A use-case for for...else with no break

[Terry Reedy]

On 11/2/2017 6:10 AM, Steve D'Aprano wrote:
> Occasionally it is useful to loop over a bunch of stuff in the interactive
> interpreter, printing them as you go on a single line:
> 
> for x in something():
>      print(x, end='')
> 
> If you do that, the prompt overwrites your output, and you get a mess:
> 
> 
> py> for x in "abcdefgh":
> ...     print(x, end='')
> ...
> py> efghpy>

This seems like a bug in how Python interacts with your console.  On 
Windows, in Python started from an icon or in Command Prompt:

 >>> for c in 'abc': print(c, end='')
...
abc>>>

IDLE adds \n if needed, so prompts always starts on a fresh line.

 >>> for x in 'abcdefgh':
	print(x, end='')

abcdefgh
 >>>

> "For ... else" to the rescue!
> 
> py> for char in "abcdefgh":
> ...     print(char, end='')
> ... else:
> ...     print()
> ...
> abcdefgh
> py>

-- 
Terry Jan Reedy