python.