Python 2.X vs 3.X

Hey guys, I am learning python and have literally 0 industry experience, also the book I am using is from 2013. Is 3.X used widely now or only for sandboxing?

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Python 2 loses official support in 2020; Python 3 is the one to learn.

Thanks user, am I making a bad choice in language? I am going with O'Reilly and actually want to learn the language instead of using stack overflow. My goal is to use this to help me in machine learning/automation.
Not sure what languages are based.

Python is shit.

Python when possible, C if you must. Live by these words.

Python is the de facto machine learning language.

agreed, but everyone shits.

>python book
>a mouse

What does it imply?

>am I making a bad choice in language?
There are very very small differences between 2 and 3. You will work them out with ease.

Build the right trap and it'll churn butter for you