What is unique about Python?

[James]

>> The indentation-based syntax seems to be unique

I think Haskell was there first. As well as ABC, one of Python's
precursors.

Python is a pragmatic language, just like C (I wish I could say that
about Java). It does not necessarily innovate but incorporates things
known to work elsewhere. C and Java have not done anything particularly
unique either. They are included in curricula by their popularity.
Isn't that a good enough argument?