I heard some anecdotal reports that a large search-engine-company-in-mountain-view does not use…
bikramjit ganguly

Hi Bikramjit!
From Python.org: Python 2.x is legacy, Python 3.x is the present and future of the language
For any give project, there may be a reason to use legacy software. But in our new projects, we will default to Python 3.

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