Issue#145 textui.prompt.yn

[tz70s]

issue #145
Hello , I'm not sure about what author exactly wanted this function do
However , I try to fixed the boolean return value in textui.prompt.yn()function
I agree issue #145 concerned about the output is more close to users' thoughts
Testing code as issue #145

from clint.textui import prompt

for d in range(3):
    print(prompt.yn("Yes?"))

for y in range(3):
    print(prompt.yn("Yes? default=y", default="y"))

for n in range(3):
    print(prompt.yn("Yes? default=n", default="n"))

• Before , output changed when no as default section

Yes? default=n [y/N] y
False
Yes? default=n [y/N] n
True
Yes? default=n [y/N]
False

• After

Yes? default=n [y/N] y
True
Yes? default=n [y/N] n
False
Yes? default=n [y/N] 
False

• The yn function's return value is now defined as

yes  ->  return True

no   ->  return False

NULL string -> return True if default is 'y' else False

[wkentaro]

lgtm. 👍

[wkentaro]

two commits can be squashed?

[tz70s]

Sure, I'll do it later

[wkentaro]

maybe you need another rebase.

[tz70s]

Sorry, I got messed on rebase. I can get an another pr if needed.