code style - one line subclause on same line

[Skaperen]

i used to use this style

   if value is True: count += 1

but i have changed to this style

  if value in True:
        count += 1

but now i am reconsidering.  i think that in some cases the one line style can be easier to understand, especially if multiple related clauses are lined up vertically, such as

    if ch in ('t','T'): return True
    if ch in ('f','F'): return False
    else:               return None

so i would not be going back all the way but just part way, just doing it in cases that seem to me to add to readability.  even though this example is simple to understand, IMHO, it is quicker to read this way.

comments?