See my very detailed posts on EXACTLY the concepts you discuss.
"whether 'bar' is a name"? It is definitely a name, what you have no means
> to know is whether it has been assigned a value. I suspect you're trying to
> do the thing some people do where they insist on 'name' to avoid using the
> term 'variable'
I have no idea what you are trying to make "is a name" mean. In an
ordinary and Python sense, an unbound "name" isn't a name. I guess you can
say "variable" if that makes you happier somehow. I'm not sure if you are
trying to make some hair-splitting distinction between a UnboundLocalError
and a NameError.
>>> def fun():
... if False: x = 1
... print('x' in locals())
... print('x' in globals())
... try:
... x
... except Exception as err:
... print(err)
>>> fun()
False
False
local variable 'x' referenced before assignment
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