issubclass() not as documented

[Skaperen]

classinfo may be a tuple of class objects, in which case every entry in classinfo will be checked. In any other case, a TypeError exception is raised.

What it's saying is that it raises TypeError when you pass it something other than a tuple.
It might not be perfectly clear from that that a single class is also allowed, but it doesn't say an exception is raised unless the condition is true.

i think there is a better way to explain it as what it says right now doesn't do it.