I am new to atom and python in general. I was able to print hello world in atom using python, but I cannot do the program of calculating the circle's area.
Here is what I get. I can do this in IDLE, but I do not know why I cannot input a radius here. Can anyone tell me how to solve it? Thank you!
(I have already saved the file)

input()function in python. I forgot exactly why, but just run the file from the command line instead. Atom is really more of a "web IDE"(if it can be called an IDE at all).