[Python] Test for multiple variables in locals().keys() fails [duplicate]

I am testing the existence of local variables LatLim and LongLim at the Spyder console:

>>> LatLim = (36.033333,36.2333)
>>> LongLim = (-5.5333,-5.25)
>>> locals().keys()
dict_keys(['__name__', '__builtin__', ... 'LatLim', 'LongLim', ... ])


Each variable tests fine by itself:

>>> 'LatLim' in locals().keys()
True

>>> 'LongLim' in locals().keys()
True


The OR'ing of the test should be True but is False:

>>> any( key in locals().keys()
for key in ('LatLim','LongLim') )
False


If I create a dictionary of local keys, the test succeeds:

>>> LocalsKeys = locals().keys()
>>> any( key in LocalsKeys for key in ('LatLim','LongLim') )
True


Why does the OR'ing fail when checking locals().keys() directly?

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