The commenter above you said:
> general real world implementation
By this they mean the real-world-implementation that is in general use, which in this case is interpreted.
Yes, Python can be compiled and C++ can be interpreted. 99% of the time, they're not though.
When somebody says X language is interpreted, they mean that the most common and widely implementation is an interpreter. That's a useful bit of information to know about a language. "Correcting" them and saying that all languages can be interpreted OR compiled, doesn't really add anything of value to the discussion, other than to label yourself as a pedant.