[Python-ideas] "on" statement

[Greg Ewing]

Bruce Leban wrote:

>     foo is in bar     = hasattr(foo,bar)
>     foo is not in bar = not hasattr(foo,bar)
>     foo is class bar = isinstance(foo,bar)
>     foo is from bar  = issubclass(foo,bar)
>     foo is with bar  = type(foo) == type(bar)

+1. Also we must absolutely have

   foo is totally bar

for those *$&@*&(*@& moments we all experience while coding.

-- 
Greg