What's the pythonic way to distinguish between a dict and a list of dicts?

What's the pythonic way to distinguish between a dict and a list of dicts?

So, I'm trying to be a good Python programmer and duck-type wherever I
can, but I've got a bit of a problem where my input is either a dict or a
list of dicts.
I can't distinguish between them being iterable, because they both are.
My next thought was simply to call list(x) and hope that returned my list
intact and gave me my dict as the only item in a list; alas, it just gives
me the list of the dict's keys.
I'm now officially out of ideas (short of calling isinstance which is, as
we all know, not very pythonic). I just want to end up with a list of
dicts, even if my input is a single solitary dict.