W. David Ashley

Work with Db2 to write SQL and access databases using optimized code for the fastest response. This book will give you complete documentation on DB2 via Python for the IBM_db module and provide a number of examples for the usage of each module API. Begin by getting your free version of Db2 for Linux and Windows. While the book concentrates more on the Linux version of Db2, it also covers enough of the Windows version so that you're comfortable with obtaining and installing Db2 on your version of Windows. Next, you'll see how to install the sample database that comes with Db2, and take some data from the web to design a database around it, including tables and indexes. For Db2 to be really useful you need to use strong SQL expressions. This book provides specific examples of how to avoid using poor ones that can cause extra processing time for the query. Lastly, you'll look at each API in the ibm_db and ibm_db_dbi module. This module is not sponsored by IBM and must be installed separately from the Db2 database. After reading Foundation Db2 and Python you'll be able to install Db2 on Windows or Linux, and perform backups and restore data. What You'll LearnObtain and install Db2 properly on Linux and WindowsCreate databases and load them on Db2Work with ibm_db and ibm_db_dbi API modules for PythonWrite SQL for Db2Review the future of the ibm_db Python module Who This Book Is ForPython programmers and DB2 administrators interested in building application with Python and DB2

Discover the essential concepts of libvirt development and see how to interface to Linux virtualization environments, such as QEMU/KVM, XEN, Virtuozzo, VMWare ESX, LXC, Bhyve, and more. This book will prepare you to set up and maintain a virtual machine environment. You'll start by reviewing virtualization in general and then move on to libvirt-specific concepts using Python, including virtualized operating systems and networks, connections, storage pools, and event and error handling. This work concludes with a comprehensive look at the XML schema definitions for domains, networks, devices, network filtering, storage, node devices, and more. The libvirt API covers the entire life cycle of virtual objects, from creation to destruction. It contains everything needed for the management of a virtual object during that life cycle. While libvirt has APIs that support many languages, Foundations of Libvirt Development concentrates on Python exclusively, and how to use the APIs to control virtual machines under the QEMU/KVM system. and more. What You'll LearnInterface Python to the libvirt library. Review the class layout and methods of the libvirt library. Install and manipulate virtual machines via Python/libvirt. Create XML to manipulate domains, networks, and devices. Write Python programs to perform libvirt functions without human intervention. Who This Book Is For? Maintainers of virtual machines in a UNIX/Linux environment ranging from managing code on a single virtual machine through an entire installation of virtual machines.

Learn how to develop portable GUI programs to run on multiple operating systems. Revised and updated from the popular original, with a full set of new examples in Python and using PyGTK, this book provides all the information you'll need to write easy or complex GUI applications, offering one source of knowledge and best practices for user interface creation. Foundations of PyGTK Development presents numerous real-life examples that you can immediately put to use in your own applications. It begins with an overview of key topics such as widget choice, placement, and behavior, before moving on to more advanced issues. Building on your familiarity with Python, the book delves into new topics such as object inheritance early on to allow for a complete understanding of code examples later. What You'll LearnWork with layout containers including boxes, tables, grid, and panesUse the Application and ApplicationWindow classes as the base for your PyGTK applicationManage dialogs to give general information, error messages, or warnings to the userIncorporate styles, images, and the clipboard within your applicationsWho This Book is ForExperienced Python programmers or DevOps administrators tasked with developing or maintaining user interfaces.