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Van Lindberg is a software engineer and practicing attorney. What he does most, though, is translate ? from ?lawyer? to ?engineer? and back. He likes working with both computer code and legal code to get things done. Van?s current work touches both traditional intellectual property and the emerging field of open source…

Shashank Tiwari is a Managing Partner & CTO at Treasury of Ideas, a technology driven innovation and value optimization company.

Rick Copeland is a senior software engineer with retail analytics firm Predictix, LLC, where he uses SQLAlchemy extensively, primarily for web application development. He has been using Python full-time for development since 2005, in projects as diverse as demand forecasting, business web applications, compilers, and hardware synthesis.

Noah Gift is the co-author of Python For Unix and Linux by O'Reilly. He is an author, speaker, consultant, and community leader, writing for publications such as IBM Developerworks, Red Hat Magazine, O'Reilly, and MacTech, and Manning.

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Python Answers

• How to Strip Invalid Characters from Filenames
• Reacting to Wave Conversations and Inserting Wave Gadgets with a Wave Robot
• Why use built-in types in Python?
• How to Match IPv4 Addresses with Regular Expressions
• How to validate URLs with regular expressions
• How to manipulate numbers with thousand separators using regular expressions

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PyMOTW: sys, Part 6: Low-level Thread Support

sys includes low-level functions for controlling and debugging thread behavior.

PyMOTW: sys, Part 5: Tracing Your Program As It Runs

There are two ways to inject code to watch your Python program run: tracing and profiling. They are similar, but intended for different purposes and so have different constraints. The easiest, but least efficient, way to monitor your program is through a trace hook, which can be used for writing a debugger, code coverage monitoring, or many other purposes.

Announcing O'Reilly Answers - Clever Hacks. Creative Ideas. Innovative Solutions.

We're launching the beta of O'Reilly Answers, and I'm inviting you to be part of it. In brief, O'Reilly Answers is a community site for sharing knowledge, asking questions, and providing answers that brings together our customers, authors, editors, conference speakers, and Foo (Friends of O'Reilly). O'Reilly is at the center of an amazing exchange of knowledge sharing and idea generation, and we want you to join us in changing the world by spreading the knowledge of innovators.

PyMOTW: sys, Part 4: Exception Handling

sys includes features for trapping and working with exceptions.

PyMOTW: sys, Part 3: Memory Management and Limits

Python's sys module includes several functions for understanding and controlling memory usage.

PyMOTW: sys, Part 2: Runtime Environment

sys provides low-level APIs for interacting with the system outside of your application, by accepting command line arguments, accessing user input, and passing messages and status values to the user.

PyMOTW: sys, Part 1: Interpreter Settings

sys contains attributes and functions for accessing compile-time or runtime configuration settings for the interpreter.

Four short links: 6 October 2009

Bird-watching Turns To Technology (BBC) -- CCTV-esque automated bird watching. Sensor networks + computer vision for an ecological purpose. In a bid to track the guillemots behaviour, Dr Dickinson is refining established work that involves modelling the visual structure of an area around a nest. The computer system will be able to use this model to identify changing elements...

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