[eeZi]

Google Trends chart:

https://www.google.com/trends/explore?date=all&q=python%203

[freebs]

Google Trends chart Python 2 VS Python 3:

https://www.google.com/trends/explore?date=all&q=python%203,...

[1wd]

2.6, 2.7, 3.0, 3.1, 3.2: https://www.google.com/trends/explore?date=all&q=python%202....

2.7, 3.3, 3.4, 3.5, 3.6: https://www.google.com/trends/explore?date=all&q=python%202....

[nooorofe]

https://www.google.com/trends/explore?date=all&q=python%202....

:)))