Google data centers in late 2013 and began selling off the barges in 2014. Most of the software stack that Google uses on their servers was developed in-house. According to a well-known Google employee, C++, Java, Python and (more recently) Go are favored over other programming languages. For example, the back end of Gmail is written in Java and the back end of Google Search is written in C++. Google has acknowledged that Python has played an important role from the beginning, and that it continues to do so as the system grows and evolves. The software that runs the Google infrastructure includes:
Python syntax and semantics among Python users has been removing tabs as block markers; other Python users propound removing spaces instead). Moreover, formatting routines which remove whitespace—for instance, many Internet forums—can destroy the syntax of a Python program, whereas a program in a bracketed language would merely become more difficult to read. Many popular code editors handle Python's indentation conventions seamlessly, sometimes after a configuration option is enabled. Since Python is a dynamically typed language, Python "values," not variables, carry type. This has implications for many aspects of the way the language functions. All variables in Python hold references to objects, and these references