python regex capture group example
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Regular expressions, or regex, are a powerful tool for pattern matching and text manipulation in Python. Capture groups in regex allow you to extract specific parts of a matched pattern. In this tutorial, we'll explore how to use capture groups in Python's re module with practical examples.
A capture group is a way to treat part of a pattern as a sub-pattern that can be referenced separately. By enclosing a portion of your regex pattern in parentheses (), you create a capture group.
For example, consider the following regex pattern:
In this pattern:
Now, let's see how to use re.match() to apply the pattern and extract information:
Output:
Here, re.match() attempts to match the pattern at the beginning of the string. If successful, we use match.group() to access the captured groups.
If you want to find the pattern anywhere in the string, you can use re.search():
Output:
Capture groups in Python's regex allow you to extract specific information from matched patterns. By using re.match() or re.search(), along with match.group(), you can easily work with capture groups and manipulate text data in a more granular way. Experiment with different patterns and capture group combinations to suit your specific needs.
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