Data Crunching Solve Everyday Problems Using Java, Python, and more.

http://www.oreilly.com/catalog/0974514071/index.html

Programmers always need to move data around, to translate it from one format to another, or extract useful information from it. This book shows the best approaches to "crunching" data in several programming languages; all widely-used data formats are covered, including plain text, XML, relational, and binary data.