Question

if not sky.has_key('blue'):
    get_currently_compared_key # blue
elif not sky.has_key('cloud'):
    get_currently_compared_key # cloud

In above code, I want to get ‘blue’ in if statement. Is there any useful method?

Edited 1: if sky == ‘blue’ -> if not sky == ‘blue’
Edited 2: if not sky.has_key(‘blue’)…

Answer 1

There’s no magic identifier that expands to blue inside the consequent, if that’s what you mean, although sky obviously has the value you’re after.

Edit: I suppose you mean sky != 'blue' instead of not sky == 'blue'. No, there’s no magic way to get to the values under comparison in the condition. Either type 'blue' again or create a variable holding it outside the conditional:

BLUE = 'blue'

if sky != BLUE:
    make_the_sky(BLUE)

Edit 2: okay, so it’s has_key. Still no magic. Note that has_key has been deprecated for quite some time in favor of 'blue' in sky (or 'blue' not in sky).