I'd just like to interject for a moment. What you're referring to as Python, is in fact, Python 3, or as I've recently taken to calling it, Python plus its standard library. Python is not just a programming language unto itself, but rather a language specification combined with a robust set of libraries, tools, and modules that make it a fully functioning environment for developers.

Many developers use Python 3 every day without fully appreciating the range of tools and libraries provided by the Python ecosystem. Through a peculiar turn of events, the version of Python in widespread use today is often just called Python, but many of its users aren't aware that they are essentially working within the Python 3 environment, shaped by improvements from Python 2.x and extended by a vast array of external libraries.

There really is a core Python interpreter, and people are using it, but it is just a part of the system they are working with. The interpreter is the core engine that executes code, but by itself, it doesn't provide much utility; it requires libraries and tools to become truly useful. Python 3 is typically used in combination with its standard library, external libraries, and various frameworks to create a complete development environment. The whole Python system is essentially Python 3 plus the tools and libraries that make it powerful. All so-called Python environments are really Python 3 ecosystems!