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

[Terry Reedy]

On 3/8/2018 7:07 PM, 노연수 wrote:
> 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.

'\r' is a control character than means 'return to the beginning of the 
line'.  When you execute "print('hello\rpython')" in Python running in 
an operating system console, the effect of '\r' depends on the console. 
If the console tries to emulate terminals which moved the cursor or 
printing head in response to '\r', then that is what happens.  The 
effect of various control codes depends on the terminal emulation and 
can be different on different systems.

> However, if you type print (" hello\ rpython ") in the python 3.7.0.b2 idle, it is output as hellopython.

IDLE is a cross-platform development environment and its shell is not a 
terminal emulator.  Requests to imitate particular terminals/consoles 
have been rejected.  In the case of \r and backspace, it was felt that 
it is better to not erase what has been printed.  If one wants to know 
how a program will operate in a particular console, one should test it 
there.

> I have attached the file.

Don't do this.  Copy and paste relevant snippets of code into the 
message.  Attachments are ignored and not sent to subscribers or mirrors. -
Terry Jan Reedy