Retrieving Specific Content from a Regular Expression Match
When extracting information from HTML using regular expressions, you may encounter instances where you need to retrieve specific content within a match. This can be achieved using capture groups and indexed referencing.
Capturing Content with Parentheses
To capture a portion of a regular expression match, enclose it within parentheses ( ). This creates a capture group. For example, to capture just the contents of the
title_search = re.search('<title>(.*)</title>', html, re.IGNORECASE)
Retrieving Captured Content
After performing the search, you can retrieve the captured content using the group() method with an index corresponding to the capture group number (starting from 1). In this case, the title is captured by group 1:
if title_search: title = title_search.group(1)
Eliminating the Need for String Manipulation
This approach eliminates the need for additional steps to remove the
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