[Python-ideas] Re: Possible Addition to Python Language: Marked Sub-condition

On 2020-03-09 14:16, David Mertz wrote:

This isn't a terrible use of the walrus operator either.

if blue_20 := (color==BLUE and count==20) or red_5 := (color==RED
and count%5==0)
     rotate_the_wheel() # Common to the two sub-conditions
     if blue_20: # First sub-condition
         set_signal()
     if red_5: # Second sub-condition
         clear_signal()
     proc_post_rotate() # Common to the two sub-conditions

[snip]

The problem there is that if the first part of the condition is true, the second part won't be evaluated, so red_5 won't be set.