Python is great because it includes an interactive mode for learning the language and quickly testing out code ideas. IPython ...

IPython Console - this is a powerful interactive Python shell. For example, it makes system commands available directly and it allows you to see plots inline. There are many good features of IPython.

For some time now, Python developers have been able to “annotate” names with type information. With Python 3.5, type hints officially became part of the language (see PEP 484).

Many Python fans have longed for the language to adopt functional programming features. Now they can get those features without having to switch to a new Python implementation.