Python (programming language) was initially set at 2015 then postponed to 2020 out of concern that a large body of existing code could not easily be forward-ported to Python 3. In January 2017, Google announced work on a Python 2.7 to Go transcompiler to improve performance under concurrent workloads. Python is a multi-paradigm programming language. Object-oriented programming and structured programming are fully supported, and many of its features support functional programming and aspect-oriented programming (including by metaprogramming and metaobjects (magic methods)). Many other paradigms are supported via extensions, including design by contract and logic programming. Python uses dynamic typing, and a combination of
Google with Yahoo!, which would have allowed Yahoo! to feature Google advertisements on its web pages. The alliance between the two companies was never completely realized because of antitrust concerns by the U.S. Department of Justice. As a result, Google pulled out of the deal in November 2008. In July 2016, Google started rejecting all flash-based adverts replacing them by HTML5. Google's plan was to go “100% HTML5” beginning on January 2, 2017. According to comScore market research from November 2009, Google Search is the dominant search engine in the United States market, with a market share of 65.6%. Google indexes