Funny how Python narrows the perspective of its practitioners. To brand as "pythonic" all those decades old concepts that had been well known and widespread long before Python is, well, among the most amusing symptoms of a fanboyism.
I think Python's, along with languages others mentioned here, popularity is what influenced and partly driven the rapid change of C++. Lisp was around for decades, yet only now, almost right after Python became popular, these old concepts were incorporated.
There's a comment by Fabio Fracassi ( http://preshing.com/20141202/cpp-has-become-more-pythonic/#I... ), member of the German delegation for the ISO C++ committee, contending that view. At roughly the same time that Python has been getting this features, many other languages have also been getting them, and usually without crediting Python influence (but rather other languages').
The problem is that Pythonicity is exclusive. If the features mentioned do correspond between the languages, that's a common property. Although, C++ couldn't be pythonic, if pythonicity describes the necessity to use these features.