network scripting "tune inlog onand drop outover the years since this book was first publishedthe internet has virtually exploded onto the mainstream stage it has rapidly grown from simple communication device used primarily by academics and researchers into medium that is now nearly as pervasive as the television and telephone social observers have likened the internet' cultural impact to that of the printing pressand technical observers have suggested that all new software development of interest occurs only on the internet naturallytime will be the final arbiter for such claimsbut there is little doubt that the internet is major force in society and one of the main application contexts for modern software systems the internet also happens to be one of the primary application domains for the python programming language in the decade and half since the first edition of this book was writtenthe internet' growth has strongly influenced python' tool set and roles given python and computer with socket-based internet connection todaywe can write python scripts to read and send email around the worldfetch web pages from remote sitestransfer files by ftpprogram interactive websitesparse html and xml filesand much moresimply by using the internet modules that ship with python as standard tools in factcompanies all over the world dogoogleyoutubewalt disneyhewlettpackardjpland many others rely on python' standard tools to power their websites for examplethe google search engine--widely credited with making the web usable--makes extensive use of python code the youtube video server site is largely implemented in python and the bittorrent peer-to-peer file transfer system--written in python and downloaded by tens of millions of users--leverages python' networking skills to share files among clients and remove some server bottlenecks many also build and manage their sites with larger python-based toolkits for instancethe zope web application server was an early entrant to the domain and is itself written and customizable in python others build sites with the plone content management