Make a pythonic one line statement like "return True if flag"?

Question

Is there a way to write a one line python statement for

if flag:
   return True

Note that this can be semantically different from

return flag

In my case, None is expected to be returned otherwise.

I have tried with "return True if flag", which has syntactic error detected by my emacs.

Answer 1

return True if flag doesn't work because you need to supply an explicit else. You could use:

return True if flag else None

to replicate the behaviour of your original if statement.

Answer 2

You could use:

return bool(flag) or None