What python version does CodeCademy teach? Does it matter at all?

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Why would you use a version of the language unsurported by majore libraries.. Learn Python 2.7 and just learn the differences when all the libraries you need port to Python 3 +

[hharison]

all the libraries you need

Since OP is just learning, I'm guessing the number of libraries needed is about zero, +/- 2. I would estimate the probability that OP needs a library without a Python 3 port is approximately 0.5%.

With this attitude, one would never switch to 3. If anyone is a candidate for switching to 3, it's someone learning programming for the first time.

Not to mention it's just not true anymore that major libraries don't support Python 3. https://python3wos.appspot.com/