I am a student studying Python in Korea. I found strange thing while studying through idle

[노연수]

If you type print (" hello\ rpython ") into the python 3.7.0.b2, only the python is printed and i learned it's a crystal. However, if you type print (" hello\ rpython ") in the python 3.7.0.b2 idle, it is output as hellopython. I wonder why it prints like this. I would appreciate your answer. 
 
I have attached the file so I would appreciate your reference.