python regex replace multiple patterns

Title: Python Regex: Replace Multiple Patterns - A Comprehensive Tutorial
Introduction:
Let's start by replacing a single pattern in a string. In this example, we'll replace all occurrences of digits with 'X'.
To replace multiple patterns, you can use the | (pipe) operator in your regex pattern to match any of the specified patterns. Let's replace both digits and dollar signs with 'X' in the same string.
For more complex replacements, you can use a dictionary to map patterns to their respective replacements. This allows you to apply different replacements for each pattern.
To make your replacements case-insensitive, you can use the re.IGNORECASE flag.
Conclusion:
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