trouble testing for existance of variable

[Carel Fellinger]

googlePoster <scott2237 at yahoo.com> wrote:
...
> try:
>    curr_color = vim.eval("colors_name")
> except NameError:

Ah code, now we know:) It's ofcourse not Python's fault, but incorrect
vim usage:) So I looked it up (don't use vim myself, but instructed my
daughters to:) and vim has this nifty function to check for the
existance of a varibale.

   :echo eval("colors_name")
   :python print eval("colors_name")

returns 0 or 1 depending on the existence of "colors_name", so why not:

   curr_color = ( vim.eval( 'exists("colors_name")' )
                  and vim.eval('colors_name')
                  or None )

-- 
groetjes, carel