I recently had the opportunity to partner with Sundeep Agarwal, the author of Python re(gex)? to create a bundle with my second book, Python 201: Intermediate Python.
The Python Regex book covers Regular Expressions in Python. While only 50 pages in length, it has lots of examples that you can use to learn all about using Regular Expressions in your own code. You can check out the Github repo and see what kind of code is in the book.
You can find the bundle on Leanpub.
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